From e9a02cb3a565daab16e295c551dff80501f94974 Mon Sep 17 00:00:00 2001
From: Masoud Hemmatpour <mhemmatp@cisco.com>
Date: Thu, 4 Apr 2019 13:34:04 +0200
Subject: [HICN-153] vapi definition warning

Change-Id: I50f381540e171fe2808d4e56cc24ba6d66e8a2ab
Signed-off-by: Masoud Hemmatpour <mhemmatp@cisco.com>
---
 utils/sysrepo-plugins/yang/hicn/hicn.yang          |  571 +++++++
 .../sysrepo-plugins/yang/hicn/rpc_call_samples.xml |   78 +
 .../sysrepo-plugins/yang/hicn/sysrepo_startup.xml  |   11 +
 .../yang/ietf/iana-if-type@2014-05-08.yang         | 1704 ++++++++++++++++++++
 .../sysrepo-plugins/yang/ietf/ietf-interfaces.yang | 1123 +++++++++++++
 .../yang/ietf/ietf-ip@2014-06-16.yang              |  742 +++++++++
 .../yang/ietf/ietf-yang-types@2013-07-15.yang      |  474 ++++++
 7 files changed, 4703 insertions(+)
 create mode 100644 utils/sysrepo-plugins/yang/hicn/hicn.yang
 create mode 100644 utils/sysrepo-plugins/yang/hicn/rpc_call_samples.xml
 create mode 100644 utils/sysrepo-plugins/yang/hicn/sysrepo_startup.xml
 create mode 100644 utils/sysrepo-plugins/yang/ietf/iana-if-type@2014-05-08.yang
 create mode 100644 utils/sysrepo-plugins/yang/ietf/ietf-interfaces.yang
 create mode 100644 utils/sysrepo-plugins/yang/ietf/ietf-ip@2014-06-16.yang
 create mode 100644 utils/sysrepo-plugins/yang/ietf/ietf-yang-types@2013-07-15.yang

(limited to 'utils/sysrepo-plugins/yang')

diff --git a/utils/sysrepo-plugins/yang/hicn/hicn.yang b/utils/sysrepo-plugins/yang/hicn/hicn.yang
new file mode 100644
index 000000000..e5bdca420
--- /dev/null
+++ b/utils/sysrepo-plugins/yang/hicn/hicn.yang
@@ -0,0 +1,571 @@
+module hicn {
+namespace "urn:sysrepo:hicn";
+prefix hcn;
+
+revision 2019-04-25 {
+    description "Initial revision.";
+}
+
+/* new data types and grouping definition to forward the remote request toward hicn controler--to-->hicn */
+
+typedef float {
+    type decimal64 {
+        fraction-digits 2;
+    }
+}
+
+
+grouping params {
+
+leaf enable_disable {
+        description "Enable / disable ICN forwarder in VPP.";
+        type boolean;
+        default false;
+    }
+
+leaf pit_max_size {
+        description "PIT maximum size, otherwise -1 to assign default value.";
+        type int32;
+        default -1;
+    }
+
+leaf cs_max_size {
+        description "CS maximum size, otherwise -1 to assign default value.";
+        type int32;
+        default -1;
+    }
+
+leaf cs_reserved_app {
+        description "Portion of CS reserved to application, otherwise -1 to assign default value.";
+        type int32;
+        default -1;
+    }
+
+leaf pit_dflt_lifetime_sec {
+        description "Default PIT entry lifetime, otherwise -1 to assign default value.";
+        type float;
+        default -1;
+    }
+
+leaf pit_max_lifetime_sec {
+        description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value.";
+        type float;
+        default -1;
+    }
+
+leaf pit_min_lifetime_sec {
+        description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+        type float;
+        default -1;
+    }
+}
+
+grouping face_ip_add {
+
+leaf lip4 {
+        description "IP version 4 local address.";
+        type string;
+    }
+
+leaf lip6 {
+        description "IP version 6 local address.";
+        type string;
+    }
+
+leaf rip4 {
+        description "IP version 4 local address.";
+        type string;
+    }
+
+leaf rip6 {
+        description "IP version 6 local address.";
+        type string;
+    }
+
+leaf swif {
+        description "Interface Index.";
+        type uint32;
+    }
+}
+
+grouping route_nhops_add {
+
+leaf ip4 {
+        description "ip4 to be added to the FIB.";
+        type string;
+    }
+
+leaf ip6 {
+        description "ip6 to be added to the FIB.";
+        type string;
+    }
+
+leaf len {
+        description "Length of the prefix.";
+        type uint8;
+    }
+
+leaf face_ids0 {
+        description "A Face ID to the next hop forwarder for the specified prefix.";
+        type uint32;
+    }
+
+leaf face_ids1 {
+        description "A Face ID to the next hop forwarder for the specified prefix.";
+        type uint32;
+    }
+
+leaf face_ids2 {
+        description "A Face ID to the next hop forwarder for the specified prefix.";
+        type uint32;
+    }
+
+leaf face_ids3 {
+        description "A Face ID to the next hop forwarder for the specified prefix.";
+        type uint32;
+    }
+
+leaf face_ids4 {
+        description "A Face ID to the next hop forwarder for the specified prefix.";
+        type uint32;
+    }
+
+leaf face_ids5 {
+        description "A Face ID to the next hop forwarder for the specified prefix.";
+        type uint32;
+    }
+
+leaf face_ids6 {
+        description "A Face ID to the next hop forwarder for the specified prefix.";
+        type uint32;
+    }
+
+leaf n_faces {
+        description "Number of face to add.";
+        type uint8;
+    }
+}
+
+
+grouping route_nhops_del {
+
+leaf ip4 {
+        description "ip4 to be added to the FIB.";
+        type string;
+    }
+
+leaf ip6 {
+        description "ip6 to be added to the FIB.";
+        type string;
+    }
+
+leaf len {
+        description "Length of the prefix.";
+        type uint8;
+    }
+
+leaf faceid {
+        description "A Face ID to the next hop forwarder for the specified prefix.";
+        type uint32;
+    }
+
+}
+
+grouping route_del {
+
+leaf ip4 {
+        description "ip4 to be added to the FIB.";
+        type string;
+    }
+
+leaf ip6 {
+        description "ip6 to be added to the FIB.";
+        type string;
+    }
+
+leaf len {
+        description "Length of the prefix.";
+        type uint8;
+    }
+}
+
+
+grouping route_get {
+
+
+leaf ip4 {
+        description "ip4 to be added to the FIB.";
+        type string;
+    }
+
+leaf ip6 {
+        description "ip6 to be added to the FIB.";
+        type string;
+    }
+
+leaf len {
+        description "Length of the prefix.";
+        type uint8;
+    }
+}
+
+grouping punting_add {
+
+leaf ip4 {
+        description "ip4 to be added to the FIB.";
+        type string;
+    }
+
+leaf ip6 {
+        description "ip6 to be added to the FIB.";
+        type string;
+    }
+
+leaf len {
+        description "Length of the prefix.";
+        type uint8;
+    }
+
+leaf swif {
+        description "Interface id.";
+        type uint32;
+    }
+}
+
+grouping register_prod_app {
+
+leaf-list prefix {
+        description "prefix to be matched to the FIB.";
+        type uint64;
+    }
+
+leaf len {
+        description "Length of the prefix.";
+        type uint8;
+    }
+
+leaf swif {
+        description "Interface id.";
+        type uint32;
+    }
+
+leaf cs_reserved {
+        description "CS memory reserved -- in number of packets.";
+        type uint32;
+    }
+
+}
+
+/* new data types and grouping definition to backward the remote response  hicn--to-->controler */
+
+
+grouping states-reply {
+
+    leaf pkts_processed {
+            description "ICN packets processed.";
+            type uint64;
+        }
+
+    leaf pkts_interest_count {
+            description "PIT maximum size, otherwise -1 to assign default value.";
+            type uint64;
+        }
+
+    leaf pkts_data_count {
+            description "CS maximum size, otherwise -1 to assign default value.";
+            type uint64;
+        }
+
+    leaf pkts_from_cache_count {
+            description "Portion of CS reserved to application, otherwise -1 to assign default value.";
+            type uint64;
+        }
+
+    leaf pkts_no_pit_count {
+            description "Default PIT entry lifetime, otherwise -1 to assign default value.";
+            type uint64;
+        }
+
+    leaf pit_expired_count {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value.";
+            type uint64;
+        }
+
+    leaf cs_expired_count {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+    leaf cs_lru_count {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+    leaf pkts_drop_no_buf {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+    leaf interests_aggregated {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+    leaf interests_retx {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+    leaf interests_hash_collision {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+    leaf pit_entries_count {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+    leaf cs_entries_count {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+    leaf cs_entries_ntw_count {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint64;
+        }
+
+}
+
+grouping face-stats-reply {
+    list face{
+        key faceid;
+        leaf faceid {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint32;
+            }
+
+        leaf intfc {
+                description "This is the idx number of the faceid.";
+                type uint32;
+            }
+
+        leaf irx_packets {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint64;
+            }
+
+        leaf irx_bytes {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint64;
+            }
+
+        leaf itx_packets {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint64;
+            }
+
+        leaf itx_bytes {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint64;
+            }
+
+
+        leaf drx_packets {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint64;
+            }
+
+        leaf drx_bytes {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint64;
+            }
+
+        leaf dtx_packets {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint64;
+            }
+
+
+        leaf dtx_bytes {
+                description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+                type uint64;
+            }
+    }
+}
+
+grouping strategy-reply {
+
+    leaf description {
+            description "Enable / disable ICN forwarder in VPP.";
+            type uint8;
+        }
+}
+
+grouping route-reply {
+
+    leaf faceids {
+            description "Enable / disable ICN forwarder in VPP.";
+            type uint32;
+
+        }
+
+    leaf strategy_id {
+            description "compile-time plugin features.";
+            type uint32;
+        }
+}
+
+grouping strategies-reply {
+    leaf n_strategies {
+            description "Enable / disable ICN forwarder in VPP.";
+            type uint8;
+        }
+    leaf strategy_id {
+            description "Enable / disable ICN forwarder in VPP.";
+            type uint32;
+        }
+
+}
+
+/* Hicn configuration */
+
+container hicn-conf {
+    description "config data container for the hicn-vpp.";
+    container params{
+        uses params;
+    }
+}
+
+
+/* Hicn operational data */
+
+container hicn-state {
+    config false;
+    description "operational data container for the hicn.";
+
+    container states{
+        uses states-reply;
+    }
+    container routes{
+        uses route-reply;
+    }
+    container strategies{
+        uses strategies-reply;
+    }
+    container faces{
+        uses face-stats-reply;
+    }
+
+}
+
+/* RPC Definitions */
+
+
+rpc node-params-set {
+    description "Operation to set hicn params in vpp.";
+    input {
+        uses params;
+    }
+}
+
+rpc node-params-get {
+    description "Operation to get hicn parameter in vpp.";
+}
+
+
+rpc node-stat-get {
+    description "Operation to get hicn status in vpp.";
+}
+
+
+rpc strategy-get {
+        description "Operation to get hicn strategy.";
+    input {
+        leaf strategy_id {
+            description "Upper bound on PIT entry lifetime, otherwise -1 to assign default value .";
+            type uint32;
+        }
+    }
+}
+
+rpc  strategies-get {
+        description "Operation to get hicn strategies.";
+}
+
+rpc route-get {
+        description "Operation to get hicn route.";
+    input {
+        uses route_get;
+    }
+}
+
+rpc  route-del {
+        description "Operation to del hicn route.";
+    input {
+        uses route_del;
+    }
+}
+
+rpc route-nhops-add {
+        description "Operation to add hicn route nhops.";
+    input {
+        uses route_nhops_add;
+    }
+}
+
+rpc  route-nhops-del {
+        description "Operation to add hicn face ip punt.";
+    input {
+        uses route_nhops_del;
+    }
+}
+
+rpc  face-ip-params-get {
+        description "Operation to del hicn route.";
+    input {
+        leaf faceid {
+            description "Face to be retrieved .";
+            type uint32;
+        }
+    }
+}
+
+rpc  face-ip-add {
+        description "Operation to add hicn face ip.";
+    input {
+        uses face_ip_add;
+    }
+}
+
+rpc  face-ip-del {
+        description "Operation to del hicn face ip.";
+    input {
+        leaf faceid {
+            description "Face to be deleted .";
+            type uint32;
+        }
+    }
+}
+
+rpc  punting-add {
+        description "Operation to add hicn punt.";
+    input {
+        uses punting_add;
+    }
+}
+
+rpc  punting-del {
+        description "Operation to del hicn punt.";
+    input {
+        uses punting_add; /* It uses the same payload as the add*/
+    }
+}
+
+rpc  face-stats-details {
+        description "Operation to take stat per face.";
+}
+
+
+}
\ No newline at end of file
diff --git a/utils/sysrepo-plugins/yang/hicn/rpc_call_samples.xml b/utils/sysrepo-plugins/yang/hicn/rpc_call_samples.xml
new file mode 100644
index 000000000..db79fd4ef
--- /dev/null
+++ b/utils/sysrepo-plugins/yang/hicn/rpc_call_samples.xml
@@ -0,0 +1,78 @@
+<node-params-get xmlns="urn:sysrepo:hicn"/>
+
+<node-stat-get xmlns="urn:sysrepo:hicn"/>
+
+<strategy-get xmlns="urn:sysrepo:hicn">
+    <strategy_id>0</strategy_id>
+</strategy-get>
+
+<strategies-get xmlns="urn:sysrepo:hicn"/>
+
+
+<route-get xmlns="urn:sysrepo:hicn">
+    <ip4>192.168.1.1</ip4>
+    <ip6>-1</ip6>
+    <len>24</len>
+</route-get>
+
+<route-del xmlns="urn:sysrepo:hicn">
+    <ip4>192.168.1.1</ip4>
+    <ip6>-1</ip6>
+    <len>30</len>
+</route-del>
+
+<route-nhops-add xmlns="urn:sysrepo:hicn">
+    <ip4>192.168.1.1</ip4>
+    <ip6>-1</ip6>
+    <len>24</len>
+    <face_ids0>0</face_ids0>
+    <face_ids1>0</face_ids1>
+    <face_ids2>0</face_ids2>
+    <face_ids3>0</face_ids3>
+    <face_ids4>0</face_ids4>
+    <face_ids5>0</face_ids5>
+    <face_ids6>0</face_ids6>
+    <n_faces>1</n_faces>
+</route-nhops-add>
+
+<route-nhops-del xmlns="urn:sysrepo:hicn">
+    <ip4>192.168.1.1</ip4>
+    <ip6>-1</ip6>
+    <len>24</len>
+    <faceid>0</faceid>
+</route-nhops-del>
+
+
+<face-ip-params-get xmlns="urn:sysrepo:hicn">
+    <faceid>10</faceid>
+</face-ip-params-get>
+
+<face-ip-add xmlns="urn:sysrepo:hicn">
+    <lip4>192.168.1.10</lip4>
+    <lip6>-1</lip6>
+    <rip4>192.168.1.1</rip4>
+    <rip6>-1</rip6>
+    <swif>0</swif>
+</face-ip-add>
+
+
+<face-ip-del xmlns="urn:sysrepo:hicn">
+    <faceid>0</faceid>
+</face-ip-del>
+
+<punting-add xmlns="urn:sysrepo:hicn">
+    <ip4>192.168.0.1</ip4>
+    <ip6>-1</ip6>
+    <len>24</len>
+    <swif>0</swif>
+</punting-add>
+
+
+<punting-del xmlns="urn:sysrepo:hicn">
+    <ip4>192.168.0.1</ip4>
+    <ip6>-1</ip6>
+    <len>24</len>
+    <swif>0</swif>
+</punting-del>
+
+<face-stats-details xmlns="urn:sysrepo:hicn"/>
diff --git a/utils/sysrepo-plugins/yang/hicn/sysrepo_startup.xml b/utils/sysrepo-plugins/yang/hicn/sysrepo_startup.xml
new file mode 100644
index 000000000..f88e13ea2
--- /dev/null
+++ b/utils/sysrepo-plugins/yang/hicn/sysrepo_startup.xml
@@ -0,0 +1,11 @@
+<hicn-conf  xmlns="urn:sysrepo:hicn">
+<params>
+    <enable_disable>false</enable_disable>
+    <pit_max_size>-1</pit_max_size>
+    <cs_max_size>-1</cs_max_size>
+    <cs_reserved_app>-1</cs_reserved_app>
+    <pit_dflt_lifetime_sec>-1</pit_dflt_lifetime_sec>
+    <pit_max_lifetime_sec>-1</pit_max_lifetime_sec>
+    <pit_min_lifetime_sec>-1</pit_min_lifetime_sec>
+</params>
+</hicn-conf>
\ No newline at end of file
diff --git a/utils/sysrepo-plugins/yang/ietf/iana-if-type@2014-05-08.yang b/utils/sysrepo-plugins/yang/ietf/iana-if-type@2014-05-08.yang
new file mode 100644
index 000000000..4138ba46e
--- /dev/null
+++ b/utils/sysrepo-plugins/yang/ietf/iana-if-type@2014-05-08.yang
@@ -0,0 +1,1704 @@
+module iana-if-type {
+
+    yang-version 1;
+
+    namespace
+      "urn:ietf:params:xml:ns:yang:iana-if-type";
+
+    prefix ianaift;
+
+    import ietf-interfaces {
+      prefix if;
+    }
+
+    organization "IANA";
+
+    contact
+      "        Internet Assigned Numbers Authority
+
+     Postal: ICANN
+             4676 Admiralty Way, Suite 330
+             Marina del Rey, CA 90292
+
+     Tel:    +1 310 823 9358
+     <mailto:iana@iana.org>";
+
+    description
+      "This YANG module defines YANG identities for IANA-registered
+     interface types.
