AN OPTIMAL DISTRIBUTED PROTOCOL FOR FAST CONVERGENCE TO MAXMIN RATE ALLOCATION

The problem of allocating maxmin rates with minimum rate guarantees for connection-oriented networks is considered. This technical report builds on previous work [RT00a, RT00b]. Based on the theory presented in this previous work, an optimally fast maxmin rate allocation protocol called Distributed CPG Protocol is designed. The contributions are twofold. On one hand, the signaling protocol that transports the network status from one switch to another is built so that the switch response time is minimized. The new protocol employs bi-directional minimization and does not induce transient oscillations. On the other hand, a low computational cost algorithm to compute the maxmin rate allocations at each node is designed. By using a fluid analogy, we prove that it is possible to reduce the complexity of the switch to (log()) O N , where N is the number of detected flows in the switch. The Distributed CPG protocol is compared against ERICA.

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