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Github Action edited this page Jun 13, 2024 · 5 revisions

gNMI-1.15: Set Requests

Summary

Ensures that the device respects certain gNMI SetRequest corner case behaviors.

Topology

  • ATE port-1 and DUT port-1
  • ATE port-2 and DUT port-2

Procedure

Each test should be implemented as three variants:

  • RootOp: performs a get-modify-set of the full config at root. The SetRequest contains one replace operation.
  • ContainerOp: performs a get-modify-set on both /interfaces and /network-instances. The SetRequest contains two replace operations, one for each container of the list.
  • ItemOp: SetRequest contains delete, replace or update on the list items (e.g. under /interfaces/interface[name] and /network-instances/network-instance[name]).

The results MUST be the same.

Notes:

  • Use --deviation_default_network_instance for the name of the default VRF.
  • Use --deviation_static_protocol_name for the name of the static protocol.

Test: Get and Set

This test checks that the config read from the device can be written back.

  1. Obtain the full config at root using gNMI Get.
  2. Deploy the config back to the same device using a gNMI SetRequest.

Test: Delete Interface

This test checks that the config of a physical interface can be reset to the default value using the delete operation.

  1. Initialize the interfaces in the same SetRequest.

    • Configure dut:port1 with the description dut:port1.
    • Configure dut:port2 with the description dut:port2.

    Verify through telemetry that these interfaces are configured correctly.

  2. Delete dut:port1 and dut:port2 in the same SetRequest.

    In the ContainerOp variant, delete the interfaces by omission.

    Verify through telemetry that the interfaces still exist, but the description has been reset to no value.

Test: Reuse IP

This test checks that the IP address of a deleted interface can be immediately reused by another interface.

Allocate two aggregate interface names using netutil.NextAggregateInterface. We refer to them as dut:agg1 and dut:agg2 below.

  1. Initialize the interfaces in the same SetRequest.

    • Delete dut:port1, dut:port2, dut:agg1 and dut:agg2.
    • Configure dut:agg1 with member dut:port1 and IP address 192.0.2.1/30.
    • Configure dut:agg2 with member dut:port2 and IP address 192.0.2.5/30.

    Verify through telemetry that these interfaces are configured correctly.

  2. Modify the interfaces in the same SetRequest:

    • Delete dut:agg1.
    • Configure dut:agg2 to have the IP address 192.0.2.1/30.

    Verify through telemetry that dut:agg2 has the correct IP address.

  3. Clean up by deleting dut:agg2.

Test: Swap IPs

This test checks that the IP addresses of two interfaces can be swapped in the same SetRequest.

  1. Initialize the interfaces in the same SetRequest:

    • Configure dut:port1 with IP address 192.0.2.1/30.
    • Configure dut:port2 with IP address 192.0.2.5/30.

    Verify through telemetry that these interfaces are configured correctly.

  2. Modify the interfaces in the same SetRequest:

    • Set dut:port1 address to 192.0.2.5/30.
    • Set dut:port2 address to 192.0.2.1/30.

    Verify through telemetry that the interfaces have the correct IP addresses.

Test: Delete Non-Existing VRF

This test checks that a non-existing VRF can be deleted.

  1. Initialize by making sure the VRF GREEN does not exist.

    This is no-op for ContainerOp and RootOp. Only ItemOp will generate a DELETE operation in the SetRequest. The request should succeed.

Test: Delete Non-Default VRF

This test checks that a non-default VRF can be deleted.

  1. Initialize the interfaces in the same SetRequest:

    • Configure dut:port1 with IP address 192.0.2.1/30.
    • Configure dut:port2 with IP address 192.0.2.5/30.
    • Configure a non-default VRF BLUE attaching both interfaces.

    Verify through telemetry that these interfaces are configured correctly and attached to the non-default VRF.

  2. Clean up by deleting VRF BLUE.

    Verify through telemetry that the VRF is not present.

Test: Move Interfaces Between VRFs

This test checks that interfaces can be moved from one VRF to a different VRF while preserving the interface configs.

There should be two variants of this test:

  • Moving from the default VRF to non-default VRF BLUE.
  • Moving from non-default VRF RED to another non-default VRF BLUE.

Steps:

  1. Initialize the attachment in the same SetRequest:

    • Configure dut:port1 with IP address 192.0.2.1/30.
    • Configure dut:port2 with IP address 192.0.2.5/30.
    • Attach both interfaces to the first VRF. Create the first VRF as L3VRF if it is not the default.

    Verify through telemetry that these interfaces are configured correctly and attached to the first VRF.

  2. Modify attachment in the same SetRequest:

    • Detach dut:port1 and dut:port2 from the first VRF. If the first VRF is not the default VRF, delete it.
    • In the ContainerOp variant, also replace the interfaces dut:port1 and dut:port2 with exactly the same config as before.
    • Configure the second VRF as L3VRF attaching dut:port1 and dut:port2.

  3. Verify through telemetry:

    • The IP addresses of dut:port1 and dut:port2 are as expected.
    • The dut:port1 and dut:port2 interfaces are attached to the second VRF.

  4. Clean up by deleting the second VRF.

Test: Static Protocol

This test checks that the static protocol name is usable.

  1. Initialize the attachment in the same SetRequest:

    • Configure dut:port1 with IP address 192.0.2.1/30.
    • Configure dut:port2 with IP address 192.0.2.5/30.
    • Configure a non-default VRF BLUE attaching both interfaces.
    • Configure the static routes in VRF BLUE as follows:
      • Prefix 198.51.100.0/24 has next-hop 192.0.2.2 and interface dut:port1.
      • Prefix 203.0.113.0/24 has next-hop 192.0.2.6 and interface dut:port2.

    Verify through telemetry that the static routes are configured correctly.

  2. Modify the static routes in VRF BLUE as follows in the same SetRequest.

    • Prefix 198.51.100.0/24 has next-hop 192.0.2.6 and interface dut:port2.
    • Prefix 203.0.113.0/24 has next-hop 192.0.2.2 and interface dut:port1.

    Verify through telemetry that the static routes are configured correctly.

  3. Clean up by deleting VRF BLUE.

RPC Coverage

  • gNMI.Set

OpenConfig Path and RPC Coverage

rpcs:
  gnmi:
    gNMI.Get:
    gNMI.Subscribe:
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