The following table lists the supported EVPN routes and their usage in the 7210 SAS EVPN-MPLS.
EVPN route |
Usage |
EVPN-MPLS 7210 SAS support |
|---|---|---|
Type 1 - Ethernet auto-discovery route (A-D) |
Mass-withdraw, ESI labels, aliasing |
Yes1 |
Type 2 - MAC/IP advertisement route |
MAC/IP advertisement, IP advertisement for ARP resolution |
Yes |
Type 3 - Inclusive multicast Ethernet Tag route |
Flooding tree setup (BUM flooding) |
Yes |
Type 4 - Ethernet segment (ES) route |
ES discovery and DF election |
Yes |
RFC 7432 describes the BGP-EVPN control plane for MPLS tunnels. If EVPN multi-homing is not required, two route types are needed to set up a basic EVPN Instance (EVI): MAC/IP Advertisement and the Inclusive Multicast Ethernet Tag routes. If multi-homing is required, the ES and the Auto-Discovery routes are also needed.
When EVPN multi-homing is enabled in the system, two additional routes are required. The following figure shows the fields in routes type 1 and 4 and their associated extended communities.
