Trunk Network Fault-Tolerance through Routing Table Updating in the Event of Trunk Failure
نویسنده
چکیده
Traditionally, research into circuit-switched (C-S) communication networks has been divided into two areas, reliability and performance, each making little reference to the other. More recently, however, research has focused on unification of the two. One possible choice for a combined performance and reliability measure is the network grade-of-service (NGOS), i.e. the overall probability of blocking, averaged over all node pairs, taking into account both the offered traffic between node pairs and the link (trunk group) availabilities. In a recent paper [1], two methods were given for the single-moment analysis of fixed-alternative-routing circuit-switched communications networks with reliable nodes but unreliable links. The second of these, MKV_GOS, employs a Markov model for an unreliable link, in combination with earlier work [2-6], so as to greatly reduce execution time compared to existing algorithms.
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