Concurrent fault detection for a multiple-plane packet switch

Roberto Rojas-Cessa, Eiji Oki, H. Jonathan Chao

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In high-speed and high-capacity packet switches, system reliability is critical to avoid loss of huge amounts of information and retransmission of traffic. We propose a series of concurrent fault-detection mechanisms for a multiple-plane crossbar-based packet switch. Our switch model, called the m + z model, has m active planes and z spare planes. This switch has distributed arbiters on each plane. The spare planes, used for substitution of faulty active ones, are also used in the fault-detection mechanism, thus providing fault detection and fault location for all switching planes. Our detection schemes are able to quickly detect a single fault without increasing transmission overhead. The proposed schemes can be used for switches with different numbers of active planes and a small number of spare planes.

Original languageEnglish (US)
Pages (from-to)616-627
Number of pages12
JournalIEEE/ACM Transactions on Networking
Issue number4
StatePublished - Aug 2003

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


  • Concurrent testing
  • Fault detection
  • Packet switch
  • Parallel planes
  • Single fault


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