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An adaptive hierarchical routing protocol

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4 Author(s)
Tsai, W.T. ; Dept. of Comput. Sci., Minnesota Univ., Minneapolis, MN, USA ; Ramamoorthy, C.V. ; Tsai, W.K. ; Nishiguchi, O.

An adaptive hierarchical routing protocol based on the extension of the new Arpanet scheme is proposed and its simulated performance is presented. The protocol can adapt to rapidly changing environments and works for arbitrarily large networks. A number of existing schemes as well as the proposed scheme are simulated under many different environments and clustering structures. The proposed protocol is found to be superior to the other protocols tested in many different types of network traffic and topological configurations. The results indicate that intercluster links must be reliable, because (1) the failure of these links can significantly degrade the routing performance, even though the protocol does not degrade as badly as the existing scheme and (2) hierarchical routing protocols usually prefer small clusters, which means that there will be many intercluster links. The tradeoff between two conflicting performance criteria, response speed and communication overhead, is shown

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Computers, IEEE Transactions on  (Volume:38 ,  Issue: 8 )