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A network engineer is deploying VPLS configuration between multiple PE routers so that customer's remote offices have end-to-end LAN connectivity. Which additional configuration should the engineer perform on the PE routers to enable the virtual switch instance?
Correct Answer: B
In a Virtual Private LAN Service (VPLS) deployment, the VFI (Virtual Forwarding Instance) acts as the "virtual switch" inside the PE router. It is responsible for bridging traffic between the customer-facing attachment circuits and the MPLS pseudowires that connect to other PEs. To enable a functional VPLS instance, the PE needs to know who its "neighbors" (the other PE routers) are to build the full-mesh of pseudowires. l2 vfi <name> manual: This enters the configuration mode for the virtual switch. vpn id <number>: This uniquely identifies the VPLS instance across the MPLS core. neighbor <IP> encapsulation mpls: This manually defines the remote PE routers that are part of the same broadcast domain.