+
+     This YANG module is maintained by IANA and reflects the
+     'ifType definitions' registry.
+
+     The latest revision of this YANG module can be obtained from
+     the IANA web site.
+
+     Requests for new values should be made to IANA via
+     email (iana@iana.org).
+
+     Copyright (c) 2014 IETF Trust and the persons identified as
+     authors of the code.  All rights reserved.
+
+     Redistribution and use in source and binary forms, with or
+     without modification, is permitted pursuant to, and subject
+     to the license terms contained in, the Simplified BSD License
+     set forth in Section 4.c of the IETF Trust's Legal Provisions
+     Relating to IETF Documents
+     (http://trustee.ietf.org/license-info).
+
+     The initial version of this YANG module is part of RFC 7224;
+     see the RFC itself for full legal notices.";
+
+    reference
+      "IANA 'ifType definitions' registry.
+      <http://www.iana.org/assignments/smi-numbers>";
+
+
+    revision "2014-05-08" {
+      description "Initial revision.";
+      reference
+        "RFC 7224: IANA Interface Type YANG Module";
+
+    }
+
+
+    identity iana-interface-type {
+      base if:interface-type;
+      description
+        "This identity is used as a base for all interface types
+       defined in the 'ifType definitions' registry.";
+    }
+
+    identity other {
+      base iana-interface-type;
+    }
+
+    identity regular1822 {
+      base iana-interface-type;
+    }
+
+    identity hdh1822 {
+      base iana-interface-type;
+    }
+
+    identity ddnX25 {
+      base iana-interface-type;
+    }
+
+    identity rfc877x25 {
+      base iana-interface-type;
+      reference
+        "RFC 1382 - SNMP MIB Extension for the X.25 Packet Layer";
+
+    }
+
+    identity ethernetCsmacd {
+      base iana-interface-type;
+      description
+        "For all Ethernet-like interfaces, regardless of speed,
+       as per RFC 3635.";
+      reference
+        "RFC 3635 - Definitions of Managed Objects for the
+               Ethernet-like Interface Types";
+
+    }
+
+    identity iso88023Csmacd {
+      base iana-interface-type;
+      status deprecated;
+      description
+        "Deprecated via RFC 3635.
+       Use ethernetCsmacd(6) instead.";
+      reference
+        "RFC 3635 - Definitions of Managed Objects for the
+               Ethernet-like Interface Types";
+
+    }
+
+    identity iso88024TokenBus {
+      base iana-interface-type;
+    }
+
+    identity iso88025TokenRing {
+      base iana-interface-type;
+    }
+
+    identity iso88026Man {
+      base iana-interface-type;
+    }
+
+    identity starLan {
+      base iana-interface-type;
+      status deprecated;
+      description
+        "Deprecated via RFC 3635.
+       Use ethernetCsmacd(6) instead.";
+      reference
+        "RFC 3635 - Definitions of Managed Objects for the
+               Ethernet-like Interface Types";
+
+    }
+
+    identity proteon10Mbit {
+      base iana-interface-type;
+    }
+
+    identity proteon80Mbit {
+      base iana-interface-type;
+    }
+
+    identity hyperchannel {
+      base iana-interface-type;
+    }
+
+    identity fddi {
+      base iana-interface-type;
+      reference
+        "RFC 1512 - FDDI Management Information Base";
+
+    }
+
+    identity lapb {
+      base iana-interface-type;
+      reference
+        "RFC 1381 - SNMP MIB Extension for X.25 LAPB";
+
+    }
+
+    identity sdlc {
+      base iana-interface-type;
+    }
+
+    identity ds1 {
+      base iana-interface-type;
+      description "DS1-MIB.";
+      reference
+        "RFC 4805 - Definitions of Managed Objects for the
+               DS1, J1, E1, DS2, and E2 Interface Types";
+
+    }
+
+    identity e1 {
+      base iana-interface-type;
+      status obsolete;
+      description "Obsolete; see DS1-MIB.";
+      reference
+        "RFC 4805 - Definitions of Managed Objects for the
+               DS1, J1, E1, DS2, and E2 Interface Types";
+
+    }
+
+    identity basicISDN {
+      base iana-interface-type;
+      description
+        "No longer used.  See also RFC 2127.";
+    }
+
+    identity primaryISDN {
+      base iana-interface-type;
+      description
+        "No longer used.  See also RFC 2127.";
+    }
+
+    identity propPointToPointSerial {
+      base iana-interface-type;
+      description "Proprietary serial.";
+    }
+
+    identity ppp {
+      base iana-interface-type;
+    }
+
+    identity softwareLoopback {
+      base iana-interface-type;
+    }
+
+    identity eon {
+      base iana-interface-type;
+      description "CLNP over IP.";
+    }
+
+    identity ethernet3Mbit {
+      base iana-interface-type;
+    }
+
+    identity nsip {
+      base iana-interface-type;
+      description "XNS over IP.";
+    }
+
+    identity slip {
+      base iana-interface-type;
+      description "Generic SLIP.";
+    }
+
+    identity ultra {
+      base iana-interface-type;
+      description "Ultra Technologies.";
+    }
+
+    identity ds3 {
+      base iana-interface-type;
+      description "DS3-MIB.";
+      reference
+        "RFC 3896 - Definitions of Managed Objects for the
+               DS3/E3 Interface Type";
+
+    }
+
+    identity sip {
+      base iana-interface-type;
+      description "SMDS, coffee.";
+      reference
+        "RFC 1694 - Definitions of Managed Objects for SMDS
+               Interfaces using SMIv2";
+
+    }
+
+    identity frameRelay {
+      base iana-interface-type;
+      description "DTE only.";
+      reference
+        "RFC 2115 - Management Information Base for Frame Relay
+               DTEs Using SMIv2";
+
+    }
+
+    identity rs232 {
+      base iana-interface-type;
+      reference
+        "RFC 1659 - Definitions of Managed Objects for RS-232-like
+               Hardware Devices using SMIv2";
+
+    }
+
+    identity para {
+      base iana-interface-type;
+      description "Parallel-port.";
+      reference
+        "RFC 1660 - Definitions of Managed Objects for
+               Parallel-printer-like Hardware Devices using
+               SMIv2";
+
+    }
+
+    identity arcnet {
+      base iana-interface-type;
+      description "ARCnet.";
+    }
+
+    identity arcnetPlus {
+      base iana-interface-type;
+      description "ARCnet Plus.";
+    }
+
+    identity atm {
+      base iana-interface-type;
+      description "ATM cells.";
+    }
+
+    identity miox25 {
+      base iana-interface-type;
+      reference
+        "RFC 1461 - SNMP MIB extension for Multiprotocol
+               Interconnect over X.25";
+
+    }
+
+    identity sonet {
+      base iana-interface-type;
+      description "SONET or SDH.";
+    }
+
+    identity x25ple {
+      base iana-interface-type;
+      reference
+        "RFC 2127 - ISDN Management Information Base using SMIv2";
+
+    }
+
+    identity iso88022llc {
+      base iana-interface-type;
+    }
+
+    identity localTalk {
+      base iana-interface-type;
+    }
+
+    identity smdsDxi {
+      base iana-interface-type;
+    }
+
+    identity frameRelayService {
+      base iana-interface-type;
+      description "FRNETSERV-MIB.";
+      reference
+        "RFC 2954 - Definitions of Managed Objects for Frame
+               Relay Service";
+
+    }
+
+    identity v35 {
+      base iana-interface-type;
+    }
+
+    identity hssi {
+      base iana-interface-type;
+    }
+
+    identity hippi {
+      base iana-interface-type;
+    }
+
+    identity modem {
+      base iana-interface-type;
+      description "Generic modem.";
+    }
+
+    identity aal5 {
+      base iana-interface-type;
+      description "AAL5 over ATM.";
+    }
+
+    identity sonetPath {
+      base iana-interface-type;
+    }
+
+    identity sonetVT {
+      base iana-interface-type;
+    }
+
+    identity smdsIcip {
+      base iana-interface-type;
+      description
+        "SMDS InterCarrier Interface.";
+    }
+
+    identity propVirtual {
+      base iana-interface-type;
+      description
+        "Proprietary virtual/internal.";
+      reference
+        "RFC 2863 - The Interfaces Group MIB";
+
+    }
+
+    identity propMultiplexor {
+      base iana-interface-type;
+      description
+        "Proprietary multiplexing.";
+      reference
+        "RFC 2863 - The Interfaces Group MIB";
+
+    }
+
+    identity ieee80212 {
+      base iana-interface-type;
+      description "100BaseVG.";
+    }
+
+    identity fibreChannel {
+      base iana-interface-type;
+      description "Fibre Channel.";
+    }
+
+    identity hippiInterface {
+      base iana-interface-type;
+      description "HIPPI interfaces.";
+    }
+
+    identity frameRelayInterconnect {
+      base iana-interface-type;
+      status obsolete;
+      description
+        "Obsolete; use either
+       frameRelay(32) or frameRelayService(44).";
+    }
+
+    identity aflane8023 {
+      base iana-interface-type;
+      description
+        "ATM Emulated LAN for 802.3.";
+    }
+
+    identity aflane8025 {
+      base iana-interface-type;
+      description
+        "ATM Emulated LAN for 802.5.";
+    }
+
+    identity cctEmul {
+      base iana-interface-type;
+      description "ATM Emulated circuit.";
+    }
+
+    identity fastEther {
+      base iana-interface-type;
+      status deprecated;
+      description
+        "Obsoleted via RFC 3635.
+       ethernetCsmacd(6) should be used instead.";
+      reference
+        "RFC 3635 - Definitions of Managed Objects for the
+               Ethernet-like Interface Types";
+
+    }
+
+    identity isdn {
+      base iana-interface-type;
+      description "ISDN and X.25.";
+      reference
+        "RFC 1356 - Multiprotocol Interconnect on X.25 and ISDN
+               in the Packet Mode";
+
+    }
+
+    identity v11 {
+      base iana-interface-type;
+      description "CCITT V.11/X.21.";
+    }
+
+    identity v36 {
+      base iana-interface-type;
+      description "CCITT V.36.";
+    }
+
+    identity g703at64k {
+      base iana-interface-type;
+      description "CCITT G703 at 64Kbps.";
+    }
+
+    identity g703at2mb {
+      base iana-interface-type;
+      status obsolete;
+      description "Obsolete; see DS1-MIB.";
+    }
+
+    identity qllc {
+      base iana-interface-type;
+      description "SNA QLLC.";
+    }
+
+    identity fastEtherFX {
+      base iana-interface-type;
+      status deprecated;
+      description
+        "Obsoleted via RFC 3635.
