Add vpp loadbalancer l3dsr/nat4 mode test suites

Change-Id: I03603108fe7128fb4bde4abddb6a0959dd5b5c73
Signed-off-by: haiyanx1.zhang <haiyanx1.zhang@intel.com>

6 files changed, 413 insertions, 17 deletions

diff --git a/docs/tag_documentation.rst b/docs/tag_documentation.rst
index 61b97d30b3..fd5b6c9d6e 100644
--- a/docs/tag_documentation.rst
+++ b/docs/tag_documentation.rst
@@ -408,9 +408,17 @@ Forwarding Mode Tags
 
     VPP IPv6 routed forwarding.
 
-.. topic:: LOADBALANCER
+.. topic:: LOADBALANCER_MAGLEV
 
-    VPP Load balancer.
+    VPP Load balancer maglev mode.
+
+.. topic:: LOADBALANCER_L3DSR
+
+    VPP Load balancer l3dsr mode.
+
+.. topic:: LOADBALANCER_NAT4
+
+    VPP Load balancer nat4 mode.
 
 Underlay Tags
 -------------
diff --git a/resources/libraries/python/LoadBalancerUtil.py b/resources/libraries/python/LoadBalancerUtil.py
index 26bf965c39..77f6412973 100644
--- a/resources/libraries/python/LoadBalancerUtil.py
+++ b/resources/libraries/python/LoadBalancerUtil.py
@@ -15,7 +15,7 @@
 
 from socket import htonl
 from ipaddress import ip_address
-from resources.libraries.python.topology import NodeType
+from resources.libraries.python.topology import NodeType, Topology
 from resources.libraries.python.PapiExecutor import PapiSocketExecutor
 
 class LoadBalancerUtil(object):
@@ -174,3 +174,34 @@ class LoadBalancerUtil(object):
         else:
             raise ValueError('Node {host} has unknown NodeType: "{type}"'
                              .format(host=node['host'], type=node['type']))
+
+    @staticmethod
+    def vpp_lb_add_del_intf_nat4(node, **kwargs):
+        """Enable/disable NAT4 feature on the interface.
+
+        :param node: Node where the interface is.
+        :param kwargs: Optional key-value arguments:
+
+            is_add: true if add, false if delete. (bool)
+            interface: software index of the interface. (int)
+
+        :type node: dict
+        :type kwargs: dict
+        :returns: Nothing.
+        :raises ValueError: If the node has an unknown node type.
+        """
+        if node['type'] == NodeType.DUT:
+            cmd = 'lb_add_del_intf_nat4'
+            err_msg = 'Failed to add interface nat4 on host {host}'.format(
+                host=node['host'])
+
+            is_add = kwargs.pop('is_add', True)
+            interface = kwargs.pop('interface', 0)
+            sw_if_index = Topology.get_interface_sw_index(node, interface)
+            args = dict(is_add=is_add, sw_if_index=sw_if_index)
+
+            with PapiSocketExecutor(node) as papi_exec:
+                papi_exec.add(cmd, **args).get_reply(err_msg)
+        else:
+            raise ValueError('Node {host} has unknown NodeType: "{type}"'
+                             .format(host=node['host'], type=node['type']))
diff --git a/resources/libraries/robot/lb/load_balancer.robot b/resources/libraries/robot/lb/load_balancer.robot
index 4dc66447d2..42cac6ae2e 100644
--- a/resources/libraries/robot/lb/load_balancer.robot
+++ b/resources/libraries/robot/lb/load_balancer.robot
@@ -45,20 +45,116 @@
 | | VPP Interface Set IP Address | ${dut1} | ${dut1_if2}
 | | ... | 192.168.60.73 | 24
 | | ...
