@misc{rfc4561,
    series =    {Request for Comments},
    number =    4561,
    howpublished =  {RFC 4561},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4561},
    url =       {https://www.rfc-editor.org/info/rfc4561},
    author =    {JP Vasseur and Zafar Ali and Siva Sivabalan},
    title =     {{Definition of a Record Route Object (RRO) Node-Id Sub-Object}},
    pagetotal = 10,
    year =      2006,
    month =     jun,
    abstract =  {In the context of MPLS TE Fast Reroute, the Merge Point (MP) address is required at the Point of Local Repair (PLR) in order to select a backup tunnel intersecting a fast reroutable Traffic Engineering Label Switched Path (TE LSP) on a downstream Label Switching Router (LSR). However, existing protocol mechanisms are not sufficient to find an MP address in multi-domain routing networks where a domain is defined as an Interior Gateway Protocol (IGP) area or an Autonomous System (AS). Hence, the current MPLS Fast Reroute mechanism cannot be used in order to protect inter-domain TE LSPs from a failure of an Area Border Router (ABR) or Autonomous System Border Router (ASBR). This document specifies the use of existing Record Route Object (RRO) IPv4 and IPv6 sub-objects (with a new flag defined) thus defining the node-id sub-object in order to solve this issue. The MPLS Fast Reroute mechanism mentioned in this document refers to the "Facility backup" MPLS TE Fast Reroute method. {[}STANDARDS-TRACK{]}},
}