NOR-145PC (18756ROW03U) BORDER GATEWAY PROTOCOL PROCEDURES FOR MULTI-PROTOCOL LABEL SWITCHING AND LAYER-2 VIRTUAL PRIVATE NETWORKS USING ETHERNET-BASED TUNNELS ABSTRACT Described are a network, network device, and method for a method of distributing routing information for a virtual private network (VPN) -application through a packet-switched network (PSN) having fully - - -meshed provider edge (PE) routers through Provider Backbone Bridge (PBB) tunnels. Each PE router is configured to support at least one VPN and to run a BGP (Border Gateway Protocol) as an auto-discovery ■process for finding one or more other PE routers attached to the same - VPN. A given VPN is associated with a PBB tunnel. A service instance identifier (I-SID), as defined in IEEE 802. lah, is assigned to the VPN. Each PE router advertises membership in the VPN by including the I-SID assigned to the VPN in a BGP message issued during the auto- discovery process.
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