Abstract
The ATM Forum traffic management specification provides the guidelines to support the ABR point-to-multipoint connections. For point-to-multipoint connections, the branch points of a multicast tree replicate cells traveling from root to leaves and consolidate feedback traveling from leaves to root. The feedback consolidation is necessary to avoid excessive backward resource management (BRM) cells and to aggregate the information from BRM cells received in the leaf-to-root direction from each branch. In the design of consolidation algorithms there are two major conflicting problems: consolidation delay and consolidation noise. We propose an efficient congestion control algorithm for the multicast ABR service in ATM networks. The proposed scheme can achieve fast transient response to the congestion status. We investigate the performance of the proposed scheme and compare it with that of the Roberts's (1994) algorithm.
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