MC-EP is not supported on the 7210 SAS. This section provides an example of how 7210 SAS devices can be used as MTU devices in an MC-EP solution. In this solution, the 7750 SR routers provide the MC-EP functionality.
Inter-domain VPLS refers to a VPLS deployment where sites may be in different domains. An example of inter-domain deployment can be where different Metro domains are interconnected over a Wide Area Network (Metro1-WAN-Metro2) or where sites are in different autonomous systems (AS1-ASBRs-AS2).
Multi-chassis endpoint (MC-EP) provides an alternate solution that does not require RSTP at the gateway VPLS PEs while still using pseudo wires to interconnect the VPLS instances located in the two domains.
MC-EP expands the single chassis endpoint based on active-standby pseudo wires for VPLS shown in the following figure. In the solution depicted by the following figure, 7210 devices are used as MTUs.
The active-standby Pseudowires solution is appropriate for the scenario when only one VPLS PE (MTU-s) needs to be dual-homed to two core PEs (PE1 and PE2).