+       ethernetCsmacd(6) should be used instead.";
+      reference
+        "RFC 3635 - Definitions of Managed Objects for the
+               Ethernet-like Interface Types";
+
+    }
+
+    identity channel {
+      base iana-interface-type;
+      description "Channel.";
+    }
+
+    identity ieee80211 {
+      base iana-interface-type;
+      description "Radio spread spectrum.";
+    }
+
+    identity ibm370parChan {
+      base iana-interface-type;
+      description
+        "IBM System 360/370 OEMI Channel.";
+    }
+
+    identity escon {
+      base iana-interface-type;
+      description
+        "IBM Enterprise Systems Connection.";
+    }
+
+    identity dlsw {
+      base iana-interface-type;
+      description "Data Link Switching.";
+    }
+
+    identity isdns {
+      base iana-interface-type;
+      description "ISDN S/T interface.";
+    }
+
+    identity isdnu {
+      base iana-interface-type;
+      description "ISDN U interface.";
+    }
+
+    identity lapd {
+      base iana-interface-type;
+      description "Link Access Protocol D.";
+    }
+
+    identity ipSwitch {
+      base iana-interface-type;
+      description "IP Switching Objects.";
+    }
+
+    identity rsrb {
+      base iana-interface-type;
+      description
+        "Remote Source Route Bridging.";
+    }
+
+    identity atmLogical {
+      base iana-interface-type;
+      description "ATM Logical Port.";
+      reference
+        "RFC 3606 - Definitions of Supplemental Managed Objects
+               for ATM Interface";
+
+    }
+
+    identity ds0 {
+      base iana-interface-type;
+      description "Digital Signal Level 0.";
+      reference
+        "RFC 2494 - Definitions of Managed Objects for the DS0
+               and DS0 Bundle Interface Type";
+
+    }
+
+    identity ds0Bundle {
+      base iana-interface-type;
+      description
+        "Group of ds0s on the same ds1.";
+      reference
+        "RFC 2494 - Definitions of Managed Objects for the DS0
+               and DS0 Bundle Interface Type";
+
+    }
+
+    identity bsc {
+      base iana-interface-type;
+      description "Bisynchronous Protocol.";
+    }
+
+    identity async {
+      base iana-interface-type;
+      description "Asynchronous Protocol.";
+    }
+
+    identity cnr {
+      base iana-interface-type;
+      description "Combat Net Radio.";
+    }
+
+    identity iso88025Dtr {
+      base iana-interface-type;
+      description "ISO 802.5r DTR.";
+    }
+
+    identity eplrs {
+      base iana-interface-type;
+      description "Ext Pos Loc Report Sys.";
+    }
+
+    identity arap {
+      base iana-interface-type;
+      description
+        "Appletalk Remote Access Protocol.";
+    }
+
+    identity propCnls {
+      base iana-interface-type;
+      description
+        "Proprietary Connectionless Protocol.";
+    }
+
+    identity hostPad {
+      base iana-interface-type;
+      description
+        "CCITT-ITU X.29 PAD Protocol.";
+    }
+
+    identity termPad {
+      base iana-interface-type;
+      description
+        "CCITT-ITU X.3 PAD Facility.";
+    }
+
+    identity frameRelayMPI {
+      base iana-interface-type;
+      description
+        "Multiproto Interconnect over FR.";
+    }
+
+    identity x213 {
+      base iana-interface-type;
+      description "CCITT-ITU X213.";
+    }
+
+    identity adsl {
+      base iana-interface-type;
+      description
+        "Asymmetric Digital Subscriber Loop.";
+    }
+
+    identity radsl {
+      base iana-interface-type;
+      description
+        "Rate-Adapt. Digital Subscriber Loop.";
+    }
+
+    identity sdsl {
+      base iana-interface-type;
+      description
+        "Symmetric Digital Subscriber Loop.";
+    }
+
+    identity vdsl {
+      base iana-interface-type;
+      description
+        "Very H-Speed Digital Subscrib. Loop.";
+    }
+
+    identity iso88025CRFPInt {
+      base iana-interface-type;
+      description "ISO 802.5 CRFP.";
+    }
+
+    identity myrinet {
+      base iana-interface-type;
+      description "Myricom Myrinet.";
+    }
+
+    identity voiceEM {
+      base iana-interface-type;
+      description
+        "Voice recEive and transMit.";
+    }
+
+    identity voiceFXO {
+      base iana-interface-type;
+      description
+        "Voice Foreign Exchange Office.";
+    }
+
+    identity voiceFXS {
+      base iana-interface-type;
+      description
+        "Voice Foreign Exchange Station.";
+    }
+
+    identity voiceEncap {
+      base iana-interface-type;
+      description "Voice encapsulation.";
+    }
+
+    identity voiceOverIp {
+      base iana-interface-type;
+      description
+        "Voice over IP encapsulation.";
+    }
+
+    identity atmDxi {
+      base iana-interface-type;
+      description "ATM DXI.";
+    }
+
+    identity atmFuni {
+      base iana-interface-type;
+      description "ATM FUNI.";
+    }
+
+    identity atmIma {
+      base iana-interface-type;
+      description "ATM IMA.";
+    }
+
+    identity pppMultilinkBundle {
+      base iana-interface-type;
+      description "PPP Multilink Bundle.";
+    }
+
+    identity ipOverCdlc {
+      base iana-interface-type;
+      description "IBM ipOverCdlc.";
+    }
+
+    identity ipOverClaw {
+      base iana-interface-type;
+      description
+        "IBM Common Link Access to Workstn.";
+    }
+
+    identity stackToStack {
+      base iana-interface-type;
+      description "IBM stackToStack.";
+    }
+
+    identity virtualIpAddress {
+      base iana-interface-type;
+      description "IBM VIPA.";
+    }
+
+    identity mpc {
+      base iana-interface-type;
+      description
+        "IBM multi-protocol channel support.";
+    }
+
+    identity ipOverAtm {
+      base iana-interface-type;
+      description "IBM ipOverAtm.";
+      reference
+        "RFC 2320 - Definitions of Managed Objects for Classical IP
+               and ARP Over ATM Using SMIv2 (IPOA-MIB)";
+
+    }
+
+    identity iso88025Fiber {
+      base iana-interface-type;
+      description
+        "ISO 802.5j Fiber Token Ring.";
+    }
+
+    identity tdlc {
+      base iana-interface-type;
+      description
+        "IBM twinaxial data link control.";
+    }
+
+    identity gigabitEthernet {
+      base iana-interface-type;
+      status deprecated;
+      description
+        "Obsoleted via RFC 3635.
+       ethernetCsmacd(6) should be used instead.";
+      reference
+        "RFC 3635 - Definitions of Managed Objects for the
+               Ethernet-like Interface Types";
+
+    }
+
+    identity hdlc {
+      base iana-interface-type;
+      description "HDLC.";
+    }
+
+    identity lapf {
+      base iana-interface-type;
+      description "LAP F.";
+    }
+
+    identity v37 {
+      base iana-interface-type;
+      description "V.37.";
+    }
+
+    identity x25mlp {
+      base iana-interface-type;
+      description "Multi-Link Protocol.";
+    }
+
+    identity x25huntGroup {
+      base iana-interface-type;
+      description "X25 Hunt Group.";
+    }
+
+    identity transpHdlc {
+      base iana-interface-type;
+      description "Transp HDLC.";
+    }
+
+    identity interleave {
+      base iana-interface-type;
+      description "Interleave channel.";
+    }
+
+    identity fast {
+      base iana-interface-type;
+      description "Fast channel.";
+    }
+
+    identity ip {
+      base iana-interface-type;
+      description
+        "IP (for APPN HPR in IP networks).";
+    }
+
+    identity docsCableMaclayer {
+      base iana-interface-type;
+      description "CATV Mac Layer.";
+    }
+
+    identity docsCableDownstream {
+      base iana-interface-type;
+      description
+        "CATV Downstream interface.";
+    }
+
+    identity docsCableUpstream {
+      base iana-interface-type;
+      description "CATV Upstream interface.";
+    }
+
+    identity a12MppSwitch {
+      base iana-interface-type;
+      description
+        "Avalon Parallel Processor.";
+    }
+
+    identity tunnel {
+      base iana-interface-type;
+      description "Encapsulation interface.";
+    }
+
+    identity coffee {
+      base iana-interface-type;
+      description "Coffee pot.";
+      reference
+        "RFC 2325 - Coffee MIB";
+
+    }
+
+    identity ces {
+      base iana-interface-type;
+      description
+        "Circuit Emulation Service.";
+    }
+
+    identity atmSubInterface {
+      base iana-interface-type;
+      description "ATM Sub Interface.";
+    }
+
+    identity l2vlan {
+      base iana-interface-type;
+      description
+        "Layer 2 Virtual LAN using 802.1Q.";
+    }
+
+    identity l3ipvlan {
+      base iana-interface-type;
+      description
+        "Layer 3 Virtual LAN using IP.";
+    }
+
+    identity l3ipxvlan {
+      base iana-interface-type;
+      description
+        "Layer 3 Virtual LAN using IPX.";
+    }
+
+    identity digitalPowerline {
+      base iana-interface-type;
+      description "IP over Power Lines.";
+    }
+
+    identity mediaMailOverIp {
+      base iana-interface-type;
+      description "Multimedia Mail over IP.";
+    }
+
+    identity dtm {
+      base iana-interface-type;
+      description
+        "Dynamic synchronous Transfer Mode.";
+    }
+
+    identity dcn {
+      base iana-interface-type;
+      description
+        "Data Communications Network.";
+    }
+
+    identity ipForward {
+      base iana-interface-type;
+      description "IP Forwarding Interface.";
+    }
+
+    identity msdsl {
+      base iana-interface-type;
+      description
+        "Multi-rate Symmetric DSL.";
+    }
+
+    identity ieee1394 {
+      base iana-interface-type;
+      description
+        "IEEE1394 High Performance Serial Bus.";
+    }
+
+    identity if-gsn {
+      base iana-interface-type;
+      description "HIPPI-6400.";
+    }
+
+    identity dvbRccMacLayer {
+      base iana-interface-type;
+      description "DVB-RCC MAC Layer.";
+    }
+
+    identity dvbRccDownstream {
+      base iana-interface-type;
+      description
+        "DVB-RCC Downstream Channel.";
+    }
+
+    identity dvbRccUpstream {
+      base iana-interface-type;
+      description
+        "DVB-RCC Upstream Channel.";
+    }
+
+    identity atmVirtual {
+      base iana-interface-type;
+      description "ATM Virtual Interface.";
+    }
+
+    identity mplsTunnel {
+      base iana-interface-type;
+      description
+        "MPLS Tunnel Virtual Interface.";
+    }
+
+    identity srp {
+      base iana-interface-type;
+      description "Spatial Reuse Protocol.";
+    }
+
+    identity voiceOverAtm {
+      base iana-interface-type;
+      description "Voice over ATM.";
+    }
+
+    identity voiceOverFrameRelay {
+      base iana-interface-type;
+      description "Voice Over Frame Relay.";
+    }
+
+    identity idsl {
+      base iana-interface-type;
+      description
+        "Digital Subscriber Loop over ISDN.";
+    }
+
+    identity compositeLink {
+      base iana-interface-type;
+      description
+        "Avici Composite Link Interface.";
+    }
+
+    identity ss7SigLink {
+      base iana-interface-type;
+      description "SS7 Signaling Link.";
+    }
+
+    identity propWirelessP2P {
+      base iana-interface-type;
+      description
+        "Prop. P2P wireless interface.";
+    }
+
+    identity frForward {
+      base iana-interface-type;
+      description "Frame Forward Interface.";
+    }
+
+    identity rfc1483 {
+      base iana-interface-type;
+      description
+        "Multiprotocol over ATM AAL5.";
+      reference
+        "RFC 1483 - Multiprotocol Encapsulation over ATM
+               Adaptation Layer 5";
+
+    }
+
+    identity usb {
+      base iana-interface-type;
+      description "USB Interface.";
+    }
+
+    identity ieee8023adLag {
+      base iana-interface-type;
+      description
+        "IEEE 802.3ad Link Aggregate.";
+    }
+
+    identity bgppolicyaccounting {
+      base iana-interface-type;
+      description "BGP Policy Accounting.";
+    }
+
+    identity frf16MfrBundle {
+      base iana-interface-type;
+      description
+        "FRF.16 Multilink Frame Relay.";
+    }
+
+    identity h323Gatekeeper {
+      base iana-interface-type;
+      description "H323 Gatekeeper.";
+    }
+
+    identity h323Proxy {
+      base iana-interface-type;
+      description
+        "H323 Voice and Video Proxy.";
+    }
+
+    identity mpls {
+      base iana-interface-type;
+      description "MPLS.";
+    }
+
+    identity mfSigLink {
+      base iana-interface-type;
+      description
+        "Multi-frequency signaling link.";
+    }
+
+    identity hdsl2 {
+      base iana-interface-type;
+      description
+        "High Bit-Rate DSL - 2nd generation.";
+    }
+
+    identity shdsl {
+      base iana-interface-type;
+      description "Multirate HDSL2.";
+    }
+
+    identity ds1FDL {
+      base iana-interface-type;
+      description
+        "Facility Data Link (4Kbps) on a DS1.";
+    }
+
+    identity pos {
+      base iana-interface-type;
+      description
+        "Packet over SONET/SDH Interface.";
+    }
+
+    identity dvbAsiIn {
+      base iana-interface-type;
+      description "DVB-ASI Input.";
+    }
+
+    identity dvbAsiOut {
+      base iana-interface-type;
+      description "DVB-ASI Output.";
+    }
+
+    identity plc {
+      base iana-interface-type;
+      description
+        "Power Line Communications.";
+    }
+
+    identity nfas {
+      base iana-interface-type;
+      description
+        "Non-Facility Associated Signaling.";
+    }
+
+    identity tr008 {
+      base iana-interface-type;
+      description "TR008.";
+    }
+
+    identity gr303RDT {
+      base iana-interface-type;
+      description "Remote Digital Terminal.";
+    }
+
+    identity gr303IDT {
+      base iana-interface-type;
+      description
+        "Integrated Digital Terminal.";
+    }
+
+    identity isup {
+      base iana-interface-type;
+      description "ISUP.";
+    }
+
+    identity propDocsWirelessMaclayer {
+      base iana-interface-type;
+      description
+        "Cisco proprietary Maclayer.";
+    }
+
+    identity propDocsWirelessDownstream {
+      base iana-interface-type;
+      description
+        "Cisco proprietary Downstream.";
+    }
+
+    identity propDocsWirelessUpstream {
+      base iana-interface-type;
+      description
+        "Cisco proprietary Upstream.";
