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Internet has become an integrated carrier gradually, which has multi business such as data, voice, video, multimedia and so on. New multimedia applications require the network to guarantee quality of service. MPLS network has the capability of routing with some specific constraints for supporting desired QoS, out of which bandwidth is the most important constraint. The efficient routing algorithm should have low computational complexity, high network utilization and low call blocking percentage. This paper proposes a new Bandwidth guaranteed QoS routing algorithm based on MPLS networks.
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