-| | VPP Add IP Neighbor | ${dut1} | ${dut1_if2} | 192.168.60.74 | ${tg_if2_mac}
-| | VPP Add IP Neighbor | ${dut1} | ${dut1_if2} | 192.168.60.75 | ${tg_if2_mac}
-| | VPP Add IP Neighbor | ${dut1} | ${dut1_if2} | 192.168.60.76 | ${tg_if2_mac}
-| | VPP Add IP Neighbor | ${dut1} | ${dut1_if2} | 192.168.60.77 | ${tg_if2_mac}
-| | VPP Add IP Neighbor | ${dut1} | ${dut1_if2} | 192.168.60.78 | ${tg_if2_mac}
-| | VPP Add IP Neighbor | ${dut1} | ${dut1_if2} | 192.168.60.79 | ${tg_if2_mac}
+| | Add Ip Neighbors | ${dut1} | ${dut1_if2} | 192.168.60 | ${tg_if2_mac}
 | | ...
 | | Vpp Route Add | ${dut1} | 192.168.60.0 | 24 | interface=${dut1_if2}
 | | ...
 | | Vpp Lb Conf | ${dut1} | ip4_src_addr=192.168.60.73 | buckets_per_core=${128}
-| | Vpp Lb Add Del Vip | ${dut1} | vip_addr=90.1.2.1 | encap=${0} | new_len=${1024}
-| | Vpp Lb Add Del As | ${dut1} | vip_addr=90.1.2.1 | as_addr=192.168.60.74
-| | Vpp Lb Add Del As | ${dut1} | vip_addr=90.1.2.1 | as_addr=192.168.60.75
-| | Vpp Lb Add Del As | ${dut1} | vip_addr=90.1.2.1 | as_addr=192.168.60.76
-| | Vpp Lb Add Del As | ${dut1} | vip_addr=90.1.2.1 | as_addr=192.168.60.77
-| | Vpp Lb Add Del As | ${dut1} | vip_addr=90.1.2.1 | as_addr=192.168.60.78
-| | Vpp Lb Add Del As | ${dut1} | vip_addr=90.1.2.1 | as_addr=192.168.60.79
+| | Vpp Lb Add Del Vip | ${dut1} | vip_addr=90.1.2.1 | encap=${0}
+| | ... | new_len=${1024}
+| | Add Lb As Addresses | ${dut1} | 90.1.2.1 | 192.168.60
+
+| Initialize loadbalancer l3dsr
+| | [Documentation]
+| | ... | Set UP state on VPP interfaces in path on nodes in 2-node
+| | ... | circular topology. Get the interface MAC addresses and setup ARP on
+| | ... | all VPP interfaces. Setup IPv4 addresses with /24 prefix on DUT-TG
+| | ... | links.
+| | ...
+| | Set interfaces in path up
+| | ...
+| | ${fib_table}= | Set Variable | ${0}
+| | Add Fib Table | ${dut1} | ${fib_table}
+| | Assign Interface To Fib Table | ${dut1} | ${dut1_if1} | ${fib_table}
+| | Assign Interface To Fib Table | ${dut1} | ${dut1_if2} | ${fib_table}
+| | ...
+| | VPP Interface Set IP Address | ${dut1} | ${dut1_if1}
+| | ... | 192.168.50.72 | 24
+| | VPP Interface Set IP Address | ${dut1} | ${dut1_if2}
+| | ... | 192.168.60.73 | 24
+| | ...
+| | Add Ip Neighbors | ${dut1} | ${dut1_if2} | 192.168.60 | ${tg_if2_mac}
+| | ...
+| | Vpp Route Add | ${dut1} | 192.168.60.0 | 24 | interface=${dut1_if2}
+| | ...
+| | Vpp Lb Conf | ${dut1} | ip4_src_addr=192.168.60.73 | buckets_per_core=${128}
+| | Vpp Lb Add Del Vip | ${dut1} | vip_addr=90.1.2.1 | encap=${2} | dscp=${7}
+| | ... | new_len=${1024}
+| | Add Lb As Addresses | ${dut1} | 90.1.2.1 | 192.168.60
+
+| Initialize loadbalancer nat4
+| | [Documentation]
+| | ... | Set UP state on VPP interfaces in path on nodes in 2-node
+| | ... | circular topology. Get the interface MAC addresses and setup ARP on
+| | ... | all VPP interfaces. Setup IPv4 addresses with /24 prefix on DUT-TG
+| | ... | links.
