Published: 2013-06-01 18:34:48
(Virtual Private LAN Service) A multipoint virtual private network (VPN) service from carriers that connects any number of Ethernet LANs together over an IP core, typically using MPLS, although other encapsulation protocols can be used. Known as a "transparent LAN service" (TLS), from a customer's viewpoint, all connections appear as one Ethernet network, and all protocols in the customer's network (IP, IPX, etc.) are automatically supported.
Prior to VPLS, attempts at transparent LAN services had been problematic. Ethernet is a broadcasting technology, while carrier networks are point-to-point. VPLS was designed to resolve this dichotomy and provide ease of scalability for the service provider.
Encyclopedia article about VPLS by TheFreeDictionary.com
