Patent ID: 6741585
Filing Date: 2004-05-25
Classification: H04L

Abstract:
In an internetwork that includes a first network communicating with a second network via one or more internetworking gateways, the first and second networks using different addressing schemes, a method for interworking between addresses of said first network (first network addresses) and addresses of said second network (second network addresses), comprising the steps of:(a) registering one or more first network addresses in said second network as first network address-encapsulated or -mapped second network addresses wherein at least a portion of each first network address forms part of a corresponding second network address; (b) disseminating reachability information through said second network regarding said first network-encapsulated or -mapped second network addresses; (c) receiving in said second network a communication request containing a first network destination address, (d) performing encapsulation or mapping of said first network destination address into a first network-encapsulated or -mapped second network destination address; and (e) using said second network destination address including the portion thereof formed by said first network destination address, routing a communication request containing said second network destination address through said second network based on said disseminated reachability information.