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Support for EVPN Route Type 5

 

Contrail Release 5.0.1 and later supports EVPN Route Type 5 messages as defined in the IETF specification IP Prefix Advertisement in EVPN. EVPN Route Type 5 is an extension of EVPN Route Type 2, which carries MAC addresses along with their associated IP addresses. EVPN Route Type 5 facilitates in inter-subnet routing.

Type 5 network layer reachability information (NLRI) contains information in the following format:

When Type-5 EVPN prefix is received from a BGP peer, it is first installed into bgp.evpn.0 like all other routes. From here, based on matching route targets, the route gets replicated into all *.evpn.0 tables as applicable. From there, the routes are advertised over Extensible messaging and presence protocol (XMPP) to all interested agents.

Note

In Release 5.0.1, policy based route-leaking among different L3VRFs is not supported. Hence, service chaining for Type 5 L3VRFs is also not supported.