Approximate distributed Bellman-Ford algorithms
Baruch Awerbuch, Amotz Bar-Noy, M. H. Gopal · IEEE Transactions on Communications · 1994
Routing algorithms based on the distributed Bellman-Ford algorithm (DBF) suffer from exponential message complexity in some scenarios. We propose two modifications to the algorithm which result in a polynomial message complexity without adversely affecting the response time of the algorithm. However, the new algorithms may not compute the shortest path. Instead, the paths computed can be worse than the shortest path by at most a constant factor (>