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Github Action edited this page Apr 18, 2023 · 7 revisions

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.

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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