Patent ID: 7486610
Filing Date: 2009-02-03
Classification: H04L

Abstract:
1. A method implemented in a router for transitioning between states for use in a redundant router group, the method comprising: providing a plurality of virtual ports in a router, wherein the virtual ports include a master virtual port and one or more client virtual ports, wherein the master virtual port belongs to a same master group as one or more master virtual peers that are each provided at a different other router and each client virtual port belongs to a same client group as one or more client virtual peers provided at one or more other routers; initiating a selected one of the transitions after occurrence of an event, wherein the initiating of the selected transition is performed only with respect to the master virtual port and the one or more master virtual peers; and when a selected one of the transitions is initiated with respect to the master virtual port of the router, mimicking the selected transition with respect to the one or more client virtual port(s) of the router.