Abstract: An efficiently used network can avoid the early emergence of network bottleneck and serve more users with QoS guarantees. In this paper, a path level resource allocation algorithm, P-ERA, is proposed first on the basis of balanced resource allocation. Based on P-ERA and with several network factors, such as link topology position and traffic injected at different source nodes, in mind, a network level resource allocation algorithm, N-ERA, is also developed, which features quantitative path selection and appropriate bandwidth allocation on constituent links along a path, the simulation results indicate that it can make full use of network resources while guaranteeing admitted services.

Key words: resource allocation, path pre-computation, link topology weight, equivalent available bandwidth(EAB), path cost