+    }
+
+    identity hiperlan2 {
+      base iana-interface-type;
+      description
+        "HIPERLAN Type 2 Radio Interface.";
+    }
+
+    identity propBWAp2Mp {
+      base iana-interface-type;
+      description
+        "PropBroadbandWirelessAccesspt2Multipt (use of this value
+       for IEEE 802.16 WMAN interfaces as per IEEE Std 802.16f
+       is deprecated, and ieee80216WMAN(237) should be used
+       instead).";
+    }
+
+    identity sonetOverheadChannel {
+      base iana-interface-type;
+      description "SONET Overhead Channel.";
+    }
+
+    identity digitalWrapperOverheadChannel {
+      base iana-interface-type;
+      description "Digital Wrapper.";
+    }
+
+    identity aal2 {
+      base iana-interface-type;
+      description "ATM adaptation layer 2.";
+    }
+
+    identity radioMAC {
+      base iana-interface-type;
+      description
+        "MAC layer over radio links.";
+    }
+
+    identity atmRadio {
+      base iana-interface-type;
+      description "ATM over radio links.";
+    }
+
+    identity imt {
+      base iana-interface-type;
+      description "Inter-Machine Trunks.";
+    }
+
+    identity mvl {
+      base iana-interface-type;
+      description
+        "Multiple Virtual Lines DSL.";
+    }
+
+    identity reachDSL {
+      base iana-interface-type;
+      description "Long Reach DSL.";
+    }
+
+    identity frDlciEndPt {
+      base iana-interface-type;
+      description
+        "Frame Relay DLCI End Point.";
+    }
+
+    identity atmVciEndPt {
+      base iana-interface-type;
+      description "ATM VCI End Point.";
+    }
+
+    identity opticalChannel {
+      base iana-interface-type;
+      description "Optical Channel.";
+    }
+
+    identity opticalTransport {
+      base iana-interface-type;
+      description "Optical Transport.";
+    }
+
+    identity propAtm {
+      base iana-interface-type;
+      description "Proprietary ATM.";
+    }
+
+    identity voiceOverCable {
+      base iana-interface-type;
+      description
+        "Voice Over Cable Interface.";
+    }
+
+    identity infiniband {
+      base iana-interface-type;
+      description "Infiniband.";
+    }
+
+    identity teLink {
+      base iana-interface-type;
+      description "TE Link.";
+    }
+
+    identity q2931 {
+      base iana-interface-type;
+      description "Q.2931.";
+    }
+
+    identity virtualTg {
+      base iana-interface-type;
+      description "Virtual Trunk Group.";
+    }
+
+    identity sipTg {
+      base iana-interface-type;
+      description "SIP Trunk Group.";
+    }
+
+    identity sipSig {
+      base iana-interface-type;
+      description "SIP Signaling.";
+    }
+
+    identity docsCableUpstreamChannel {
+      base iana-interface-type;
+      description "CATV Upstream Channel.";
+    }
+
+    identity econet {
+      base iana-interface-type;
+      description "Acorn Econet.";
+    }
+
+    identity pon155 {
+      base iana-interface-type;
+      description
+        "FSAN 155Mb Symetrical PON interface.";
+    }
+
+    identity pon622 {
+      base iana-interface-type;
+      description
+        "FSAN 622Mb Symetrical PON interface.";
+    }
+
+    identity bridge {
+      base iana-interface-type;
+      description
+        "Transparent bridge interface.";
+    }
+
+    identity linegroup {
+      base iana-interface-type;
+      description
+        "Interface common to multiple lines.";
+    }
+
+    identity voiceEMFGD {
+      base iana-interface-type;
+      description
+        "Voice E&M Feature Group D.";
+    }
+
+    identity voiceFGDEANA {
+      base iana-interface-type;
+      description
+        "Voice FGD Exchange Access North American.";
+    }
+
+    identity voiceDID {
+      base iana-interface-type;
+      description
+        "Voice Direct Inward Dialing.";
+    }
+
+    identity mpegTransport {
+      base iana-interface-type;
+      description
+        "MPEG transport interface.";
+    }
+
+    identity sixToFour {
+      base iana-interface-type;
+      status deprecated;
+      description
+        "6to4 interface (DEPRECATED).";
+      reference
+        "RFC 4087 - IP Tunnel MIB";
+
+    }
+
+    identity gtp {
+      base iana-interface-type;
+      description
+        "GTP (GPRS Tunneling Protocol).";
+    }
+
+    identity pdnEtherLoop1 {
+      base iana-interface-type;
+      description "Paradyne EtherLoop 1.";
+    }
+
+    identity pdnEtherLoop2 {
+      base iana-interface-type;
+      description "Paradyne EtherLoop 2.";
+    }
+
+    identity opticalChannelGroup {
+      base iana-interface-type;
+      description "Optical Channel Group.";
+    }
+
+    identity homepna {
+      base iana-interface-type;
+      description "HomePNA ITU-T G.989.";
+    }
+
+    identity gfp {
+      base iana-interface-type;
+      description
+        "Generic Framing Procedure (GFP).";
+    }
+
+    identity ciscoISLvlan {
+      base iana-interface-type;
+      description
+        "Layer 2 Virtual LAN using Cisco ISL.";
+    }
+
+    identity actelisMetaLOOP {
+      base iana-interface-type;
+      description
+        "Acteleis proprietary MetaLOOP High Speed Link.";
+    }
+
+    identity fcipLink {
+      base iana-interface-type;
+      description "FCIP Link.";
+    }
+
+    identity rpr {
+      base iana-interface-type;
+      description
+        "Resilient Packet Ring Interface Type.";
+    }
+
+    identity qam {
+      base iana-interface-type;
+      description "RF Qam Interface.";
+    }
+
+    identity lmp {
+      base iana-interface-type;
+      description
+        "Link Management Protocol.";
+      reference
+        "RFC 4327 - Link Management Protocol (LMP) Management
+               Information Base (MIB)";
+
+    }
+
+    identity cblVectaStar {
+      base iana-interface-type;
+      description
+        "Cambridge Broadband Networks Limited VectaStar.";
+    }
+
+    identity docsCableMCmtsDownstream {
+      base iana-interface-type;
+      description
+        "CATV Modular CMTS Downstream Interface.";
+    }
+
+    identity adsl2 {
+      base iana-interface-type;
+      status deprecated;
+      description
+        "Asymmetric Digital Subscriber Loop Version 2
+       (DEPRECATED/OBSOLETED - please use adsl2plus(238)
+       instead).";
+      reference
+        "RFC 4706 - Definitions of Managed Objects for Asymmetric
+               Digital Subscriber Line 2 (ADSL2)";
+
+    }
+
+    identity macSecControlledIF {
+      base iana-interface-type;
+      description "MACSecControlled.";
+    }
+
+    identity macSecUncontrolledIF {
+      base iana-interface-type;
+      description "MACSecUncontrolled.";
+    }
+
+    identity aviciOpticalEther {
+      base iana-interface-type;
+      description
+        "Avici Optical Ethernet Aggregate.";
+    }
+
+    identity atmbond {
+      base iana-interface-type;
+      description "atmbond.";
+    }
+
+    identity voiceFGDOS {
+      base iana-interface-type;
+      description
+        "Voice FGD Operator Services.";
+    }
+
+    identity mocaVersion1 {
+      base iana-interface-type;
+      description
+        "MultiMedia over Coax Alliance (MoCA) Interface
+       as documented in information provided privately to IANA.";
+    }
+
+    identity ieee80216WMAN {
+      base iana-interface-type;
+      description
+        "IEEE 802.16 WMAN interface.";
+    }
+
+    identity adsl2plus {
+      base iana-interface-type;
+      description
+        "Asymmetric Digital Subscriber Loop Version 2 -
+       Version 2 Plus and all variants.";
+    }
+
+    identity dvbRcsMacLayer {
+      base iana-interface-type;
+      description "DVB-RCS MAC Layer.";
+      reference
+        "RFC 5728 - The SatLabs Group DVB-RCS MIB";
+
+    }
+
+    identity dvbTdm {
+      base iana-interface-type;
+      description "DVB Satellite TDM.";
+      reference
+        "RFC 5728 - The SatLabs Group DVB-RCS MIB";
+
+    }
+
+    identity dvbRcsTdma {
+      base iana-interface-type;
+      description "DVB-RCS TDMA.";
+      reference
+        "RFC 5728 - The SatLabs Group DVB-RCS MIB";
+
+    }
+
+    identity x86Laps {
+      base iana-interface-type;
+      description
+        "LAPS based on ITU-T X.86/Y.1323.";
+    }
+
+    identity wwanPP {
+      base iana-interface-type;
+      description "3GPP WWAN.";
+    }
+
+    identity wwanPP2 {
+      base iana-interface-type;
+      description "3GPP2 WWAN.";
+    }
+
+    identity voiceEBS {
+      base iana-interface-type;
+      description
+        "Voice P-phone EBS physical interface.";
+    }
+
+    identity ifPwType {
+      base iana-interface-type;
+      description
+        "Pseudowire interface type.";
+      reference
+        "RFC 5601 - Pseudowire (PW) Management Information Base (MIB)";
+
+    }
+
+    identity ilan {
+      base iana-interface-type;
+      description
+        "Internal LAN on a bridge per IEEE 802.1ap.";
+    }
+
+    identity pip {
+      base iana-interface-type;
+      description
+        "Provider Instance Port on a bridge per IEEE 802.1ah PBB.";
+    }
+
+    identity aluELP {
+      base iana-interface-type;
+      description
+        "Alcatel-Lucent Ethernet Link Protection.";
+    }
+
+    identity gpon {
+      base iana-interface-type;
+      description
+        "Gigabit-capable passive optical networks (G-PON) as per
+       ITU-T G.948.";
+    }
+
+    identity vdsl2 {
+      base iana-interface-type;
+      description
+        "Very high speed digital subscriber line Version 2
+       (as per ITU-T Recommendation G.993.2).";
+      reference
+        "RFC 5650 - Definitions of Managed Objects for Very High
+               Speed Digital Subscriber Line 2 (VDSL2)";
+
+    }
+
+    identity capwapDot11Profile {
+      base iana-interface-type;
+      description "WLAN Profile Interface.";
+      reference
+        "RFC 5834 - Control and Provisioning of Wireless Access
+               Points (CAPWAP) Protocol Binding MIB for
+               IEEE 802.11";
+
+    }
+
+    identity capwapDot11Bss {
+      base iana-interface-type;
+      description "WLAN BSS Interface.";
+      reference
+        "RFC 5834 - Control and Provisioning of Wireless Access
+               Points (CAPWAP) Protocol Binding MIB for
+               IEEE 802.11";
+
+    }
+
+    identity capwapWtpVirtualRadio {
+      base iana-interface-type;
+      description
+        "WTP Virtual Radio Interface.";
+      reference
+        "RFC 5833 - Control and Provisioning of Wireless Access
+               Points (CAPWAP) Protocol Base MIB";
+
+    }
+
+    identity bits {
+      base iana-interface-type;
+      description "bitsport.";
+    }
+
+    identity docsCableUpstreamRfPort {
+      base iana-interface-type;
+      description
+        "DOCSIS CATV Upstream RF Port.";
+    }
+
+    identity cableDownstreamRfPort {
+      base iana-interface-type;
+      description "CATV downstream RF Port.";
+    }
+
+    identity vmwareVirtualNic {
+      base iana-interface-type;
+      description
+        "VMware Virtual Network Interface.";
+    }
+
+    identity ieee802154 {
+      base iana-interface-type;
+      description
+        "IEEE 802.15.4 WPAN interface.";
+      reference
+        "IEEE 802.15.4-2006";
+
+    }
+
+    identity otnOdu {
+      base iana-interface-type;
+      description "OTN Optical Data Unit.";
+    }
+
+    identity otnOtu {
+      base iana-interface-type;
+      description
+        "OTN Optical channel Transport Unit.";
+    }
+
+    identity ifVfiType {
+      base iana-interface-type;
+      description
+        "VPLS Forwarding Instance Interface Type.";
+    }
+
+    identity g9981 {
+      base iana-interface-type;
+      description
+        "G.998.1 bonded interface.";
+    }
+
+    identity g9982 {
+      base iana-interface-type;
+      description
+        "G.998.2 bonded interface.";
+    }
+
+    identity g9983 {
+      base iana-interface-type;
+      description
+        "G.998.3 bonded interface.";
+    }
+
+    identity aluEpon {
+      base iana-interface-type;
+      description
+        "Ethernet Passive Optical Networks (E-PON).";
+    }
+
+    identity aluEponOnu {
+      base iana-interface-type;
+      description
+        "EPON Optical Network Unit.";
+    }
+
+    identity aluEponPhysicalUni {
+      base iana-interface-type;
+      description
+        "EPON physical User to Network interface.";
+    }
+
+    identity aluEponLogicalLink {
+      base iana-interface-type;
+      description
+        "The emulation of a point-to-point link over the EPON
+       layer.";
+    }
+
+    identity aluGponOnu {
+      base iana-interface-type;
+      description
+        "GPON Optical Network Unit.";
+      reference
+        "ITU-T G.984.2";
+
+    }
+
+    identity aluGponPhysicalUni {
+      base iana-interface-type;
+      description
+        "GPON physical User to Network interface.";
+      reference
+        "ITU-T G.984.2";
+
+    }
+
+    identity vmwareNicTeam {
+      base iana-interface-type;
+      description "VMware NIC Team.";
+    }
+  }  // module iana-if-type
diff --git a/utils/sysrepo-plugins/yang/ietf/ietf-interfaces.yang b/utils/sysrepo-plugins/yang/ietf/ietf-interfaces.yang
new file mode 100644
index 000000000..f66c205ce
--- /dev/null
+++ b/utils/sysrepo-plugins/yang/ietf/ietf-interfaces.yang
@@ -0,0 +1,1123 @@
+module ietf-interfaces {
+  yang-version 1.1;
+  namespace "urn:ietf:params:xml:ns:yang:ietf-interfaces";
+  prefix if;
+
+  import ietf-yang-types {
+    prefix yang;
+  }
+
+  organization
+    "IETF NETMOD (Network Modeling) Working Group";
+
+  contact
+    "WG Web:   <https://datatracker.ietf.org/wg/netmod/>
+     WG List:  <mailto:netmod@ietf.org>
+
+     Editor:   Martin Bjorklund
+               <mailto:mbj@tail-f.com>";
+
+  description
+    "This module contains a collection of YANG definitions for
+     managing network interfaces.
+
+     Copyright (c) 2018 IETF Trust and the persons identified as
+     authors of the code.  All rights reserved.
+
+     Redistribution and use in source and binary forms, with or
+     without modification, is permitted pursuant to, and subject
+     to the license terms contained in, the Simplified BSD License
+     set forth in Section 4.c of the IETF Trust's Legal Provisions
+     Relating to IETF Documents
+     (https://trustee.ietf.org/license-info).
