bgp_prefix_limit_test

RT-1.5: BGP Prefix Limit

Summary

BGP Prefix Limit

Procedure

• Configure eBGP session between ATE port-1 and DUT port-1,with an Accept-route all import-policy/export-policy under the BGP peer-group AFI/SAFI.
• With maximum prefix limits of unlimited, and N.
  • Advertise prefixes of limit - 1, limit, limit + 1. Validate session state meets expected value at ATE.
  • Ensure that DUT marks session as prefix-limit exceeded for limit+1 prefixes.
• Advertise prefixes to exceed configured limit, and to limit - 1 following session teardown, ensure session is re-established per the restart timer (with ATE session marked as passive).
• With maximum-prefix warning-only configured, ensure that the routes that were sent prior to the max-prefix being exceeded are retained in the routing table by forwarding traffic to prefix{0..n-1} and prefix{n} where n is the maximum prefix limit configured.

OpenConfig Path and RPC Coverage

paths:
  /network-instances/network-instance/protocols/protocol/bgp/peer-groups/peer-group/state/peer-group-name:
  /network-instances/network-instance/protocols/protocol/bgp/neighbors/neighbor/state/neighbor-address:
  /network-instances/network-instance/protocols/protocol/bgp/peer-groups/peer-group/afi-safis/afi-safi/ipv4-unicast/prefix-limit/config/max-prefixes:
  /network-instances/network-instance/protocols/protocol/bgp/peer-groups/peer-group/afi-safis/afi-safi/ipv4-unicast/prefix-limit/state/warning-threshold-pct:
  /network-instances/network-instance/protocols/protocol/bgp/peer-groups/peer-group/afi-safis/afi-safi/ipv4-unicast/prefix-limit/state/prefix-limit-exceeded:

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

Minimum DUT platform requirement

vRX