QoS Routing Using Dominant-Distance Vectors

The Dominant-Distance Routing Information Protocol (DRIP) is introduced for quality-of-service (QoS) routing based on multiple criteria and is proven to be loop-free at every instant and capable of converging to optimal routes if they exist. DRIP is based on the exchange of updates and queries stating reference routing-metric values for destinations. Simulation experiments based on ns3 are used to compare DRIP against the Non-Restarting Vectoring Protocol recently proposed by Sobrinho and Ferreira, as well as OSPF and RIPv2. The results demonstrate that DRIP provides loop-free routing based on multiple performance and policy criteria as efficiently as routing protocols for shortest-path routing.