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-module openconfig-qos-types {
-
- yang-version "1";
-
- // namespace
- namespace "http://openconfig.net/yang/qos-types";
-
- prefix "oc-qos-types";
-
- // import some basic types
- import openconfig-extensions { prefix oc-ext; }
-
-
- // meta
- organization "OpenConfig working group";
-
- contact
- "OpenConfig working group
- www.openconfig.net";
-
- description
- "This module defines types and identities used in OpenConfig
- models related to quality-of-service (QoS)";
-
- oc-ext:openconfig-version "0.2.0";
-
- revision "2016-12-16" {
- description
- "Fix incorrect interface-ref placement";
- reference "0.2.0";
- }
-
- revision "2016-08-08" {
- description
- "Initial revision";
- reference "0.1.0";
- }
-
- // extension statements
-
- // feature statements
-
- // identity statements
-
- identity QOS_QUEUE_TYPE {
- description
- "Base identity for supported queue types, primarily
- defined by their drop behavior / strategy";
- }
-
- identity DROP_TAIL {
- base QOS_QUEUE_TYPE;
- description
- "When the queue is filled to capacity, newly arriving packets
- are discarded until there is room in the queue to accept new
- traffic. Packets are not differentiated, i.e., all packets
- are treated identically.";
- }
-
- identity RED {
- base QOS_QUEUE_TYPE;
- description
- "Queue management based on Random Early Detection (RED). RED
- drops packets based on a drop probability that is based on the
- average queue length, and settings of mininum and maximum
- queue thresholds. On ECN-capable devices, packets may be
- marked instead of dropped to signal congestion to the
- sender.";
- reference
- "IETF RFC 2309 - Recommendations on Queue Management and
- Congestion Avoidance in the Internet
- IETF RFC 7567 - IETF Recommendations Regarding Active Queue
- Management";
- }
-
- identity WRED {
- base QOS_QUEUE_TYPE;
- description
- "Queue management based on a variant of RED in which the packet
- drop probability is based on its traffic class.";
- }
-
- identity QOS_SCHEDULER_TYPE {
- description
- "Base identity to describe supported QoS scheduler types.";
- }
-
- identity ONE_RATE_TWO_COLOR {
- base QOS_SCHEDULER_TYPE;
- description
- "Token bucket scheduler with a single rate (committed information
- rate) and two colors (conforming and exceeding). The scheduler
- behavior is governed by two parameters, the CIR which
- determines the rate of token fill (bps) and the committed
- burst size (depth of the token bucket in bytes).";
- }
-
- identity TWO_RATE_THREE_COLOR {
- base QOS_SCHEDULER_TYPE;
- description
- "Token bucket scheduler with two buckets, one filled at the
- committed information rate (CIR) in bps, and the second filled
- at the peak information rate (PIR) in bps when the first
- bucket is full. The first bucket depth is
- the committed burst size (bytes), and the second is the
- excess burst size (bytes). Traffic is categorized in three
- colors as follows: traffic that falls within the
- the CIR is conforming, traffic that is greater than the CIR
- but less than the PIR is exceeding, and traffic that is
- greater than PIR is violating.";
- }
-
- // typedef statements
-
- typedef queue-behavior {
- type enumeration {
- enum SHAPE {
- description
- "Packets that exceed the CIR should be queued into a
- buffer. The depth of the buffer is specified to be
- max-queue-depth-bytes or max-queue-depth-packets.
- Packets are subsequently scheduled from this queue
- to the specified output. Only packets that overflow
- the buffer have the exceed action applied to them.";
- }
- enum POLICE {
- description
- "Packets that exceed the CIR should be immediately
- treated as exceeding the defined rate of the scheduler
- and have the exceed action applied to them.";
- }
- }
- description
- "Type definition for different queueing behaviours that
- are available to a scheduler.";
- }
-
- // grouping statements
-
- // data definition statements
-
- // augment statements
-
- // rpc statements
-
- // notification statements
-
-}