+| | ...
+| | Set interfaces in path up
+| | ...
+| | ${fib_table}= | Set Variable | ${0}
+| | Add Fib Table | ${dut1} | ${fib_table}
+| | Assign Interface To Fib Table | ${dut1} | ${dut1_if1} | ${fib_table}
+| | Assign Interface To Fib Table | ${dut1} | ${dut1_if2} | ${fib_table}
+| | ...
+| | VPP Interface Set IP Address | ${dut1} | ${dut1_if1}
+| | ... | 192.168.50.72 | 24
+| | VPP Interface Set IP Address | ${dut1} | ${dut1_if2}
+| | ... | 192.168.60.73 | 24
+| | ...
+| | Add Ip Neighbors | ${dut1} | ${dut1_if1} | 192.168.50 | ${tg_if1_mac}
+| | Add Ip Neighbors | ${dut1} | ${dut1_if2} | 192.168.60 | ${tg_if2_mac}
+| | ...
+| | Vpp Route Add | ${dut1} | 192.168.50.0 | 24 | interface=${dut1_if1}
+| | Vpp Route Add | ${dut1} | 192.168.60.0 | 24 | interface=${dut1_if2}
+| | ...
+| | Vpp Lb Conf | ${dut1} | ip4_src_addr=192.168.60.73 | buckets_per_core=${128}
+| | Vpp Lb Add Del Vip | ${dut1} | vip_addr=90.1.2.1 | encap=${3}
+| | ... | protocol=${17} | port=${20000} | target_port=${3307} | new_len=${1024}
+| | Add Lb As Addresses
+| | ... | ${dut1} | 90.1.2.1 | 192.168.60 | protocol=${17} | port=${20000}
+| | Vpp Lb Add Del Intf Nat4 | ${dut1} | interface=${dut1_if2}
+
+| Add Ip Neighbors
+| | [Documentation] | Add IP neighbors to physical interface on DUT.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - VPP node. Type: dictionary
+| | ... | - interface - Interface key. Type: string
+| | ... | - ip_addr - IP address of the interface. Type: string
+| | ... | - mac_addr - MAC address of the interface. Type: string
+| | ...
+| | ... | *Example:*
+| | ... | \| Add Ip Neighbors \| ${dut1} \| ${dut1_if1} \| 192.168.50 \
+| | ... | \| ${tg_if1_mac}
+| | ...
+| | [Arguments] | ${node} | ${interface} | ${ip_addr} | ${mac_addr}
+| | ...
+| | :FOR | ${number} | IN RANGE | 74 | 80
+| | | VPP Add IP Neighbor
+| | | ... | ${node} | ${interface} | ${ip_addr}.${number} | ${mac_addr}
+
+| Add Lb As Addresses
+| | [Documentation] | Add Lb As Addresses on Vpp node.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - VPP node. Type: dictionary
+| | ... | - vip_addr - IPv4 address to be used as source for IPv4 traffic.
+| | ... | Type: string
+| | ... | - as_addr - The application server address. Type: string
+| | ... | - protocol - tcp or udp. Type: integer
+| | ... | - port - destination port. Type: integer
+| | ... | - is_del - 1 if the VIP should be removed otherwise 0.  Type: integer
+| | ... | - is_flush - 1 if the sessions related to this AS should be flushed
+| | ... | otherwise 0. Type: integer
+| | ...
+| | ... | *Example:*
+| | ... | \| Add Lb As Addresses \| ${dut1} \| 90.1.2.1 \| 192.168.60 \
+| | ... | \| protocol=${17} \| port=${20000} \|
+| | ...
+| | [Arguments] | ${node} | ${vip_addr} | ${as_addr} | ${protocol}=${255}
+| | ... | ${port}=${0} | ${is_del}=${0} | ${is_flush}=${0}
+| | ...
