Abstract
A new routing paradigm that emphasizes searching for an acceptable path satisfying various quality of service (QoS) requirements is needed in the integrated communication networks. In this paper, the routing problem is formulated as a fuzzy optimization model, that takes into consideration bandwidth allocation to avoid link saturation and hence the possibility of congestion. A management-dependent margin is used for bandwidth allocation. A path is considered attractive to incoming calls as long as its available bandwidth is around that margin, This greatly reducer: the fragmentation problem of the load-balancing techniques and avoids packing some paths with heavy loads (with the benefit of decreasing the likelihood of congestion). The proposed model is tested and evaluated under different load conditions and measures of performance.