Patent ID: 6438100
Filing Date: 2002-08-20
Classification: H04L

Abstract:
A Carrier Scale Internetworking (CSI) system that provides multiple services, the CSI system comprises:a plurality of routing service control points, wherein each of the plurality of routing service control points includes at least one routing service instance to provide routing information for a realm, wherein the realm is a specific instance of one of the multiple services, and wherein at least one of the plurality of routing service control points includes the at least one routing service instance of another one of the plurality of routing service control points for redundancy; a plurality of access terminations operable to provide user access to the CSI system; a plurality of edge forwarders each operably coupled to at least one of the plurality of access terminations, wherein each of the edge forwarders establish associations with at least one routing service instance on at least one routing service control point to forward data to a user associated with the realm; a default forwarder operably coupled to the plurality of edge forwarders, wherein the default forwarder receives packets for forwarding from at least one of the plurality of edge forwarders when the one of the plurality of edge forwarders is retrieving forwarding information; a configuration server that maintains state information for a plurality of clients and provides operational information to at least one client of the plurality of clients, wherein the plurality of clients include at least some of the routing service control points, at least some of the edge forwarders, and the default forwarder.