supervisor_switchover_test

gNOI-3.3: Supervisor Switchover

Summary

Validate that the active supervisor can be successfully switched to the standby supervisor in a dual-supervisor system. This test validates the management plane recovery, zero traffic loss over LACP port-channels, and negative corner cases such as back-to-back switchovers.

Testbed type

• featureprofiles/topologies/ate_tests/topology_2_ports.testbed

Procedure

Test environment setup

• Configure an LACP port-channel across 2 DUT ports connected to the IXIA/ATE.
• Start continuous data-plane traffic from the IXIA/ATE over the LACP interfaces to the DUT. The traffic must run continuously from the beginning to the end of the entire test suite.

Canonical OC

{
  "interfaces": {
    "interface": [
      {
        "name": "Port-Channel1",
        "config": {
          "name": "Port-Channel1",
          "type": "iana-if-type:ieee8023adLag"
        }
      },
      {
        "name": "Ethernet1",
        "config": {
          "name": "Ethernet1"
        },
        "openconfig-if-ethernet:ethernet": {
          "openconfig-if-aggregate:config": {
            "aggregate-id": "Port-Channel1"
          }
        }
      },
      {
        "name": "Ethernet2",
        "config": {
          "name": "Ethernet2"
        },
        "openconfig-if-ethernet:ethernet": {
          "openconfig-if-aggregate:config": {
            "aggregate-id": "Port-Channel1"
          }
        }
      }
    ]
  },
  "lacp": {
    "interfaces": {
      "interface": [
        {
          "name": "Port-Channel1",
          "config": {
            "name": "Port-Channel1",
            "interval": "FAST",
            "lacp-mode": "ACTIVE"
          }
        }
      ]
    }
  }
}

gNOI-3.3.1: Supervisor Switchover and Recovery Validation

• Step 1: Issue gnoi.SwitchControlProcessor to the chassis.
• Step 2: Validate the switchover was successful:
  • Verify the standby RE/SUP becomes active by checking /components/component/state/redundant-role transitions to PRIMARY.
  • Verify the old active RE/SUP transitions to STANDBY.
• Step 3: Validate traffic and LACP state during and after the switchover:
  • Verify the LACP session does not flap and connected ports remain up (/interfaces/interface/state/oper-status
  • Validate the member ports are in-sync (/lacp/interfaces/interface/members/member/state/synchronization is IN_SYNC).
  • Validate there is zero traffic loss from IXIA over the LACP ports during the entire switchover event.
• Step 4: Validate management plane recovery:
  • Execute a simple gNMI.Set (e.g., updating an interface description) and a gNMI.Get to ensure the new active supervisor fully processes management operations.

gNOI-3.3.2: Back-to-Back Switchover (Negative Case)

• Step 1: Trigger an SSO via gnoi.SwitchControlProcessor.
• Step 2: Immediately issue a second gnoi.SwitchControlProcessor request while the new standby supervisor (the former primary) is still in an unready state.
• Step 3: Validate the system gracefully rejects the second request or handles it safely without crashing. The active supervisor must maintain control and traffic must continue with zero loss.

gNOI-3.3.3: Switchover with Power-Disabled Standby (Negative Case)

• Step 1: Disable the standby supervisor (e.g., by setting its component admin-state or via power down).
• Step 2: Attempt to trigger an SSO via gnoi.SwitchControlProcessor.
• Step 3: Verify the switchover request is rejected.
• Step 4: Verify the current active supervisor safely maintains control and there is zero traffic loss.

OpenConfig Path and RPC Coverage

paths:
  ## Component State Paths ##
  /system/state/current-datetime:
  /components/component/state/last-switchover-time:
    platform_type: [ "CONTROLLER_CARD" ]
  /components/component/state/last-switchover-reason/trigger:
    platform_type: [ "CONTROLLER_CARD" ]
  /components/component/state/last-switchover-reason/details:
    platform_type: [ "CONTROLLER_CARD" ]
  /components/component/state/redundant-role:
    platform_type: [ "CONTROLLER_CARD" ]
  /components/component/state/oper-status:
    platform_type: [ "CONTROLLER_CARD" ]
  
  ## Interface and LACP State Paths ##
  /interfaces/interface/state/oper-status:
  /lacp/interfaces/interface/members/member/state/synchronization:

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

Required DUT platform

• MFF