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TE-3.1: Base Hierarchical Route Installation

Summary

Validate IPv4 AFT support in gRIBI with recursion.

Procedure

Topology:

  • Connect ATE port-1 to DUT port-1 and ATE port-2 to DUT port-2.
  • TODO: create a non-default VRF (VRF-1) that includes DUT port-1.
  • Establish gRIBI client connection with DUT using default parameters and persistence mode PRESERVE, make it become leader and flush all entries after each case.

Validate hierarchical resolution across VRFs:

  1. Using gRIBI Modify RPC install the following IPv4Entry set per the following order, and ensure FIB ACK is received for each of the AFTOperation:

    1. Add 203.0.113.1/32 (default VRF) to NextHopGroup (default VRF) containing one NextHop (default VRF) specified to be the address of ATE port-2.
    2. Add 198.51.100.0/24 (TODO: VRF-1) to NextHopGroup (default VRF) containing one NextHop (default VRF) specified to be 203.0.113.1/32 in the default VRF.

  2. Forward packets between ATE port-1 and ATE port-2 (destined to 198.51.100.0/24) and determine that packets are forwarded successfully.

  3. Validate that both routes are shown as installed via AFT telemetry.

  4. Ensure that removing the IPv4Entry 203.0.113.1/32 with a DELETE operation results in traffic loss, and removal from AFT.

TODO: Validate hierarchical resolution using egress interface and MAC:

  1. Using gRIBI Modify RPC install the following IPv4Entry set per the following order, and ensure FIB ACK is received for each of the AFTOperation:

    1. Add 203.0.113.1/32 (default VRF) to NextHopGroup (default VRF) containing one NextHop (default VRF) that specifies DUT port-2 as the egress interface and 00:1A:11:00:00:01 as the destination MAC address.
    2. Add 198.51.100.0/24 (VRF-1) to NextHopGroup (default VRF) containing one NextHop (default VRF) specified to be 203.0.113.1/32 in the default VRF.

  2. Forward packets between ATE port-1 and ATE port-2 (destined to 198.51.100.0/24) and ensure that ATE port-2 receives packet with 00:1A:11:00:00:01 as the destination MAC address.

TODO: Validate error reporting:

  1. Use gRIBI Modify RPC to install the following entries:

    1. Add 203.0.113.1/32 (default VRF) to NextHopGroup (default VRF) containing one NextHop (default VRF) specified to be the address of ATE port-2.
    2. Add 198.51.100.0/24 (VRF-1) to NextHopGroup (default VRF) containing one NextHop (default VRF) specified to be 203.0.113.1/32 in the default VRF.

    But with the following (table) scenarios:

    • Replace 203.0.113.1/32 with a syntax invalid IP address.
    • Missing NextHopGroup for the IPv4Entry 203.0.113.1/32.
    • Empty NextHopGroup for the IPv4Entry 203.0.113.1/32.
    • Empty NextHop for the IPv4Entry 203.0.113.1/32.
    • Invalid IPv4 address in NextHop for the IPv4Entry 203.0.113.1/32.

  2. Ensure FAILED returned for the related IPv4Entry, NHG and NH in all the above scenarios.

  3. Ensure RIB ACK, but not FIB ACK, is returned for the IPv4Entry 198.51.100.0/24 in all the above scenarios.

If the device supports it, repeat the cases in this test with gRIBI client persistence mode DELETE without flushing entries between cases.

Config Parameter coverage

No configuration relevant.

Telemetry Parameter coverage

For prefix:

  • /network-instances/network-instance/afts/

Parameters:

  • ipv4-unicast/ipv4-entry/state
  • ipv4-unicast/ipv4-entry/state/next-hop-group
  • ipv4-unicast/ipv4-entry/state/origin-protocol
  • ipv4-unicast/ipv4-entry/state/prefix
  • next-hop-groups/next-hop-group/id
  • next-hop-groups/next-hop-group/next-hops/next-hop/index
  • next-hop-groups/next-hop-group/next-hops/next-hop/state
  • next-hop-groups/next-hop-group/next-hops/next-hop/state/index
  • next-hop-groups/next-hop-group/state/id
  • next-hop-groups/next-hop-group/state/programmed-id
  • next-hops/next-hop/index
  • next-hops/next-hop/interface-ref/state/interface
  • next-hops/next-hop/interface-ref/state/subinterface (not supported)
  • next-hops/next-hop/state/index
  • next-hops/next-hop/state/state/programmed-id (not supported)
  • next-hops/next-hop/state/ip-address
  • next-hops/next-hop/state/mac-address (not supported)

Protocol/RPC Parameter coverage

  • gRIBI:
    • Modify()
    • ModifyRequest:
      • AFTOperation:
      • id
      • network_instance
      • op
      • Ipv4
        • Ipv4EntryKey: prefix
        • Ipv4Entry: next_hop_group
      • next_hop_group
        • NextHopGroupKey: id
        • NextHopGroup: next_hop
      • next_hop
        • NextHopKey: id
        • NextHop:
        • ip_address
        • mac_address
        • interface_ref
    • ModifyResponse:
    • AFTResult:
      • id
      • status

Minimum DUT platform requirement

vRX if the vendor implementation supports FIB-ACK simulation, otherwise FFF.

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