+| | :FOR | ${number} | IN RANGE | 74 | 80
+| | | VPP Lb Add Del As
+| | | ... | ${node} | vip_addr=${vip_addr} | protocol=${protocol}
+| | | ... | port=${port} | as_addr=${as_addr}.${number}
diff --git a/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-l3dsr-ndrpdr.robot b/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-l3dsr-ndrpdr.robot
new file mode 100644
index 0000000000..16e6e6011c
--- /dev/null
+++ b/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-l3dsr-ndrpdr.robot
@@ -0,0 +1,131 @@
+# Copyright (c) 2019 Intel and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+*** Settings ***
+| Resource | resources/libraries/robot/shared/default.robot
+| ...
+| Force Tags | 2_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | NDRPDR
+| ... | NIC_Intel-X710 | ETH | IP4 | LOADBALANCER_L3DSR | DRV_VFIO_PCI
+| ...
+| Suite Setup | Setup suite single link | performance
+| Suite Teardown | Tear down suite | performance
+| Test Setup | Setup test
+| Test Teardown | Tear down test | performance
+| ...
+| Test Template | Local Template
+| ...
+| Documentation | *RFC2544: Pkt throughput loadbalancer l3dsr test cases*
+| ...
+| ... | *[Top] Network Topologies:* TG-DUT1-TG 2-node circular topology\
+| ... | with single links between nodes.
+| ... | *[Enc] Packet Encapsulations:* Eth-IPv4-UDP for LoadBalancer l3dsr.
+| ... | *[Cfg] DUT configuration:* DUT1 is configured with LoadBalancer\
+| ... | l3dsr and one static IPv4 /24 route entries. DUT1 tested with\
+| ... | ${nic_name}.
+| ... | *[Ver] TG verification:* TG finds and reports throughput NDR (Non Drop\
+| ... | Rate) with zero packet loss tolerance and throughput PDR (Partial Drop\
+| ... | Rate) with non-zero packet loss tolerance (LT) expressed in percentage\
+| ... | of packets transmitted. NDR and PDR are discovered for different\
+| ... | Ethernet L2 frame sizes using MLRsearch library.\
+| ... | Test packets are generated by TG on links to DUT. TG traffic profile\
+| ... | contains two L4 flow-groups (l3dsr use flow-group is only from TG\
+| ... | to DUT, 6 flows for flow-group) with all packets containing Ethernet\
+| ... | header, IPv4 header with IP protocol=17 and static payload. MAC\
+| ... | addresses are matching MAC addresses of the TG node interfaces.
+| ... | *[Ref] Applicable standard specifications:* RFC2544.
+
+*** Variables ***
+| @{plugins_to_enable}= | dpdk_plugin.so | lb_plugin.so
+| ${crypto_type}= | ${None}
+| ${nic_name}= | Intel-X710
+| ${nic_driver}= | vfio-pci
+| ${osi_layer}= | L3
+| ${overhead}= | ${0}
+# Traffic profile:
+| ${traffic_profile}= | trex-sl-2n-ethip4udp-lb
+
+*** Keywords ***
+| Local Template
+| | [Documentation]
+| | ... | [Cfg] DUT runs LoadBalancer l3dsr config.\
+| | ... | Each DUT uses ${phy_cores} physical core(s) for worker threads.
+| | ... | [Ver] Measure NDR and PDR values using MLRsearch algorithm.\
+| | ...
+| | ... | *Arguments:*
+| | ... | - frame_size - Framesize in Bytes in integer or string (IMIX_v4_1).
+| | ... |   Type: integer, string
+| | ... | - phy_cores - Number of physical cores. Type: integer
+| | ... | - rxq - Number of RX queues, default value: ${None}. Type: integer
+| | ...
+| | [Arguments] | ${frame_size} | ${phy_cores} | ${rxq}=${None}
+| | ...
+| | Set Test Variable | \${frame_size}
+| | ...
