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Multiagent-Based Reservation of Backup Virtual Paths in ATM Networks
IEICE TRANSACTIONS on Communications
Publication Date: 2001/06/01
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on New Developments on QoS Technologies for Information Networks)
ATM network, virtual path, multiagent, network resource saving, fault tolerance,
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In order to make the ATM network fault-tolerant and the network service flexible, a method for the setting up of backup virtual paths (VP's for short) using multiagents is effective with respect to adaptability to change of network resource and user requirements, examples of which are failure of nodes and links and addition of VP's, respectively. In this method, under the assumption that candidates of backup VP's between different pairs of source and destination nodes are given, the optimum backup VP's are obtained by exchanging information among agents autonomously. First, this paper proposes measures for determining backup VP's between different pairs of source and destination nodes. Next, this paper presents simulation results to evaluate the adaptability of the method. The results show that the method efficiently obtains the optimum backup VP's even when the number of backup VP's increases and that different idle time at each destination node enables to shorten the total processing time while keeping complete detection of shared links.