Patent ID: 7551635
Filing Date: 2009-06-23
Classification: H04J,H04L

Abstract:
1. A synchronous optical network (SONET) system having multi-hierarchal network service access point (NSAP) addressing, the system comprising: a plurality of network elements (NEs) electrically linked, wherein the NEs comprise devices having respective NSAP addresses and at least one of the NEs is a network controller that controls the SONET; and a first level routing area and a second level routing area that each comprise at least one NE, wherein the first level routing area and the second level routing area are based on a predetermined prioritization of the NEs as first level NEs and second level NEs, and having a first level routing and having a second level routing for the NSAP addresses, respectively; wherein each NSAP address includes a Routing Domain field and an Area field filled with information indicative of a respective Internet Protocol (IP) address.