A SRLG-Disjoint Routing Algorithm With QoS Consideration

SRLG is a group of network links that share a common physical resource whose failure will cause the failure of all links of the group. To protect a logical connection in a network from a single SRLG failure, two different paths are usually assigned to the connection. The two paths must be disjoint to avoid synchronous failure. In this paper, we extend a high-performance link-disjoint routing algorithm called CoLE to SRLG-disjoint routing. The analysis and the simulation results demonstrate improvement over the previous algorithms.

Keywords:

routing , fault tolerance , optical network