Multi-domain source route selective forwarding based on cooperating network controllers

摘要

By replacing the intra-domain hop list in the source route hop list with a path identifier, efficient and scalable source route selection transfer can be realized in a multi-domain network. Thus, the path identifier is replaced with a corresponding intra-domain hop list at the ingress edge node of each corresponding domain. The path identifier does not specify individual hops according to the intra-domain path segment and is therefore typically shorter than the intra-domain hop list. To implement a multi-domain source route selective forwarding technique, the routing table at the edge node of the corresponding domain associates the route identifier with the corresponding intra-domain hop list during (or immediately after) the inter-domain route calculation. As updated.