Validate long-duration device stability, agent/process health, and forwarding integrity (no traffic drops or VOQ drops) for 10 minutes following each of the two Supervisor Switchovers (SSO).

• 4_router_links.testbed

• Configure DUT AS Number: 65000
• Create two L3 VRFs representing the DCGate architecture: TRANSIT_VRF and DECAP_TE_VRF by setting /network-instances/network-instance/config/type to L3VRF.
• Configure VRF 1: TRANSIT_VRF
  • Assign Port 1 and Port 2 to TRANSIT_VRF via /network-instances/network-instance/interfaces/interface/config/id.
  • Port 1 Setup:
    • DUT IP: 192.0.2.1/30 | ATE IP: 192.0.2.2/30
    • BGP Neighbor: 192.0.2.2 | Remote AS: 65001
    • ATE Advertised Routes: 198.51.100.0/24
  • Port 2 Setup:
    • DUT IP: 192.0.2.5/30 | ATE IP: 192.0.2.6/30
    • BGP Neighbor: 192.0.2.6 | Remote AS: 65001
    • ATE Advertised Routes: 198.51.101.0/24
• Configure VRF 2: DECAP_TE_VRF
  • Assign Port 3 and Port 4 to DECAP_TE_VRF via /network-instances/network-instance/interfaces/interface/config/id.
  • Port 3 Setup:
    • DUT IP: 192.0.2.9/30 | ATE IP: 192.0.2.10/30
    • BGP Neighbor: 192.0.2.10 | Remote AS: 65002
    • ATE Advertised Routes: 198.51.102.0/24
  • Port 4 Setup:
    • DUT IP: 192.0.2.13/30 | ATE IP: 192.0.2.14/30
    • BGP Neighbor: 192.0.2.14 | Remote AS: 65002
    • ATE Advertised Routes: 198.51.103.0/24
• Configure basic egress queue management profiles representing AF4 and BE0 traffic classes and attach them to all output ports by mapping them to /qos/interfaces/interface/output/queues/queue/config/name.
• Enable BGP Graceful Restart by setting /network-instances/network-instance/protocols/protocol/bgp/global/graceful-restart/config/enabled to true, /network-instances/network-instance/protocols/protocol/bgp/global/graceful-restart/config/restart-time to 120 and configuring stale-routes-time to ensure routes survive the SSO.

• Step 1 - Start Background Traffic and Record Process State

  • Initiate continuous background traffic from ATE matching the AF4 and BE0 QoS queues throughout the duration of the test.
  • Ensure BGP has converged and traffic flows with 0 dropped packets.
  • Query /system/processes/process using gNMI Get to find the PIDs for critical hardware and routing agents (e.g. AsicResourceMgr, SandL3Ni equivalents) via /system/processes/process/state/name.
  • Record their /system/processes/process/state/start-time and /system/processes/process/state/pid.
  • Record the baseline /system/processes/process/state/memory-usage for memory leak detection.

• Step 2 - Trigger Supervisor Switchover

  • Trigger a supervisor switchover using gnoi.System.SwitchControlProcessor.
  • For 10 minutes post switchover, every 2 minutes validate that:
    • Crash Detection: Query the recorded processes and verify their /system/processes/process/state/start-time and /system/processes/process/state/pid have not changed. A changed start-time or a missing PID indicates the process crashed and restarted.
    • Memory Leak Detection: Poll /system/processes/process/state/memory-usage for the critical agents.
      • Memory usage should not keep on increasing over time when compared to the baseline.
  • Validate the supervisors are switchover ready using /components/component/state/switchover-ready
  • Trigger another supervisor switchover using gnoi.System.SwitchControlProcessor.

• Step 3 - Soak Phase

  • Continue generating traffic from the ATE for 10 minutes post-switchover.
  • For 10 minutes post switchover, every 2 minutes validate that:
    • Crash Detection: Query the recorded processes and verify their /system/processes/process/state/start-time and /system/processes/process/state/pid have not changed. A changed start-time or a missing PID indicates the process crashed and restarted.
    • Memory Leak Detection: Poll /system/processes/process/state/memory-usage for the critical agents.
      • Memory usage should not keep on increasing over time when compared to the baseline.
  • Validate the supervisors are switchover ready using /components/component/state/switchover-ready

• Step 4 - Validation with pass/fail criteria

  • Validate that traffic loss is 0% during the entire duration of the test.
  • Verify that QoS queue drop telemetry (/qos/interfaces/interface/output/queues/queue/state/dropped-pkts) remains 0.

{
  "network-instances": {
    "network-instance": [
      {
        "name": "TRANSIT_VRF",
        "config": {
          "name": "TRANSIT_VRF",
          "type": "openconfig-network-instance-types:L3VRF"
        },
        "protocols": {
          "protocol": [
            {
              "identifier": "BGP",
              "name": "BGP",
              "config": {
                "identifier": "BGP",
                "name": "BGP"
              },
              "bgp": {
                "global": {
                  "graceful-restart": {
                    "config": {
                      "restart-time": 120,
                      "stale-routes-time": 300
                    }
                  }
                }
              }
            }
          ]
        }
      }
    ]
  }
}

paths:
  ## Config Paths ##
  /network-instances/network-instance/config/type:
  /network-instances/network-instance/interfaces/interface/config/id:
  /network-instances/network-instance/protocols/protocol/bgp/global/config/as:
  /network-instances/network-instance/protocols/protocol/bgp/global/graceful-restart/config/enabled:
  /network-instances/network-instance/protocols/protocol/bgp/global/graceful-restart/config/restart-time:
  /network-instances/network-instance/protocols/protocol/bgp/global/graceful-restart/config/stale-routes-time:
  /network-instances/network-instance/protocols/protocol/bgp/neighbors/neighbor/config/neighbor-address:
  /network-instances/network-instance/protocols/protocol/bgp/neighbors/neighbor/config/peer-as:
  /qos/interfaces/interface/output/queues/queue/config/name:
  /qos/interfaces/interface/output/queues/queue/config/queue-management-profile:
  
  ## State Paths ##
  /qos/interfaces/interface/output/queues/queue/state/dropped-pkts:
  /components/component/state/switchover-ready:
    platform_type: [CONTROLLER_CARD]
  /system/processes/process/state/memory-usage:
  /system/processes/process/state/name:
  /system/processes/process/state/pid:
  /system/processes/process/state/start-time:

rpcs:
  gnmi:
    gNMI.Set:
      union_replace: true
    gNMI.Subscribe:
      on_change: true
    gNMI.Get:
  gnoi:
    system.System.SwitchControlProcessor:

• MFF