A Technique for Constructing Dependable Internet Server Cluster

Mamoru OHARA  Masayuki ARAI  Satoshi FUKUMOTO  Kazuhiko IWASAKI  

IEICE TRANSACTIONS on Information and Systems   Vol.E86-D   No.10   pp.2198-2208
Publication Date: 2003/10/01
Online ISSN: 
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Fault Tolerance
server clustering,  distributed algorithm,  IP multicast,  DNS,  dependability evaluation,  

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An approach is proposed for constructing a dependable server cluster composed only of server nodes with all nodes running the same algorithm. The cluster propagates an IP multicast address as the server address, and clients multicast requests to the cluster. A local proxy running on each client machine enables conventional client software designed for unicasting to communicate with the cluster without having to be modified. Evaluation of a prototype system providing domain name service showed that a cluster using this technique has high dependability with acceptable performance degradation.