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Multi-Path Backup Self-Healing Algorithm for ATM Networks
Kiyohito YOSHIHARA Gen HATTORI Keizo SUGIYAMA Sadao OBANA
IEICE TRANSACTIONS on Communications
Publication Date: 1999/11/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on New Paradigms in Network Management)
fault management, self-healing, recovery ratio, recovery priority, ATM,
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For backup of failed VPs (Virtual Paths) in ATM (Asynchronous Transfer Mode) networks, many self-healing algorithms have already been proposed. However, since the existing algorithms recover each failed VP with a single backup VP, a problem arises in that those algorithms cannot necessarily provide a failed VP having a higher recovery priority with a larger recovery ratio, which is the ratio of the bandwidth of a backup VP to that of a failed VP. For a solution to the problem, this paper proposes a new self-healing algorithm which recovers each failed VP with one or more backup VPs. We also evaluate its availability by comparing with an existing algorithm through simulations.