a bandwidth-constrained anycast routing for mobile ip in a diffserv backbone network
In this paper, we propose a bandwidth-constrained anycast routing in a DiffServ domain for mobile IP networks. The proposed approach is based on the assumption that the primary QoS parameter is bandwidth. When moving into a new foreign network, the mobile node (MN) should choose the most appropriate path to easily locate the nearest server that can serve it. To perform a path selection algorithm, each extended edge router (E-ER) works in conjunction with the extensions of OSPF protocol first. Then, the visited E-ER uses the proposed approach to find a new path from itself to the server based on the MN's service level agreement (SLA). However, this new path may be a route optimization or through MN' HA depending on whether the MN has already connected to a server before moving. The simulation results have shown that the proposed approach has better performance, especially in the case where the number of MN is large.
anycast mobile ip diffserv e-er route optimization