+
+     This version of this YANG module is part of RFC 8343; see
+     the RFC itself for full legal notices.";
+
+  revision 2018-02-20 {
+    description
+      "Updated to support NMDA.";
+    reference
+      "RFC 8343: A YANG Data Model for Interface Management";
+  }
+
+  revision 2014-05-08 {
+    description
+      "Initial revision.";
+    reference
+      "RFC 7223: A YANG Data Model for Interface Management";
+  }
+
+  /*
+   * Typedefs
+   */
+
+  typedef interface-ref {
+    type leafref {
+      path "/if:interfaces/if:interface/if:name";
+    }
+    description
+      "This type is used by data models that need to reference
+       interfaces.";
+  }
+
+  /*
+   * Identities
+   */
+
+  identity interface-type {
+    description
+      "Base identity from which specific interface types are
+       derived.";
+  }
+
+  /*
+   * Features
+   */
+
+  feature arbitrary-names {
+    description
+      "This feature indicates that the device allows user-controlled
+       interfaces to be named arbitrarily.";
+  }
+  feature pre-provisioning {
+    description
+      "This feature indicates that the device supports
+       pre-provisioning of interface configuration, i.e., it is
+       possible to configure an interface whose physical interface
+       hardware is not present on the device.";
+  }
+  feature if-mib {
+    description
+      "This feature indicates that the device implements
+       the IF-MIB.";
+    reference
+      "RFC 2863: The Interfaces Group MIB";
+  }
+
+  /*
+   * Data nodes
+   */
+
+  container interfaces {
+    description
+      "Interface parameters.";
+
+    list interface {
+      key "name";
+
+      description
+        "The list of interfaces on the device.
+
+         The status of an interface is available in this list in the
+         operational state.  If the configuration of a
+         system-controlled interface cannot be used by the system
+         (e.g., the interface hardware present does not match the
+         interface type), then the configuration is not applied to
+         the system-controlled interface shown in the operational
+         state.  If the configuration of a user-controlled interface
+         cannot be used by the system, the configured interface is
+         not instantiated in the operational state.
+
+         System-controlled interfaces created by the system are
+         always present in this list in the operational state,
+         whether or not they are configured.";
+
+     leaf name {
+        type string;
+        description
+          "The name of the interface.
+
+           A device MAY restrict the allowed values for this leaf,
+           possibly depending on the type of the interface.
+           For system-controlled interfaces, this leaf is the
+           device-specific name of the interface.
+
+           If a client tries to create configuration for a
+           system-controlled interface that is not present in the
+           operational state, the server MAY reject the request if
+           the implementation does not support pre-provisioning of
+           interfaces or if the name refers to an interface that can
+           never exist in the system.  A Network Configuration
+           Protocol (NETCONF) server MUST reply with an rpc-error
+           with the error-tag 'invalid-value' in this case.
+
+           If the device supports pre-provisioning of interface
+           configuration, the 'pre-provisioning' feature is
+           advertised.
+
+           If the device allows arbitrarily named user-controlled
+           interfaces, the 'arbitrary-names' feature is advertised.
+
+           When a configured user-controlled interface is created by
+           the system, it is instantiated with the same name in the
+           operational state.
+
+           A server implementation MAY map this leaf to the ifName
+           MIB object.  Such an implementation needs to use some
+           mechanism to handle the differences in size and characters
+           allowed between this leaf and ifName.  The definition of
+           such a mechanism is outside the scope of this document.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifName";
+      }
+
+      leaf description {
+        type string;
+        description
+          "A textual description of the interface.
+
+           A server implementation MAY map this leaf to the ifAlias
+           MIB object.  Such an implementation needs to use some
+           mechanism to handle the differences in size and characters
+           allowed between this leaf and ifAlias.  The definition of
+           such a mechanism is outside the scope of this document.
+
+           Since ifAlias is defined to be stored in non-volatile
+           storage, the MIB implementation MUST map ifAlias to the
+           value of 'description' in the persistently stored
+           configuration.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifAlias";
+      }
+
+      leaf type {
+        type identityref {
+          base interface-type;
+        }
+        mandatory true;
+        description
+          "The type of the interface.
+
+           When an interface entry is created, a server MAY
+           initialize the type leaf with a valid value, e.g., if it
+           is possible to derive the type from the name of the
+           interface.
+
+           If a client tries to set the type of an interface to a
+           value that can never be used by the system, e.g., if the
+           type is not supported or if the type does not match the
+           name of the interface, the server MUST reject the request.
+           A NETCONF server MUST reply with an rpc-error with the
+           error-tag 'invalid-value' in this case.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifType";
+      }
+
+      leaf enabled {
+        type boolean;
+        default "true";
+        description
+          "This leaf contains the configured, desired state of the
+           interface.
+
+           Systems that implement the IF-MIB use the value of this
+           leaf in the intended configuration to set
+           IF-MIB.ifAdminStatus to 'up' or 'down' after an ifEntry
+           has been initialized, as described in RFC 2863.
+
+           Changes in this leaf in the intended configuration are
+           reflected in ifAdminStatus.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifAdminStatus";
+      }
+
+      leaf link-up-down-trap-enable {
+        if-feature if-mib;
+        type enumeration {
+          enum enabled {
+            value 1;
+            description
+              "The device will generate linkUp/linkDown SNMP
+               notifications for this interface.";
+          }
+          enum disabled {
+            value 2;
+            description
+              "The device will not generate linkUp/linkDown SNMP
+               notifications for this interface.";
+          }
+        }
+        description
+          "Controls whether linkUp/linkDown SNMP notifications
+           should be generated for this interface.
+
+           If this node is not configured, the value 'enabled' is
+           operationally used by the server for interfaces that do
+           not operate on top of any other interface (i.e., there are
+           no 'lower-layer-if' entries), and 'disabled' otherwise.";
+        reference
+          "RFC 2863: The Interfaces Group MIB -
+                     ifLinkUpDownTrapEnable";
+      }
+
+      leaf admin-status {
+        if-feature if-mib;
+        type enumeration {
+          enum up {
+            value 1;
+            description
+              "Ready to pass packets.";
+          }
+          enum down {
+            value 2;
+            description
+              "Not ready to pass packets and not in some test mode.";
+          }
+          enum testing {
+            value 3;
+            description
+              "In some test mode.";
+          }
+        }
+        config false;
+        mandatory true;
+        description
+          "The desired state of the interface.
+
+           This leaf has the same read semantics as ifAdminStatus.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifAdminStatus";
+      }
+
+      leaf oper-status {
+        type enumeration {
+          enum up {
+            value 1;
+            description
+              "Ready to pass packets.";
+          }
+          enum down {
+            value 2;
+
+            description
+              "The interface does not pass any packets.";
+          }
+          enum testing {
+            value 3;
+            description
+              "In some test mode.  No operational packets can
+               be passed.";
+          }
+          enum unknown {
+            value 4;
+            description
+              "Status cannot be determined for some reason.";
+          }
+          enum dormant {
+            value 5;
+            description
+              "Waiting for some external event.";
+          }
+          enum not-present {
+            value 6;
+            description
+              "Some component (typically hardware) is missing.";
+          }
+          enum lower-layer-down {
+            value 7;
+            description
+              "Down due to state of lower-layer interface(s).";
+          }
+        }
+        config false;
+        mandatory true;
+        description
+          "The current operational state of the interface.
+
+           This leaf has the same semantics as ifOperStatus.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifOperStatus";
+      }
+
+      leaf last-change {
+        type yang:date-and-time;
+        config false;
+        description
+          "The time the interface entered its current operational
+           state.  If the current state was entered prior to the
+           last re-initialization of the local network management
+           subsystem, then this node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifLastChange";
+      }
+
+      leaf if-index {
+        if-feature if-mib;
+        type int32 {
+          range "1..2147483647";
+        }
+        config false;
+        mandatory true;
+        description
+          "The ifIndex value for the ifEntry represented by this
+           interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifIndex";
+      }
+
+      leaf phys-address {
+        type yang:phys-address;
+        config false;
+        description
+          "The interface's address at its protocol sub-layer.  For
+           example, for an 802.x interface, this object normally
+           contains a Media Access Control (MAC) address.  The
+           interface's media-specific modules must define the bit
+           and byte ordering and the format of the value of this
+           object.  For interfaces that do not have such an address
+           (e.g., a serial line), this node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifPhysAddress";
+      }
+
+      leaf-list higher-layer-if {
+        type interface-ref;
+        config false;
+        description
+          "A list of references to interfaces layered on top of this
+           interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifStackTable";
+      }
+
+      leaf-list lower-layer-if {
+        type interface-ref;
+        config false;
+
+        description
+          "A list of references to interfaces layered underneath this
+           interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifStackTable";
+      }
+
+      leaf speed {
+        type yang:gauge64;
+        units "bits/second";
+        config false;
+        description
+            "An estimate of the interface's current bandwidth in bits
+             per second.  For interfaces that do not vary in
+             bandwidth or for those where no accurate estimation can
+             be made, this node should contain the nominal bandwidth.
+             For interfaces that have no concept of bandwidth, this
+             node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB -
+                     ifSpeed, ifHighSpeed";
+      }
+
+      container statistics {
+        config false;
+        description
+          "A collection of interface-related statistics objects.";
+
+        leaf discontinuity-time {
+          type yang:date-and-time;
+          mandatory true;
+          description
+            "The time on the most recent occasion at which any one or
+             more of this interface's counters suffered a
+             discontinuity.  If no such discontinuities have occurred
+             since the last re-initialization of the local management
+             subsystem, then this node contains the time the local
+             management subsystem re-initialized itself.";
+        }
+
+        leaf in-octets {
+          type yang:counter64;
+          description
+            "The total number of octets received on the interface,
+             including framing characters.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCInOctets";
+        }
+
+        leaf in-unicast-pkts {
+          type yang:counter64;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were not addressed to a
+             multicast or broadcast address at this sub-layer.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCInUcastPkts";
+        }
+
+        leaf in-broadcast-pkts {
+          type yang:counter64;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were addressed to a broadcast
+             address at this sub-layer.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCInBroadcastPkts";
+        }
+
+        leaf in-multicast-pkts {
+          type yang:counter64;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were addressed to a multicast
+             address at this sub-layer.  For a MAC-layer protocol,
+             this includes both Group and Functional addresses.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCInMulticastPkts";
+        }
+
+        leaf in-discards {
+          type yang:counter32;
+          description
+            "The number of inbound packets that were chosen to be
+             discarded even though no errors had been detected to
+             prevent their being deliverable to a higher-layer
+             protocol.  One possible reason for discarding such a
+             packet could be to free up buffer space.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInDiscards";
+        }
+
+        leaf in-errors {
+          type yang:counter32;
+          description
+            "For packet-oriented interfaces, the number of inbound
+             packets that contained errors preventing them from being
+             deliverable to a higher-layer protocol.  For character-
+             oriented or fixed-length interfaces, the number of
+             inbound transmission units that contained errors
+             preventing them from being deliverable to a higher-layer
+             protocol.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInErrors";
+        }
+
+        leaf in-unknown-protos {
+          type yang:counter32;
+
+          description
+            "For packet-oriented interfaces, the number of packets
+             received via the interface that were discarded because
+             of an unknown or unsupported protocol.  For
+             character-oriented or fixed-length interfaces that
+             support protocol multiplexing, the number of
+             transmission units received via the interface that were
+             discarded because of an unknown or unsupported protocol.
+             For any interface that does not support protocol
+             multiplexing, this counter is not present.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInUnknownProtos";
+        }
+
+        leaf out-octets {
+          type yang:counter64;
+          description
+            "The total number of octets transmitted out of the
+             interface, including framing characters.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCOutOctets";
+        }
+
+        leaf out-unicast-pkts {
+          type yang:counter64;
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted and that were not addressed
+             to a multicast or broadcast address at this sub-layer,
+             including those that were discarded or not sent.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCOutUcastPkts";
+        }
+
+        leaf out-broadcast-pkts {
+          type yang:counter64;
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted and that were addressed to a
+             broadcast address at this sub-layer, including those
+             that were discarded or not sent.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCOutBroadcastPkts";
+        }
+
+        leaf out-multicast-pkts {
+          type yang:counter64;
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted and that were addressed to a
+             multicast address at this sub-layer, including those
+             that were discarded or not sent.  For a MAC-layer
+             protocol, this includes both Group and Functional
+             addresses.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCOutMulticastPkts";
+        }
+
+        leaf out-discards {
+          type yang:counter32;
+          description
+            "The number of outbound packets that were chosen to be
+             discarded even though no errors had been detected to
+             prevent their being transmitted.  One possible reason
+             for discarding such a packet could be to free up buffer
+             space.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifOutDiscards";
+        }
+
+        leaf out-errors {
+          type yang:counter32;
+          description
+            "For packet-oriented interfaces, the number of outbound
+             packets that could not be transmitted because of errors.
+             For character-oriented or fixed-length interfaces, the
+             number of outbound transmission units that could not be
+             transmitted because of errors.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifOutErrors";
+        }
+      }
+
+    }
+  }
+
+  /*
+   * Legacy typedefs
+   */
+
+  typedef interface-state-ref {
+    type leafref {
+      path "/if:interfaces-state/if:interface/if:name";
+    }
+    status deprecated;
+    description
+      "This type is used by data models that need to reference
+       the operationally present interfaces.";
+  }
+
+  /*
+   * Legacy operational state data nodes
+   */
+
+  container interfaces-state {
+    config false;
+    status deprecated;
+    description
+      "Data nodes for the operational state of interfaces.";
+
+    list interface {
+      key "name";
+      status deprecated;
+
+      description
+        "The list of interfaces on the device.
+
+         System-controlled interfaces created by the system are
+         always present in this list, whether or not they are
+         configured.";
+
+      leaf name {
+        type string;
+        status deprecated;
+        description
+          "The name of the interface.
+
+           A server implementation MAY map this leaf to the ifName
+           MIB object.  Such an implementation needs to use some
+           mechanism to handle the differences in size and characters
+           allowed between this leaf and ifName.  The definition of
+           such a mechanism is outside the scope of this document.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifName";
+      }
+
+      leaf type {
+        type identityref {
+          base interface-type;
+        }
+        mandatory true;
+        status deprecated;
+        description
+          "The type of the interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifType";
+      }
+
+      leaf admin-status {
+        if-feature if-mib;
+        type enumeration {
+          enum up {
+            value 1;
+            description
+              "Ready to pass packets.";
+          }
+          enum down {
+            value 2;
+            description
+              "Not ready to pass packets and not in some test mode.";
+          }
+          enum testing {
+            value 3;
+            description
+              "In some test mode.";
+          }
+        }
+        mandatory true;
+        status deprecated;
+        description
+          "The desired state of the interface.
