The following routes are sent with the RFC 5512 BGP Encapsulation Extended Community:
MAC/IP
Inclusive Multicast Ethernet Tag
AD per-EVI routes
ES routes and AD per-ESI routes are not sent with this extended community.
The router processes MPLS encapsulation: 10, the BGP tunnel encapsulation tunnel value registered by IANA for RFC 5512. Any other tunnel value makes the route ‟treat-as-withdraw”.
If the encapsulation value is MPLS, the BGP validates the high-order 20 bits of the label field, ignoring the low-order 4 bits.
If the encapsulation extended community (as defined in RFC 5512) is not present in a received route, BGP treats the route as an MPLS. On the 7210 SAS, only MPLS encapsulation is supported.