Loop-free IP fast rerouting considering double-link failures

Shohei Kamamura, Daisaku Shimazaki, Atsushi Hiramatsu, Hidenori Nakazato

Research output: Contribution to journalArticle

Abstract

IP fast rerouting has widely been studied for realizing millisecond-order recovery on pure IP networks. This paper proposes IP fast rerouting using backup topologies against concurrent double failures. The main issue in recovering from multiple failures is avoiding forwarding loops. To avoid forwarding loops, we propose a deterministic forwarding algorithm, which estimates the concurrently occurring failures from the packet header information. We also propose an efficient backup topology design algorithm which is both loop-free and which reduces the number of backup topologies. Our key idea is preparing the adequate diversity of backup routes for arbitrary source and destination pairs by combination of backup topologies. For efficient computation of diverse routes, we propose a similarity comparison-based algorithm between the original topology and the backup topologies. Our algorithm can achieve nearly optimal loop-free restoration from double failures on realistic topologies without explicit failure notification.

Original languageEnglish
Pages (from-to)3811-3821
Number of pages11
JournalIEICE Transactions on Communications
VolumeE95-B
Issue number12
DOIs
Publication statusPublished - 2012 Dec

Keywords

  • Backup topologies
  • Diversity
  • IP fast rerouting
  • Loop-free
  • Multiple failures
  • Network similarity

ASJC Scopus subject areas

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

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