+
+           This leaf has the same read semantics as ifAdminStatus.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifAdminStatus";
+      }
+
+      leaf oper-status {
+        type enumeration {
+          enum up {
+            value 1;
+            description
+              "Ready to pass packets.";
+          }
+          enum down {
+            value 2;
+            description
+              "The interface does not pass any packets.";
+          }
+          enum testing {
+            value 3;
+            description
+              "In some test mode.  No operational packets can
+               be passed.";
+          }
+          enum unknown {
+            value 4;
+            description
+              "Status cannot be determined for some reason.";
+          }
+          enum dormant {
+            value 5;
+            description
+              "Waiting for some external event.";
+          }
+          enum not-present {
+            value 6;
+            description
+              "Some component (typically hardware) is missing.";
+          }
+          enum lower-layer-down {
+            value 7;
+            description
+              "Down due to state of lower-layer interface(s).";
+          }
+        }
+        mandatory true;
+        status deprecated;
+        description
+          "The current operational state of the interface.
+
+           This leaf has the same semantics as ifOperStatus.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifOperStatus";
+      }
+
+      leaf last-change {
+        type yang:date-and-time;
+        status deprecated;
+        description
+          "The time the interface entered its current operational
+           state.  If the current state was entered prior to the
+           last re-initialization of the local network management
+           subsystem, then this node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifLastChange";
+      }
+
+      leaf if-index {
+        if-feature if-mib;
+        type int32 {
+          range "1..2147483647";
+        }
+        mandatory true;
+        status deprecated;
+        description
+          "The ifIndex value for the ifEntry represented by this
+           interface.";
+
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifIndex";
+      }
+
+      leaf phys-address {
+        type yang:phys-address;
+        status deprecated;
+        description
+          "The interface's address at its protocol sub-layer.  For
+           example, for an 802.x interface, this object normally
+           contains a Media Access Control (MAC) address.  The
+           interface's media-specific modules must define the bit
+           and byte ordering and the format of the value of this
+           object.  For interfaces that do not have such an address
+           (e.g., a serial line), this node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifPhysAddress";
+      }
+
+      leaf-list higher-layer-if {
+        type interface-state-ref;
+        status deprecated;
+        description
+          "A list of references to interfaces layered on top of this
+           interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifStackTable";
+      }
+
+      leaf-list lower-layer-if {
+        type interface-state-ref;
+        status deprecated;
+        description
+          "A list of references to interfaces layered underneath this
+           interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifStackTable";
+      }
+
+      leaf speed {
+        type yang:gauge64;
+        units "bits/second";
+        status deprecated;
+        description
+            "An estimate of the interface's current bandwidth in bits
+             per second.  For interfaces that do not vary in
+             bandwidth or for those where no accurate estimation can
+
+             be made, this node should contain the nominal bandwidth.
+             For interfaces that have no concept of bandwidth, this
+             node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB -
+                     ifSpeed, ifHighSpeed";
+      }
+
+      container statistics {
+        status deprecated;
+        description
+          "A collection of interface-related statistics objects.";
+
+        leaf discontinuity-time {
+          type yang:date-and-time;
+          mandatory true;
+          status deprecated;
+          description
+            "The time on the most recent occasion at which any one or
+             more of this interface's counters suffered a
+             discontinuity.  If no such discontinuities have occurred
+             since the last re-initialization of the local management
+             subsystem, then this node contains the time the local
+             management subsystem re-initialized itself.";
+        }
+
+        leaf in-octets {
+          type yang:counter64;
+          status deprecated;
+          description
+            "The total number of octets received on the interface,
+             including framing characters.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCInOctets";
+        }
+
+        leaf in-unicast-pkts {
+          type yang:counter64;
+          status deprecated;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were not addressed to a
+             multicast or broadcast address at this sub-layer.
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCInUcastPkts";
+        }
+
+        leaf in-broadcast-pkts {
+          type yang:counter64;
+          status deprecated;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were addressed to a broadcast
+             address at this sub-layer.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCInBroadcastPkts";
+        }
+
+        leaf in-multicast-pkts {
+          type yang:counter64;
+          status deprecated;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were addressed to a multicast
+             address at this sub-layer.  For a MAC-layer protocol,
+             this includes both Group and Functional addresses.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCInMulticastPkts";
+        }
+
+        leaf in-discards {
+          type yang:counter32;
+          status deprecated;
+
+          description
+            "The number of inbound packets that were chosen to be
+             discarded even though no errors had been detected to
+             prevent their being deliverable to a higher-layer
+             protocol.  One possible reason for discarding such a
+             packet could be to free up buffer space.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInDiscards";
+        }
+
+        leaf in-errors {
+          type yang:counter32;
+          status deprecated;
+          description
+            "For packet-oriented interfaces, the number of inbound
+             packets that contained errors preventing them from being
+             deliverable to a higher-layer protocol.  For character-
+             oriented or fixed-length interfaces, the number of
+             inbound transmission units that contained errors
+             preventing them from being deliverable to a higher-layer
+             protocol.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInErrors";
+        }
+
+        leaf in-unknown-protos {
+          type yang:counter32;
+          status deprecated;
+          description
+            "For packet-oriented interfaces, the number of packets
+             received via the interface that were discarded because
+             of an unknown or unsupported protocol.  For
+             character-oriented or fixed-length interfaces that
+             support protocol multiplexing, the number of
+             transmission units received via the interface that were
+             discarded because of an unknown or unsupported protocol.
+             For any interface that does not support protocol
+             multiplexing, this counter is not present.
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInUnknownProtos";
+        }
+
+        leaf out-octets {
+          type yang:counter64;
+          status deprecated;
+          description
+            "The total number of octets transmitted out of the
+             interface, including framing characters.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCOutOctets";
+        }
+
+        leaf out-unicast-pkts {
+          type yang:counter64;
+          status deprecated;
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted and that were not addressed
+             to a multicast or broadcast address at this sub-layer,
+             including those that were discarded or not sent.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCOutUcastPkts";
+        }
+
+        leaf out-broadcast-pkts {
+          type yang:counter64;
+          status deprecated;
+
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted and that were addressed to a
+             broadcast address at this sub-layer, including those
+             that were discarded or not sent.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCOutBroadcastPkts";
+        }
+
+        leaf out-multicast-pkts {
+          type yang:counter64;
+          status deprecated;
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted and that were addressed to a
+             multicast address at this sub-layer, including those
+             that were discarded or not sent.  For a MAC-layer
+             protocol, this includes both Group and Functional
+             addresses.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCOutMulticastPkts";
+        }
+
+        leaf out-discards {
+          type yang:counter32;
+          status deprecated;
+          description
+            "The number of outbound packets that were chosen to be
+             discarded even though no errors had been detected to
+             prevent their being transmitted.  One possible reason
+             for discarding such a packet could be to free up buffer
+             space.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifOutDiscards";
+        }
+
+        leaf out-errors {
+          type yang:counter32;
+          status deprecated;
+          description
+            "For packet-oriented interfaces, the number of outbound
+             packets that could not be transmitted because of errors.
+             For character-oriented or fixed-length interfaces, the
+             number of outbound transmission units that could not be
+             transmitted because of errors.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifOutErrors";
+        }
+      }
+    }
+  }
+}
diff --git a/utils/sysrepo-plugins/yang/ietf/ietf-ip@2014-06-16.yang b/utils/sysrepo-plugins/yang/ietf/ietf-ip@2014-06-16.yang
new file mode 100644
index 000000000..79606cc07
--- /dev/null
+++ b/utils/sysrepo-plugins/yang/ietf/ietf-ip@2014-06-16.yang
@@ -0,0 +1,742 @@
+module ietf-ip {
+
+    yang-version 1;
+
+    namespace
+      "urn:ietf:params:xml:ns:yang:ietf-ip";
+
+    prefix ip;
+
+    import ietf-interfaces {
+      prefix if;
+    }
+    import ietf-inet-types {
+      prefix inet;
+    }
+    import ietf-yang-types {
+      prefix yang;
+    }
+
+    organization
+      "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
+
+    contact
+      "WG Web:   <http://tools.ietf.org/wg/netmod/>
+    WG List:  <mailto:netmod@ietf.org>
+
+    WG Chair: Thomas Nadeau
+              <mailto:tnadeau@lucidvision.com>
+
+    WG Chair: Juergen Schoenwaelder
+              <mailto:j.schoenwaelder@jacobs-university.de>
+
+    Editor:   Martin Bjorklund
+              <mailto:mbj@tail-f.com>";
+
+    description
+      "This module contains a collection of YANG definitions for
+    configuring IP implementations.
+
+    Copyright (c) 2014 IETF Trust and the persons identified as
+    authors of the code.  All rights reserved.
+
+    Redistribution and use in source and binary forms, with or
+    without modification, is permitted pursuant to, and subject
+    to the license terms contained in, the Simplified BSD License
+    set forth in Section 4.c of the IETF Trust's Legal Provisions
+    Relating to IETF Documents
+    (http://trustee.ietf.org/license-info).
+
+    This version of this YANG module is part of RFC 7277; see
+    the RFC itself for full legal notices.";
+
+    revision "2014-06-16" {
+      description "Initial revision.";
+      reference
+        "RFC 7277: A YANG Data Model for IP Management";
+
+    }
+
+
+    feature ipv4-non-contiguous-netmasks {
+      description
+        "Indicates support for configuring non-contiguous
+      subnet masks.";
+    }
+
+    feature ipv6-privacy-autoconf {
+      description
+        "Indicates support for Privacy Extensions for Stateless Address
+      Autoconfiguration in IPv6.";
+      reference
+        "RFC 4941: Privacy Extensions for Stateless Address
+              Autoconfiguration in IPv6";
+
+    }
+
+    typedef ip-address-origin {
+      type enumeration {
+        enum "other" {
+          value 0;
+          description
+            "None of the following.";
+        }
+        enum "static" {
+          value 1;
+          description
+            "Indicates that the address has been statically
+          configured - for example, using NETCONF or a Command Line
+          Interface.";
+        }
+        enum "dhcp" {
+          value 2;
+          description
+            "Indicates an address that has been assigned to this
+          system by a DHCP server.";
+        }
+        enum "link-layer" {
+          value 3;
+          description
+            "Indicates an address created by IPv6 stateless
+          autoconfiguration that embeds a link-layer address in its
+          interface identifier.";
+        }
+        enum "random" {
+          value 4;
+          description
+            "Indicates an address chosen by the system at
+
+          random, e.g., an IPv4 address within 169.254/16, an
+          RFC 4941 temporary address, or an RFC 7217 semantically
+          opaque address.";
+          reference
+            "RFC 4941: Privacy Extensions for Stateless Address
+                  Autoconfiguration in IPv6
+             RFC 7217: A Method for Generating Semantically Opaque
+                  Interface Identifiers with IPv6 Stateless
+                  Address Autoconfiguration (SLAAC)";
+
+        }
+      }
+      description
+        "The origin of an address.";
+    }
+
+    typedef neighbor-origin {
+      type enumeration {
+        enum "other" {
+          value 0;
+          description
+            "None of the following.";
+        }
+        enum "static" {
+          value 1;
+          description
+            "Indicates that the mapping has been statically
+          configured - for example, using NETCONF or a Command Line
+          Interface.";
+        }
+        enum "dynamic" {
+          value 2;
+          description
+            "Indicates that the mapping has been dynamically resolved
+          using, e.g., IPv4 ARP or the IPv6 Neighbor Discovery
+          protocol.";
+        }
+      }
+      description
+        "The origin of a neighbor entry.";
+    }
+
+    augment /if:interfaces/if:interface {
+      description
+        "Parameters for configuring IP on interfaces.
+
+      If an interface is not capable of running IP, the server
+      must not allow the client to configure these parameters.";
+      container ipv4 {
+        presence
+          "Enables IPv4 unless the 'enabled' leaf
+        (which defaults to 'true') is set to 'false'";
+        description
+          "Parameters for the IPv4 address family.";
+        leaf enabled {
+          type boolean;
+          default 'true';
+          description
+            "Controls whether IPv4 is enabled or disabled on this
+          interface.  When IPv4 is enabled, this interface is
+          connected to an IPv4 stack, and the interface can send
+          and receive IPv4 packets.";
+        }
+
+        leaf forwarding {
+          type boolean;
+          default 'false';
+          description
+            "Controls IPv4 packet forwarding of datagrams received by,
+          but not addressed to, this interface.  IPv4 routers
+          forward datagrams.  IPv4 hosts do not (except those
+          source-routed via the host).";
+        }
+
+        leaf mtu {
+          type uint16 {
+            range "68..max";
+          }
+          units "octets";
+          description
+            "The size, in octets, of the largest IPv4 packet that the
+          interface will send and receive.
+
+          The server may restrict the allowed values for this leaf,
+          depending on the interface's type.
+
+          If this leaf is not configured, the operationally used MTU
+          depends on the interface's type.";
+          reference
+            "RFC 791: Internet Protocol";
+
+        }
+
+        list address {
+          key "ip";
+          description
+            "The list of configured IPv4 addresses on the interface.";
+          leaf ip {
+            type inet:ipv4-address-no-zone;
+            description
+              "The IPv4 address on the interface.";
+          }
+
+          choice subnet {
+            mandatory true;
+            description
+              "The subnet can be specified as a prefix-length, or,
+            if the server supports non-contiguous netmasks, as
+            a netmask.";
+            leaf prefix-length {
+              type uint8 {
+                range "0..32";
+              }
+              description
+                "The length of the subnet prefix.";
+            }
+            leaf netmask {
+              if-feature ipv4-non-contiguous-netmasks;
+              type yang:dotted-quad;
+              description
+                "The subnet specified as a netmask.";
+            }
+          }  // choice subnet
+        }  // list address
+
+        list neighbor {
+          key "ip";
+          description
+            "A list of mappings from IPv4 addresses to
+          link-layer addresses.
