Improvement of Hierarchical Routing Protocol in the Network Simulator
Zhongzhi Luan · Acta Simulata Systematica Sinica · 2004
Network simulation is a widely used technique for developing, testing and evaluating network protocols and applications. If the network model being simulated is large, nodes are usually organized into a hierarchy, and hierarchical routing protocols are then most natural. In the popular network simulator ns, hierarchical routing protocol can only compute routes statically and hence it lacks the capability to adapt to a changing network topology. In order to overcome the limitation a new routing module HDR is designed and implemented. HDR, based on a classic hierarchical dynamic routing protocol, is an extension of the Arpanet routing scheme. The framework and design of components are described in detail. Simulation results show that HDR can adapt to the changes of network topology in simulation. Furthermore time of routing convergence is also evaluated.