VPLS Overview

VPLS allows multiple Ethernet LANs from different customer sites to be connected together across the service provider (SP) network, thereby emulating a single Ethernet LAN segment for that customer. Figure 12-1 shows an SP network providing VPLS services in which multiple customer sites (belonging to Customer A) can communicate as if they are connected as a private Ethernet LAN segment. VPLS uses Multiprotocol Label Switching (MPLS) to offer multipoint Ethernet connectivity over a mesh of logical circuits or tunnels, with the added benefits of Traffic Engineering (TE), resilience, and failover. VPLS enables carriers and SPs to offer managed Ethernet VPN services easily and cost effectively.

Figure 12-1. VPLS—Emulated LAN Service ...

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