VLL Service Considerations
Page 168 7210 SAS M Services Guide
Access Node Resilience Using MC-LAG and Pseudowire
Redundancy
Note that MC-Lag and pseudowire redundancy are not supported on the 7210 SAS D, E, but the
7210 SAS D, E supports active/standby links which lets it to be dual-homed to two PEs (which can
be 7210 SAS-M (network mode) or 7210 SAS-X or 7x50/SR based on network scaling
requirements) that support MC-LAG.
Figure 30 shows the use of both Multi-Chassis Link Aggregation (MC-LAG) in the access
network and pseudowire redundancy in the core network to provide a resilient end-to-end VLL
service to the customers. . The aggregation nodes A, B, C, D can be either 7210 SAS-M (network
mode) or 7210 SAS-X or 7x50/SR nodes, depending on the network scaling requirements.In
Figure 30, the 7210 SAS-M (network mode) and 7210 SAS-X can be use as the aggregation node.
The nodes represented by 7210 in the figure can be 7210 SAS-D or 7210 SAS-E or 7210 SAS-M
(access-uplink mode).
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