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A Simple Distributed Loop-Free Routing Strategy for Computer Communication Networks
December 1993 (vol. 4 no. 12)
pp. 1308-1319

The loops resulting from either component failures or load changes in a computercommunication network degrade the performance and the adaptability of conventionaldistributed adaptive routing strategies, such as ARPANET's previous routing strategy(APRS). The authors develop distributed loop-free routing strategy by adding only oneadditional piece of information-the total number of minimum-delay paths-to the commonly used routing messages and tables. The proposed routing strategy requires only easily obtainable information, yet removes loops completely. It is far more efficient in both time and space than its conventional counterparts, especially for sparse computer networks. The authors prove the correctness of the proposed strategy, and give several illustrative examples. The performance of this strategy is shown to be better than, or at least as good as, that of APRS and any multiorder routing strategies, in which the order of a routing strategy is determined by the amount of routing information carried in eachrouting message.

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Index Terms:
Index Termsloop-free; routing strategy; computer communication networks; component failures; loadchanges; distributed adaptive routing; ARPANET; computer networks; correctness;distributed loop-free routing; fault-tolerant routing; network delay tables; routingmessages; computer networks; fault tolerant computing; network routing
Citation:
K.G. Shin, C.C. Chou, "A Simple Distributed Loop-Free Routing Strategy for Computer Communication Networks," IEEE Transactions on Parallel and Distributed Systems, vol. 4, no. 12, pp. 1308-1319, Dec. 1993, doi:10.1109/71.250113
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