+
+          Entries in this list are used as static entries in the
+          ARP Cache.";
+          reference
+            "RFC 826: An Ethernet Address Resolution Protocol";
+
+          leaf ip {
+            type inet:ipv4-address-no-zone;
+            description
+              "The IPv4 address of the neighbor node.";
+          }
+
+          leaf link-layer-address {
+            type yang:phys-address;
+            mandatory true;
+            description
+              "The link-layer address of the neighbor node.";
+          }
+        }  // list neighbor
+      }  // container ipv4
+
+      container ipv6 {
+        presence
+          "Enables IPv6 unless the 'enabled' leaf
+        (which defaults to 'true') is set to 'false'";
+        description
+          "Parameters for the IPv6 address family.";
+        leaf enabled {
+          type boolean;
+          default 'true';
+          description
+            "Controls whether IPv6 is enabled or disabled on this
+          interface.  When IPv6 is enabled, this interface is
+          connected to an IPv6 stack, and the interface can send
+          and receive IPv6 packets.";
+        }
+
+        leaf forwarding {
+          type boolean;
+          default 'false';
+          description
+            "Controls IPv6 packet forwarding of datagrams received by,
+          but not addressed to, this interface.  IPv6 routers
+          forward datagrams.  IPv6 hosts do not (except those
+          source-routed via the host).";
+          reference
+            "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
+                  Section 6.2.1, IsRouter";
+
+        }
+
+        leaf mtu {
+          type uint32 {
+            range "1280..max";
+          }
+          units "octets";
+          description
+            "The size, in octets, of the largest IPv6 packet that the
+          interface will send and receive.
+
+          The server may restrict the allowed values for this leaf,
+          depending on the interface's type.
+
+          If this leaf is not configured, the operationally used MTU
+          depends on the interface's type.";
+          reference
+            "RFC 2460: Internet Protocol, Version 6 (IPv6) Specification
+                  Section 5";
+
+        }
+
+        list address {
+          key "ip";
+          description
+            "The list of configured IPv6 addresses on the interface.";
+          leaf ip {
+            type inet:ipv6-address-no-zone;
+            description
+              "The IPv6 address on the interface.";
+          }
+
+          leaf prefix-length {
+            type uint8 {
+              range "0..128";
+            }
+            mandatory true;
+            description
+              "The length of the subnet prefix.";
+          }
+        }  // list address
+
+        list neighbor {
+          key "ip";
+          description
+            "A list of mappings from IPv6 addresses to
+          link-layer addresses.
+
+          Entries in this list are used as static entries in the
+          Neighbor Cache.";
+          reference
+            "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)";
+
+          leaf ip {
+            type inet:ipv6-address-no-zone;
+            description
+              "The IPv6 address of the neighbor node.";
+          }
+
+          leaf link-layer-address {
+            type yang:phys-address;
+            mandatory true;
+            description
+              "The link-layer address of the neighbor node.";
+          }
+        }  // list neighbor
+
+        leaf dup-addr-detect-transmits {
+          type uint32;
+          default '1';
+          description
+            "The number of consecutive Neighbor Solicitation messages
+          sent while performing Duplicate Address Detection on a
+          tentative address.  A value of zero indicates that
+          Duplicate Address Detection is not performed on
+          tentative addresses.  A value of one indicates a single
+          transmission with no follow-up retransmissions.";
+          reference
+            "RFC 4862: IPv6 Stateless Address Autoconfiguration";
+
+        }
+
+        container autoconf {
+          description
+            "Parameters to control the autoconfiguration of IPv6
+          addresses, as described in RFC 4862.";
+          reference
+            "RFC 4862: IPv6 Stateless Address Autoconfiguration";
+
+          leaf create-global-addresses {
+            type boolean;
+            default 'true';
+            description
+              "If enabled, the host creates global addresses as
+            described in RFC 4862.";
+            reference
+              "RFC 4862: IPv6 Stateless Address Autoconfiguration
+                  Section 5.5";
+
+          }
+
+          leaf create-temporary-addresses {
+            if-feature ipv6-privacy-autoconf;
+            type boolean;
+            default 'false';
+            description
+              "If enabled, the host creates temporary addresses as
+            described in RFC 4941.";
+            reference
+              "RFC 4941: Privacy Extensions for Stateless Address
+                  Autoconfiguration in IPv6";
+
+          }
+
+          leaf temporary-valid-lifetime {
+            if-feature ipv6-privacy-autoconf;
+            type uint32;
+            units "seconds";
+            default '604800';
+            description
+              "The time period during which the temporary address
+            is valid.";
+            reference
+              "RFC 4941: Privacy Extensions for Stateless Address
+                  Autoconfiguration in IPv6
+                  - TEMP_VALID_LIFETIME";
+
+          }
+
+          leaf temporary-preferred-lifetime {
+            if-feature ipv6-privacy-autoconf;
+            type uint32;
+            units "seconds";
+            default '86400';
+            description
+              "The time period during which the temporary address is
+            preferred.";
+            reference
+              "RFC 4941: Privacy Extensions for Stateless Address
+                  Autoconfiguration in IPv6
+                  - TEMP_PREFERRED_LIFETIME";
+
+          }
+        }  // container autoconf
+      }  // container ipv6
+    }
+
+    augment /if:interfaces-state/if:interface {
+      description
+        "Data nodes for the operational state of IP on interfaces.";
+      container ipv4 {
+        presence
+          "Present if IPv4 is enabled on this interface";
+        config false;
+        description
+          "Interface-specific parameters for the IPv4 address family.";
+        leaf forwarding {
+          type boolean;
+          description
+            "Indicates whether IPv4 packet forwarding is enabled or
+          disabled on this interface.";
+        }
+
+        leaf mtu {
+          type uint16 {
+            range "68..max";
+          }
+          units "octets";
+          description
+            "The size, in octets, of the largest IPv4 packet that the
+          interface will send and receive.";
+          reference
+            "RFC 791: Internet Protocol";
+
+        }
+
+        list address {
+          key "ip";
+          description
+            "The list of IPv4 addresses on the interface.";
+          leaf ip {
+            type inet:ipv4-address-no-zone;
+            description
+              "The IPv4 address on the interface.";
+          }
+
+          choice subnet {
+            description
+              "The subnet can be specified as a prefix-length, or,
+            if the server supports non-contiguous netmasks, as
+            a netmask.";
+            leaf prefix-length {
+              type uint8 {
+                range "0..32";
+              }
+              description
+                "The length of the subnet prefix.";
+            }
+            leaf netmask {
+              if-feature ipv4-non-contiguous-netmasks;
+              type yang:dotted-quad;
+              description
+                "The subnet specified as a netmask.";
+            }
+          }  // choice subnet
+
+          leaf origin {
+            type ip-address-origin;
+            description
+              "The origin of this address.";
+          }
+        }  // list address
+
+        list neighbor {
+          key "ip";
+          description
+            "A list of mappings from IPv4 addresses to
+          link-layer addresses.
+
+          This list represents the ARP Cache.";
+          reference
+            "RFC 826: An Ethernet Address Resolution Protocol";
+
+          leaf ip {
+            type inet:ipv4-address-no-zone;
+            description
+              "The IPv4 address of the neighbor node.";
+          }
+
+          leaf link-layer-address {
+            type yang:phys-address;
+            description
+              "The link-layer address of the neighbor node.";
+          }
+
+          leaf origin {
+            type neighbor-origin;
+            description
+              "The origin of this neighbor entry.";
+          }
+        }  // list neighbor
+      }  // container ipv4
+
+      container ipv6 {
+        presence
+          "Present if IPv6 is enabled on this interface";
+        config false;
+        description
+          "Parameters for the IPv6 address family.";
+        leaf forwarding {
+          type boolean;
+          default 'false';
+          description
+            "Indicates whether IPv6 packet forwarding is enabled or
+          disabled on this interface.";
+          reference
+            "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
+                  Section 6.2.1, IsRouter";
+
+        }
+
+        leaf mtu {
+          type uint32 {
+            range "1280..max";
+          }
+          units "octets";
+          description
+            "The size, in octets, of the largest IPv6 packet that the
+          interface will send and receive.";
+          reference
+            "RFC 2460: Internet Protocol, Version 6 (IPv6) Specification
+                  Section 5";
+
+        }
+
+        list address {
+          key "ip";
+          description
+            "The list of IPv6 addresses on the interface.";
+          leaf ip {
+            type inet:ipv6-address-no-zone;
+            description
+              "The IPv6 address on the interface.";
+          }
+
+          leaf prefix-length {
+            type uint8 {
+              range "0..128";
+            }
+            mandatory true;
+            description
+              "The length of the subnet prefix.";
+          }
+
+          leaf origin {
+            type ip-address-origin;
+            description
+              "The origin of this address.";
+          }
+
+          leaf status {
+            type enumeration {
+              enum "preferred" {
+                value 0;
+                description
+                  "This is a valid address that can appear as the
+                destination or source address of a packet.";
+              }
+              enum "deprecated" {
+                value 1;
+                description
+                  "This is a valid but deprecated address that should
+                no longer be used as a source address in new
+                communications, but packets addressed to such an
+                address are processed as expected.";
+              }
+              enum "invalid" {
+                value 2;
+                description
+                  "This isn't a valid address, and it shouldn't appear
+                as the destination or source address of a packet.";
+              }
+              enum "inaccessible" {
+                value 3;
+                description
+                  "The address is not accessible because the interface
+                to which this address is assigned is not
+                operational.";
+              }
+              enum "unknown" {
+                value 4;
+                description
+                  "The status cannot be determined for some reason.";
+              }
+              enum "tentative" {
+                value 5;
+                description
+                  "The uniqueness of the address on the link is being
+                verified.  Addresses in this state should not be
+                used for general communication and should only be
+                used to determine the uniqueness of the address.";
+              }
+              enum "duplicate" {
+                value 6;
+                description
+                  "The address has been determined to be non-unique on
+                the link and so must not be used.";
+              }
+              enum "optimistic" {
+                value 7;
+                description
+                  "The address is available for use, subject to
+                restrictions, while its uniqueness on a link is
+                being verified.";
+              }
+            }
+            description
+              "The status of an address.  Most of the states correspond
+            to states from the IPv6 Stateless Address
+            Autoconfiguration protocol.";
+            reference
+              "RFC 4293: Management Information Base for the
+                  Internet Protocol (IP)
+                  - IpAddressStatusTC
+               RFC 4862: IPv6 Stateless Address Autoconfiguration";
+
+          }
+        }  // list address
+
+        list neighbor {
+          key "ip";
+          description
+            "A list of mappings from IPv6 addresses to
+          link-layer addresses.
+
+          This list represents the Neighbor Cache.";
+          reference
+            "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)";
+
+          leaf ip {
+            type inet:ipv6-address-no-zone;
+            description
+              "The IPv6 address of the neighbor node.";
+          }
+
+          leaf link-layer-address {
+            type yang:phys-address;
+            description
+              "The link-layer address of the neighbor node.";
+          }
+
+          leaf origin {
+            type neighbor-origin;
+            description
+              "The origin of this neighbor entry.";
+          }
+
+          leaf is-router {
+            type empty;
+            description
+              "Indicates that the neighbor node acts as a router.";
+          }
+
+          leaf state {
+            type enumeration {
+              enum "incomplete" {
+                value 0;
+                description
+                  "Address resolution is in progress, and the link-layer
+                address of the neighbor has not yet been
+                determined.";
+              }
+              enum "reachable" {
+                value 1;
+                description
+                  "Roughly speaking, the neighbor is known to have been
+                reachable recently (within tens of seconds ago).";
+              }
+              enum "stale" {
+                value 2;
+                description
+                  "The neighbor is no longer known to be reachable, but
+                until traffic is sent to the neighbor no attempt
+                should be made to verify its reachability.";
+              }
+              enum "delay" {
+                value 3;
+                description
+                  "The neighbor is no longer known to be reachable, and
+                traffic has recently been sent to the neighbor.
+                Rather than probe the neighbor immediately, however,
+                delay sending probes for a short while in order to
+                give upper-layer protocols a chance to provide
+                reachability confirmation.";
+              }
+              enum "probe" {
+                value 4;
+                description
+                  "The neighbor is no longer known to be reachable, and
+                unicast Neighbor Solicitation probes are being sent
+                to verify reachability.";
+              }
+            }
+            description
+              "The Neighbor Unreachability Detection state of this
+            entry.";
+            reference
+              "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
+                  Section 7.3.2";
+
+          }
+        }  // list neighbor
+      }  // container ipv6
+    }
+  }  // module ietf-ip
diff --git a/utils/sysrepo-plugins/yang/ietf/ietf-yang-types@2013-07-15.yang b/utils/sysrepo-plugins/yang/ietf/ietf-yang-types@2013-07-15.yang
new file mode 100644
index 000000000..ee58fa3ab
--- /dev/null
+++ b/utils/sysrepo-plugins/yang/ietf/ietf-yang-types@2013-07-15.yang
@@ -0,0 +1,474 @@
+module ietf-yang-types {
+
+  namespace "urn:ietf:params:xml:ns:yang:ietf-yang-types";
+  prefix "yang";
+
+  organization
+   "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
+
+  contact
+   "WG Web:   <http://tools.ietf.org/wg/netmod/>
+    WG List:  <mailto:netmod@ietf.org>
+
+    WG Chair: David Kessens
+              <mailto:david.kessens@nsn.com>
+
+    WG Chair: Juergen Schoenwaelder
+              <mailto:j.schoenwaelder@jacobs-university.de>
+
+    Editor:   Juergen Schoenwaelder
+              <mailto:j.schoenwaelder@jacobs-university.de>";
+
+  description
+   "This module contains a collection of generally useful derived
+    YANG data types.
+
+    Copyright (c) 2013 IETF Trust and the persons identified as
+    authors of the code.  All rights reserved.
+
+    Redistribution and use in source and binary forms, with or
+    without modification, is permitted pursuant to, and subject
+    to the license terms contained in, the Simplified BSD License
+    set forth in Section 4.c of the IETF Trust's Legal Provisions
+    Relating to IETF Documents
+    (http://trustee.ietf.org/license-info).
+
+    This version of this YANG module is part of RFC 6991; see
+    the RFC itself for full legal notices.";
+
+  revision 2013-07-15 {
+    description
+     "This revision adds the following new data types:
+      - yang-identifier
+      - hex-string
+      - uuid
+      - dotted-quad";
+    reference
+     "RFC 6991: Common YANG Data Types";
+  }
+
+  revision 2010-09-24 {
+    description
+     "Initial revision.";
+    reference
+     "RFC 6021: Common YANG Data Types";
+  }
+
+  /*** collection of counter and gauge types ***/
+
+  typedef counter32 {
+    type uint32;
+    description
+     "The counter32 type represents a non-negative integer
+      that monotonically increases until it reaches a
+      maximum value of 2^32-1 (4294967295 decimal), when it
+      wraps around and starts increasing again from zero.
