VPLS (V irtual Private LAN Service) enables enterprises to link together their Ethernet-based LANs from
multiple sites via the infrastructure provided by their service provider . From the enterprise perspective, the
service provider's public network looks like one giant Ethernet LAN. For the service provider, VPLS provides
an opportunity to deploy another revenue-generating service on top of their existing network without major
capital expenditures. Operators can extend the operational life of equipment in their network.
Virtual Private LAN Services (VPLS) uses the provider core to join multiple attachment circuits together to
simulate a virtual bridge that connects the multiple attachment circuits together . From a customer point of
view , there is no topology for VPLS. All of the CE devices appear to connect to a logical bridge emulated by
