System, method, and router for routing data packets in an overlay network

摘要

A system, method, and router for routing data packets in an overlay network built over heterogeneous layer-3 domains. A link state overlay routing protocol enables an overlay router to route data packets based on flat identifiers and decides the best path to a destination taking into account a number of parameters such as round trip time. Scalability is provided by making routing decisions based on a network identifier rather than a single end-node identifier.