+| | Given Set Max Rate And Jumbo
+| | And Add worker threads to all DUTs | ${phy_cores} | ${rxq}
+| | And Pre-initialize layer driver | ${nic_driver}
+| | And Apply startup configuration on all VPP DUTs
+| | When Initialize layer driver | ${nic_driver}
+| | And Initialize layer interface
+| | And Initialize loadbalancer l3dsr
+| | Then Find NDR and PDR intervals using optimized search
+| | ... | traffic_directions=${1}
+
+*** Test Cases ***
+| tc01-64B-1c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 64B | 1C
+| | frame_size=${64} | phy_cores=${1}
+
+| tc02-64B-2c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 64B | 2C
+| | frame_size=${64} | phy_cores=${2}
+
+| tc03-64B-4c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 64B | 4C
+| | frame_size=${64} | phy_cores=${4}
+
+| tc04-1518B-1c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 1518B | 1C
+| | frame_size=${1518} | phy_cores=${1}
+
+| tc05-1518B-2c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 1518B | 2C
+| | frame_size=${1518} | phy_cores=${2}
+
+| tc06-1518B-4c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 1518B | 4C
+| | frame_size=${1518} | phy_cores=${4}
+
+| tc07-9000B-1c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 9000B | 1C
+| | frame_size=${9000} | phy_cores=${1}
+
+| tc08-9000B-2c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 9000B | 2C
+| | frame_size=${9000} | phy_cores=${2}
+
+| tc09-9000B-4c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | 9000B | 4C
+| | frame_size=${9000} | phy_cores=${4}
+
+| tc10-IMIX-1c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | IMIX | 1C
+| | frame_size=IMIX_v4_1 | phy_cores=${1}
+
+| tc11-IMIX-2c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | IMIX | 2C
+| | frame_size=IMIX_v4_1 | phy_cores=${2}
+
+| tc12-IMIX-4c-ethip4-loadbalancer-l3dsr-ndrpdr
+| | [Tags] | IMIX | 4C
+| | frame_size=IMIX_v4_1 | phy_cores=${4}
diff --git a/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-maglev-ndrpdr.robot b/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-maglev-ndrpdr.robot
index 4e26e7a188..e5d421ff86 100644
--- a/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-maglev-ndrpdr.robot
+++ b/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-maglev-ndrpdr.robot
@@ -15,7 +15,7 @@
 | Resource | resources/libraries/robot/shared/default.robot
 | ...
 | Force Tags | 2_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | NDRPDR
-| ... | NIC_Intel-X710 | ETH | IP4 | LOADBALANCER | DRV_VFIO_PCI
+| ... | NIC_Intel-X710 | ETH | IP4 | LOADBALANCER_MAGLEV | DRV_VFIO_PCI
 | ...
 | Suite Setup | Setup suite single link | performance
 | Suite Teardown | Tear down suite | performance
diff --git a/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-nat4-ndrpdr.robot b/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-nat4-ndrpdr.robot
new file mode 100644
index 0000000000..8b7bd42d4a
--- /dev/null
+++ b/tests/vpp/perf/lb/2n1l-10ge2p1x710-ethip4-loadbalancer-nat4-ndrpdr.robot
@@ -0,0 +1,130 @@
+# Copyright (c) 2019 Intel and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+*** Settings ***
+| Resource | resources/libraries/robot/shared/default.robot
+| ...
+| Force Tags | 2_NODE_SINGLE_LINK_TOPO | PERFTEST | HW_ENV | NDRPDR
+| ... | NIC_Intel-X710 | ETH | IP4 | LOADBALANCER_NAT4 | DRV_VFIO_PCI
+| ...
+| Suite Setup | Setup suite single link | performance
+| Suite Teardown | Tear down suite | performance
+| Test Setup | Setup test
+| Test Teardown | Tear down test | performance
+| ...
+| Test Template | Local Template
+| ...
+| Documentation | *RFC2544: Pkt throughput loadbalancer nat4 test cases*
+| ...
+| ... | *[Top] Network Topologies:* TG-DUT1-TG 2-node circular topology\
+| ... | with single links between nodes.
+| ... | *[Enc] Packet Encapsulations:* Eth-IPv4-UDP for LoadBalancer nat4.
+| ... | *[Cfg] DUT configuration:* DUT1 is configured with LoadBalancer\
+| ... | nat4 and two static IPv4 /24 route entries. DUT1 tested with\
+| ... | ${nic_name}.
