@techreport{yang-idr-sr-candidate-path-switch-00,
    number =    {draft-yang-idr-sr-candidate-path-switch-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-yang-idr-sr-candidate-path-switch/00/},
    author =    {Liping Yang and Hao Li and Yang Wang and Yuanxiang Qiu and Mengxiao Chen},
    title =     {{Segment Routing Candidate Path Hot-standby switch in BGP}},
    pagetotal = 8,
    year =      2021,
    month =     feb,
    day =       2,
    abstract =  {Segment Routing is a source routing paradigm that explicitly indicates the forwarding path for packets at the ingress node. An SR policy is a set of candidate SR paths consisting of one or more segment lists with necessary path attributes. If an SR policy has multiple valid candidate paths, the device chooses the candidate path with the greatest preference value. If the chosen path fails, the SR policy must select another candidate path. During path reselection, packet loss might occur and thus affect service continuity. Therefore the candidate path hot-standby function occurs, the headend can compute two candidate paths, one is master and the other is backup, set them to the forwarding plane, and in this way, the switchover time is reduced. This document defines extensions to BGP to distribute hot-standby switch within SR policies.},
}