Patent ID: 8238338
Filing Date: 2012-08-07
Classification: H04L

Abstract:
1. A method comprising: receiving connectivity data for at least one network device, said connectivity data describing a connection to said at least one network device within an area; processing said connectivity data to obtain a routing update for distribution to a router outside said area to update routing information stored by the router to route network traffic; including a routing summary in said routing update, said routing summary including an address prefix that indicates an associated network address space; including in said routing update reachability information for a plurality of network addresses within said network address space, said reachability information being encoded and being decodable by combination thereof with said routing summary, to identify within said network address space one or more unreachable network addresses and one or more reachable network addresses, said one or more reachable network addresses including an address for said at least one network device; and distributing the routing update to the router outside said area.