Analytical Characterization of Failure Recovery in REAP Articles uri icon

publication date

  • March 2010

start page

  • 485

end page

  • 499


  • 4


  • 33

International Standard Serial Number (ISSN)

  • 0140-3664

Electronic International Standard Serial Number (EISSN)

  • 1873-703X


  • This paper characterizes analytically the performance of REAchability Protocol (REAP), a network layer end-to-end recovery protocol for IPv6. REAP was developed by the IETF SHIM6 Working Group as part of its
    multihoming solution. The behavior of REAP is governed by a small number
    of parameters: three timers, a simple characterization of the
    application traffic, and the communication delay. The key figure of
    merit of REAP performance is the time to recover from a path failure as
    seen by the upper layers, figure that cannot be trivially obtained,
    despite the apparent simplicity of this reachability protocol. In this
    paper we provide upper bounds for the recovery time of REAP for
    different deployment scenarios, applying these analytical results to two
    interesting case studies, TCP and VoIP traffic.