+| ... | *[Ver] TG verification:* TG finds and reports throughput NDR (Non Drop\
+| ... | Rate) with zero packet loss tolerance and throughput PDR (Partial Drop\
+| ... | Rate) with non-zero packet loss tolerance (LT) expressed in percentage\
+| ... | of packets transmitted. NDR and PDR are discovered for different\
+| ... | Ethernet L2 frame sizes using MLRsearch library.\
+| ... | Test packets are generated by TG on links to DUTs. TG traffic profile\
+| ... | contains two L4 flow-groups (flow-group per direction, 6 flows per\
+| ... | flow-group) with all packets containing Ethernet header, IPv4 header\
+| ... | with IP protocol=17 and static payload. MAC addresses are matching MAC\
+| ... | addresses of the TG node interfaces.
+| ... | *[Ref] Applicable standard specifications:* RFC2544.
+
+*** Variables ***
+| @{plugins_to_enable}= | dpdk_plugin.so | lb_plugin.so
+| ${crypto_type}= | ${None}
+| ${nic_name}= | Intel-X710
+| ${nic_driver}= | vfio-pci
+| ${osi_layer}= | L3
+| ${overhead}= | ${0}
+# Traffic profile:
+| ${traffic_profile}= | trex-sl-2n-ethip4udp-lb
+
+*** Keywords ***
+| Local Template
+| | [Documentation]
+| | ... | [Cfg] DUT runs LoadBalancer nat4 config.\
+| | ... | Each DUT uses ${phy_cores} physical core(s) for worker threads.
+| | ... | [Ver] Measure NDR and PDR values using MLRsearch algorithm.\
+| | ...
+| | ... | *Arguments:*
+| | ... | - frame_size - Framesize in Bytes in integer or string (IMIX_v4_1).
+| | ... |   Type: integer, string
+| | ... | - phy_cores - Number of physical cores. Type: integer
+| | ... | - rxq - Number of RX queues, default value: ${None}. Type: integer
+| | ...
+| | [Arguments] | ${frame_size} | ${phy_cores} | ${rxq}=${None}
+| | ...
+| | Set Test Variable | \${frame_size}
+| | ...
+| | Given Set Max Rate And Jumbo
+| | And Add worker threads to all DUTs | ${phy_cores} | ${rxq}
+| | And Pre-initialize layer driver | ${nic_driver}
+| | And Apply startup configuration on all VPP DUTs
+| | When Initialize layer driver | ${nic_driver}
+| | And Initialize layer interface
+| | And Initialize loadbalancer nat4
+| | Then Find NDR and PDR intervals using optimized search
+
+*** Test Cases ***
+| tc01-64B-1c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 64B | 1C
+| | frame_size=${64} | phy_cores=${1}
+
+| tc02-64B-2c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 64B | 2C
+| | frame_size=${64} | phy_cores=${2}
+
+| tc03-64B-4c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 64B | 4C
+| | frame_size=${64} | phy_cores=${4}
+
+| tc04-1518B-1c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 1518B | 1C
+| | frame_size=${1518} | phy_cores=${1}
+
+| tc05-1518B-2c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 1518B | 2C
+| | frame_size=${1518} | phy_cores=${2}
+
+| tc06-1518B-4c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 1518B | 4C
+| | frame_size=${1518} | phy_cores=${4}
+
+| tc07-9000B-1c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 9000B | 1C
+| | frame_size=${9000} | phy_cores=${1}
+
+| tc08-9000B-2c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 9000B | 2C
+| | frame_size=${9000} | phy_cores=${2}
+
+| tc09-9000B-4c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | 9000B | 4C
+| | frame_size=${9000} | phy_cores=${4}
+
+| tc10-IMIX-1c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | IMIX | 1C
+| | frame_size=IMIX_v4_1 | phy_cores=${1}
+
+| tc11-IMIX-2c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | IMIX | 2C
+| | frame_size=IMIX_v4_1 | phy_cores=${2}
+
+| tc12-IMIX-4c-ethip4-loadbalancer-nat4-ndrpdr
+| | [Tags] | IMIX | 4C
+| | frame_size=IMIX_v4_1 | phy_cores=${4}