@techreport{li-spring-tunnel-segment-02,
    number =    {draft-li-spring-tunnel-segment-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-li-spring-tunnel-segment/02/},
    author =    {Zhenbin Li and Cheng Li and Nan Wu},
    title =     {{Tunnel Segment in Segment Routing}},
    pagetotal = 8,
    year =      2021,
    month =     apr,
    day =       14,
    abstract =  {This document introduces a new type of segment, Tunnel Segment, for the segment routing (SR). Tunnel segment can be used to reduce SID stack depth of SR path, span the non-SR domain or provide differentiated services. Forwarding mechanisms and requirements of control plane and data models for tunnel segments are also defined.},
}