MPLS:VPLS VPLS must be configured for redundancy using ESRP. The ESRP master VLAN must include the ISC ports and the VPLS service VLAN ports as members.
Pseudowires cannot traverse an ISC link. You should not add the ISC port as a member to MPLS VLANs that can be used by LSPs that can carry Layer 2 VPN traffic terminating on MLAG peer switches.
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