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Overview: This feature of MPLS AToM - Ethernet Over MPLS allows the user to connect two VLAN networks that are in different locations, without using expensive bridges, routers, or switches at the VLAN locations. The user can enable the MPLS backbone network to accept Layer 2 VLAN traffic by configuring the Label Edge Routers (LERs) at both ends of the MPLS backbone. Adding a point-to-point Virtual Circuit (VC) requires the user to configure the two VC endpoints at the two PE routers. Only the two PE routers at the ingress/egress points of the MPLS backbone know about the VCs dedicated to transporting Layer 2 VLAN traffic.
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