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In this paper, we investigate the effect of different restoration sequence upon multiple failure recovery in multi-wavelength WDM networks. The major difference among these arrangements is on restoration speed and resource utilization. We develop heuristics to find restoration sequence for dynamic traffic demands with different quality of service requirements. Especially, we adopt the aggregate rerouting...
In this paper, we study the heuristic algorithms for finding two paths that are not passing through any same shared risk link group (SRLG) between each pair of source-destination nodes. For this NP-complete problem, we design a heuristic algorithm which steadily outperforms the best existing algorithm in the first several iterations. When larger number of iterations is allowed, we show that several...
Survivable routing of a connection involves computation of a pair of diverse routes such that at most one route fails when failures occur in the network topology. A subset of links in the network that share the risk of failure at the same time are said to belong to a shared risk link group (SRLG) [J. Strand et al., Feb 2001]. A network with shared risk link groups defined over its links is an SRLG...
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