+
+      Counters have no defined 'initial' value, and thus, a
+      single value of a counter has (in general) no information
+      content.  Discontinuities in the monotonically increasing
+      value normally occur at re-initialization of the
+      management system, and at other times as specified in the
+      description of a schema node using this type.  If such
+      other times can occur, for example, the creation of
+      a schema node of type counter32 at times other than
+      re-initialization, then a corresponding schema node
+      should be defined, with an appropriate type, to indicate
+      the last discontinuity.
+
+      The counter32 type should not be used for configuration
+      schema nodes.  A default statement SHOULD NOT be used in
+      combination with the type counter32.
+
+      In the value set and its semantics, this type is equivalent
+      to the Counter32 type of the SMIv2.";
+    reference
+     "RFC 2578: Structure of Management Information Version 2
+                (SMIv2)";
+  }
+
+  typedef zero-based-counter32 {
+    type yang:counter32;
+    default "0";
+    description
+     "The zero-based-counter32 type represents a counter32
+      that has the defined 'initial' value zero.
+
+      A schema node of this type will be set to zero (0) on creation
+      and will thereafter increase monotonically until it reaches
+      a maximum value of 2^32-1 (4294967295 decimal), when it
+      wraps around and starts increasing again from zero.
+
+      Provided that an application discovers a new schema node
+      of this type within the minimum time to wrap, it can use the
+      'initial' value as a delta.  It is important for a management
+      station to be aware of this minimum time and the actual time
+      between polls, and to discard data if the actual time is too
+      long or there is no defined minimum time.
+
+      In the value set and its semantics, this type is equivalent
+      to the ZeroBasedCounter32 textual convention of the SMIv2.";
+    reference
+      "RFC 4502: Remote Network Monitoring Management Information
+                 Base Version 2";
+  }
+
+  typedef counter64 {
+    type uint64;
+    description
+     "The counter64 type represents a non-negative integer
+      that monotonically increases until it reaches a
+      maximum value of 2^64-1 (18446744073709551615 decimal),
+      when it wraps around and starts increasing again from zero.
+
+      Counters have no defined 'initial' value, and thus, a
+      single value of a counter has (in general) no information
+      content.  Discontinuities in the monotonically increasing
+      value normally occur at re-initialization of the
+      management system, and at other times as specified in the
+      description of a schema node using this type.  If such
+      other times can occur, for example, the creation of
+      a schema node of type counter64 at times other than
+      re-initialization, then a corresponding schema node
+      should be defined, with an appropriate type, to indicate
+      the last discontinuity.
+
+      The counter64 type should not be used for configuration
+      schema nodes.  A default statement SHOULD NOT be used in
+      combination with the type counter64.
+
+      In the value set and its semantics, this type is equivalent
+      to the Counter64 type of the SMIv2.";
+    reference
+     "RFC 2578: Structure of Management Information Version 2
+                (SMIv2)";
+  }
+
+  typedef zero-based-counter64 {
+    type yang:counter64;
+    default "0";
+    description
+     "The zero-based-counter64 type represents a counter64 that
+      has the defined 'initial' value zero.
+
+      A schema node of this type will be set to zero (0) on creation
+      and will thereafter increase monotonically until it reaches
+      a maximum value of 2^64-1 (18446744073709551615 decimal),
+      when it wraps around and starts increasing again from zero.
+
+      Provided that an application discovers a new schema node
+      of this type within the minimum time to wrap, it can use the
+      'initial' value as a delta.  It is important for a management
+      station to be aware of this minimum time and the actual time
+      between polls, and to discard data if the actual time is too
+      long or there is no defined minimum time.
+
+      In the value set and its semantics, this type is equivalent
+      to the ZeroBasedCounter64 textual convention of the SMIv2.";
+    reference
+     "RFC 2856: Textual Conventions for Additional High Capacity
+                Data Types";
+  }
+
+  typedef gauge32 {
+    type uint32;
+    description
+     "The gauge32 type represents a non-negative integer, which
+      may increase or decrease, but shall never exceed a maximum
+      value, nor fall below a minimum value.  The maximum value
+      cannot be greater than 2^32-1 (4294967295 decimal), and
+      the minimum value cannot be smaller than 0.  The value of
+      a gauge32 has its maximum value whenever the information
+      being modeled is greater than or equal to its maximum
+      value, and has its minimum value whenever the information
+      being modeled is smaller than or equal to its minimum value.
+      If the information being modeled subsequently decreases
+      below (increases above) the maximum (minimum) value, the
+      gauge32 also decreases (increases).
+
+      In the value set and its semantics, this type is equivalent
+      to the Gauge32 type of the SMIv2.";
+    reference
+     "RFC 2578: Structure of Management Information Version 2
+                (SMIv2)";
+  }
+
+  typedef gauge64 {
+    type uint64;
+    description
+     "The gauge64 type represents a non-negative integer, which
+      may increase or decrease, but shall never exceed a maximum
+      value, nor fall below a minimum value.  The maximum value
+      cannot be greater than 2^64-1 (18446744073709551615), and
+      the minimum value cannot be smaller than 0.  The value of
+      a gauge64 has its maximum value whenever the information
+      being modeled is greater than or equal to its maximum
+      value, and has its minimum value whenever the information
+      being modeled is smaller than or equal to its minimum value.
+      If the information being modeled subsequently decreases
+      below (increases above) the maximum (minimum) value, the
+      gauge64 also decreases (increases).
+
+      In the value set and its semantics, this type is equivalent
+      to the CounterBasedGauge64 SMIv2 textual convention defined
+      in RFC 2856";
+    reference
+     "RFC 2856: Textual Conventions for Additional High Capacity
+                Data Types";
+  }
+
+  /*** collection of identifier-related types ***/
+
+  typedef object-identifier {
+    type string {
+      pattern '(([0-1](\.[1-3]?[0-9]))|(2\.(0|([1-9]\d*))))'
+            + '(\.(0|([1-9]\d*)))*';
+    }
+    description
+     "The object-identifier type represents administratively
+      assigned names in a registration-hierarchical-name tree.
+
+      Values of this type are denoted as a sequence of numerical
+      non-negative sub-identifier values.  Each sub-identifier
+      value MUST NOT exceed 2^32-1 (4294967295).  Sub-identifiers
+      are separated by single dots and without any intermediate
+      whitespace.
+
+      The ASN.1 standard restricts the value space of the first
+      sub-identifier to 0, 1, or 2.  Furthermore, the value space
+      of the second sub-identifier is restricted to the range
+      0 to 39 if the first sub-identifier is 0 or 1.  Finally,
+      the ASN.1 standard requires that an object identifier
+      has always at least two sub-identifiers.  The pattern
+      captures these restrictions.
+
+      Although the number of sub-identifiers is not limited,
+      module designers should realize that there may be
+      implementations that stick with the SMIv2 limit of 128
+      sub-identifiers.
+
+      This type is a superset of the SMIv2 OBJECT IDENTIFIER type
+      since it is not restricted to 128 sub-identifiers.  Hence,
+      this type SHOULD NOT be used to represent the SMIv2 OBJECT
+      IDENTIFIER type; the object-identifier-128 type SHOULD be
+      used instead.";
+    reference
+     "ISO9834-1: Information technology -- Open Systems
+      Interconnection -- Procedures for the operation of OSI
+      Registration Authorities: General procedures and top
+      arcs of the ASN.1 Object Identifier tree";
+  }
+
+  typedef object-identifier-128 {
+    type object-identifier {
+      pattern '\d*(\.\d*){1,127}';
+    }
+    description
+     "This type represents object-identifiers restricted to 128
+      sub-identifiers.
+
+      In the value set and its semantics, this type is equivalent
+      to the OBJECT IDENTIFIER type of the SMIv2.";
+    reference
+     "RFC 2578: Structure of Management Information Version 2
+                (SMIv2)";
+  }
+
+  typedef yang-identifier {
+    type string {
+      length "1..max";
+      pattern '[a-zA-Z_][a-zA-Z0-9\-_.]*';
+      pattern '.|..|[^xX].*|.[^mM].*|..[^lL].*';
+    }
+    description
+      "A YANG identifier string as defined by the 'identifier'
+       rule in Section 12 of RFC 6020.  An identifier must
+       start with an alphabetic character or an underscore
+       followed by an arbitrary sequence of alphabetic or
+       numeric characters, underscores, hyphens, or dots.
+
+       A YANG identifier MUST NOT start with any possible
+       combination of the lowercase or uppercase character
+       sequence 'xml'.";
+    reference
+      "RFC 6020: YANG - A Data Modeling Language for the Network
+                 Configuration Protocol (NETCONF)";
+  }
+
+  /*** collection of types related to date and time***/
+
+  typedef date-and-time {
+    type string {
+      pattern '\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d+)?'
+            + '(Z|[\+\-]\d{2}:\d{2})';
+    }
+    description
+     "The date-and-time type is a profile of the ISO 8601
+      standard for representation of dates and times using the
+      Gregorian calendar.  The profile is defined by the
+      date-time production in Section 5.6 of RFC 3339.
+
+      The date-and-time type is compatible with the dateTime XML
+      schema type with the following notable exceptions:
+
+      (a) The date-and-time type does not allow negative years.
+
+      (b) The date-and-time time-offset -00:00 indicates an unknown
+          time zone (see RFC 3339) while -00:00 and +00:00 and Z
+          all represent the same time zone in dateTime.
+
+      (c) The canonical format (see below) of data-and-time values
+          differs from the canonical format used by the dateTime XML
+          schema type, which requires all times to be in UTC using
+          the time-offset 'Z'.
+
+      This type is not equivalent to the DateAndTime textual
+      convention of the SMIv2 since RFC 3339 uses a different
+      separator between full-date and full-time and provides
+      higher resolution of time-secfrac.
+
+      The canonical format for date-and-time values with a known time
+      zone uses a numeric time zone offset that is calculated using
+      the device's configured known offset to UTC time.  A change of
+      the device's offset to UTC time will cause date-and-time values
+      to change accordingly.  Such changes might happen periodically
+      in case a server follows automatically daylight saving time
+      (DST) time zone offset changes.  The canonical format for
+      date-and-time values with an unknown time zone (usually
+      referring to the notion of local time) uses the time-offset
+      -00:00.";
+    reference
+     "RFC 3339: Date and Time on the Internet: Timestamps
+      RFC 2579: Textual Conventions for SMIv2
+      XSD-TYPES: XML Schema Part 2: Datatypes Second Edition";
+  }
+
+  typedef timeticks {
+    type uint32;
+    description
+     "The timeticks type represents a non-negative integer that
+      represents the time, modulo 2^32 (4294967296 decimal), in
+      hundredths of a second between two epochs.  When a schema
+      node is defined that uses this type, the description of
+      the schema node identifies both of the reference epochs.
+
+      In the value set and its semantics, this type is equivalent
+      to the TimeTicks type of the SMIv2.";
+    reference
+     "RFC 2578: Structure of Management Information Version 2
+                (SMIv2)";
+  }
+
+  typedef timestamp {
+    type yang:timeticks;
+    description
+     "The timestamp type represents the value of an associated
+      timeticks schema node at which a specific occurrence
+      happened.  The specific occurrence must be defined in the
+      description of any schema node defined using this type.  When
+      the specific occurrence occurred prior to the last time the
+      associated timeticks attribute was zero, then the timestamp
+      value is zero.  Note that this requires all timestamp values
+      to be reset to zero when the value of the associated timeticks
+      attribute reaches 497+ days and wraps around to zero.
+
+      The associated timeticks schema node must be specified
+      in the description of any schema node using this type.
+
+      In the value set and its semantics, this type is equivalent
+      to the TimeStamp textual convention of the SMIv2.";
+    reference
+     "RFC 2579: Textual Conventions for SMIv2";
+  }
+
+  /*** collection of generic address types ***/
+
+  typedef phys-address {
+    type string {
+      pattern '([0-9a-fA-F]{2}(:[0-9a-fA-F]{2})*)?';
+    }
+
+    description
+     "Represents media- or physical-level addresses represented
+      as a sequence octets, each octet represented by two hexadecimal
+      numbers.  Octets are separated by colons.  The canonical
+      representation uses lowercase characters.
+
+      In the value set and its semantics, this type is equivalent
+      to the PhysAddress textual convention of the SMIv2.";
+    reference
+     "RFC 2579: Textual Conventions for SMIv2";
+  }
+
+  typedef mac-address {
+    type string {
+      pattern '[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){5}';
+    }
+    description
+     "The mac-address type represents an IEEE 802 MAC address.
+      The canonical representation uses lowercase characters.
+
+      In the value set and its semantics, this type is equivalent
+      to the MacAddress textual convention of the SMIv2.";
+    reference
+     "IEEE 802: IEEE Standard for Local and Metropolitan Area
+                Networks: Overview and Architecture
+      RFC 2579: Textual Conventions for SMIv2";
+  }
+
+  /*** collection of XML-specific types ***/
+
+  typedef xpath1.0 {
+    type string;
+    description
+     "This type represents an XPATH 1.0 expression.
+
+      When a schema node is defined that uses this type, the
+      description of the schema node MUST specify the XPath
+      context in which the XPath expression is evaluated.";
+    reference
+     "XPATH: XML Path Language (XPath) Version 1.0";
+  }
+
+  /*** collection of string types ***/
+
+  typedef hex-string {
+    type string {
+      pattern '([0-9a-fA-F]{2}(:[0-9a-fA-F]{2})*)?';
+    }
+    description
+     "A hexadecimal string with octets represented as hex digits
+      separated by colons.  The canonical representation uses
+      lowercase characters.";
+  }
+
+  typedef uuid {
+    type string {
+      pattern '[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-'
+            + '[0-9a-fA-F]{4}-[0-9a-fA-F]{12}';
+    }
+    description
+     "A Universally Unique IDentifier in the string representation
+      defined in RFC 4122.  The canonical representation uses
+      lowercase characters.
+
+      The following is an example of a UUID in string representation:
+      f81d4fae-7dec-11d0-a765-00a0c91e6bf6
+      ";
+    reference
+     "RFC 4122: A Universally Unique IDentifier (UUID) URN
+                Namespace";
+  }
+
+  typedef dotted-quad {
+    type string {
+      pattern
+        '(([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}'
+      + '([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])';
+    }
+    description
+      "An unsigned 32-bit number expressed in the dotted-quad
+       notation, i.e., four octets written as decimal numbers
+       and separated with the '.' (full stop) character.";
+  }
+}
-- 
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