Fuzzy generalized network approach for solving an optimization model for routing in B-ISDN

Routing algorithms are required to guarantee the various quality of service (QoS) characteristics requested by the wide range of applications supporte d by Broadband Integrated Services Digital Networks (B-ISDN). In this paper the routing problem is formulated as a fuzzy multiobjective optimization m odel. The fuzzy approach allows for the inclusion and evaluation of several criteria simultaneously. The proposed model takes into consideration the b alancing of the load in the network to avoid link saturation and hence the possibility of congestion. A hybrid approach that combines the generalized network concept with the technique of fuzzy programming is recommended to s olve the model. The efficiency and applicability of the model is tested und er different load conditions by studying several measures of performance.