Increasing ip network survivability in harsh scenarios with dynamic source routing

With the ubiquity of IP services, networks, especially Internet, are playing more and more important role in daily life than ever. The IP network survivability is gaining increasing attention from the Internet research community and a lot of recipes to the survivability were proposed. Unfortunately, harsh scenarios (e.g. earth quakes, hurricanes) which have great impact on the network topologies have always been overlooked. The reason may be the rarity of this kind of scenarios but they do exist and the consequents are disruptive. In this paper, we propose a dynamic source routing scheme to handle route disruptions in harsh scenarios. The proposed scheme doesn´t alter the existing routing and forwarding diagrams. Instead, it can collaborate with the existing routing protocol and provide alternate route during the routing convergence. Simulation results show that compared with traditional routing protocol, the proposed routing scheme remarkably reduces service disruption time.