Mingling Multipath Routing With Quality Of Service
Shuchita Upadhyaya, Gaytri Devi · 2011
The QoS issue in the Internet have become essential for the successful transmission of multimedia applications. The basic problem of QoS routing is to find a path satisfying multiple constraints. It is concerned with identifying the path that will consider multiple parameters like bandwidth, delay, cost, hopcount etc. instead of one.To provide user- or applicationlevel Quality of Service (QoS) guarantee Multipath routing strategy can be used for the transmission of QoS sensitive traffic over the network. Multipath routing means using multiple paths instead of using single path to forward the traffic.If multiple paths are being used for the transmission of the traffic then the traffic will be redirected to the back up path if active path fails. In this way robustness can be achieved. On the other hand load balancing for communication network to avoid network congestion & optimize network throughput also requires multi paths to distribute flows. Robustness & load balancing are aspects of QoS routing. So multipath can be proved very valuable for Quality of service. This paper investigates the approaches of mingling Multipath & Quality of service. The approaches considered are based on Dijkstra algorithm, Bellman ford algorithm, Resource reservation & MPLS.