A New Routing Architecture for DiffServ Domains

S. Chen (PRC), Y. Ling, S. Chen, and Y. Tang (USA)


Communications Protocol, Quality of Service, Routing, Admission Control


This paper(1) proposes a new DiffServ routing architecture (PAP) that integrates the admission control signaling and the QoS routing. It differs from traditional routing in its ability to route most Expedite Forward ing (EF) traffic along the shortest paths while making use of alternative paths to absorb transient overload. Once an EF data flow is admitted, its performance is assured. The overhead for storing alterative path in formation is minimal since only one routing entry at a branching point is needed for each alternative path. The route map of Cisco IOS provides a mechanism for implementing PAP.

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