Reaching strong consensus in the presence of mixed failure types

Hin Sing Siu*, Yeh Hao Chin, Wei Pang Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The Strong Consensus (SC) is a variant of the conventional distributed consensus problem. The protocol designed for the SC problem requires that the agreed value among fault-free processors be one of the fault-free processor's initial value. The SC problem is re-examined with the assumption of mixed failure types (also referred to as the hybrid fault model). Compared with the features of the existing protocols, the underlying network topologies of the proposed protocol do not have to be fully connected, the mixed failure types can be tolerated, and no prior information of the system's faulty status is required. The proposed protocol can tolerate a maximum number of faults to enable each fault-free processor to reach an agreement with a minimum number of message exchanges.

Original languageEnglish
Pages (from-to)157-180
Number of pages24
JournalInformation Sciences
Issue number1-4
Publication statusPublished - 1998 Jul
Externally publishedYes


  • Byzantine agreement
  • Distributed consensus
  • Fault-tolerant distributed system
  • Mixed failure types
  • Nonfully connected network
  • Strong consensus

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Theoretical Computer Science
  • Computer Science Applications
  • Information Systems and Management
  • Artificial Intelligence


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