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Matching Capability of Hierarchical Nexthops to Forward Packets for Qos |
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PP: 75S-79S |
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Author(s) |
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Guan Li-An,
Wang Bin-Qiang,
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Abstract |
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| The traditional Qos guarantee mechanisms based on a single nexthop cannot provide really
differentiated services in network layer. With the various available nexthops generated by multinexthop
routing protocol, a new Qos guarantee scheme called Matching Capability of Hierarchical
Nexthops is proposed in the paper. It chooses bandwidth and reliability of nexthop link as parameters
to measure the performance of nexthop links. Using heuristic algorithm for the above parameters to
divide multiple available nexthops into three subsets with different link performances, packets are
forwarded with the matching relationship between Qos demand and nexthop capability. Simulation
results show that the proposed scheme obviously exceeds DiffServ in packet average delay and is
promising to improve throughput and resource utilizing rate of network, realizing differentiated
services in deed in network layer as nexthop links are optional. |
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