A Single System Image Server Cluster using Duplicated MAC and IP Addresses

  • Authors:
  • Sujit Vaidya;Kenneth J. Christensen

  • Affiliations:
  • -;-

  • Venue:
  • LCN '01 Proceedings of the 26th Annual IEEE Conference on Local Computer Networks
  • Year:
  • 2001

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Abstract

Clusters of PC's are ncreasingly being used to buildhigh-capacity web sites.We develope and evaluate amethod of building a Single System Image (SSI) clusterthat does not require a central dispatcher.In our CloneCluster method, which builds on the existing ONE-IPmethod, a group of mirrored server machines withidentical MAC and IP addresses are configured on ashared-medium LAN.Each machine filters incoming IPpackets based on a hash of IP source addresses.UnlikeONE-IP, our method does not require routerconfiguration changes.We build and evaluate a Linux-based, two-PC cluster that uses an odd/even filter.Simulation results show that the effect of server selectionmethod on mean response time is less significant forheavy-tailed interarrival times than for exponentialinterarrival times.Simulat on results show that responsetime performance from a Clone Cluster can be very closeto that of a centrally dispatched least-loaded cluster.