Evaluation of post-fault restoration strategies in multi-domain networks |
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Authors: | Feng XuTamal Das Min PengNasir Ghani |
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Affiliation: | a University of New Mexico, 87131-0001 Albuquerque, NM, United Statesb IIT Bombay, Indiac Wuhan University, China |
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Abstract: | Although multi-domain survivability is a major concern for operators, few studies have considered the design of post-fault restoration schemes. This paper proposes two such strategies, based upon hierarchical routing and signaling crankback, to handle single and multi-link failure events in multi-domain IP/MPLS networks (also extendible to optical DWDM networks). Specifically, the hierarchical routing strategy relies upon abstracted domain information to compute inter-domain loose routes, whereas the crankback scheme applies signaling re-tries to restore paths in a domain-by-domain manner. The performance of these proposed solutions is then analyzed and compared via simulation. |
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Keywords: | Multi-domain network Network survivability Multi-failure restoration Signaling crankback Hierarchical routing |
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