%% You should probably cite draft-ietf-mpls-tp-shared-ring-protection instead of this I-D.
@techreport{cheng-mpls-tp-shared-ring-protection-01,
    number =    {draft-cheng-mpls-tp-shared-ring-protection-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-cheng-mpls-tp-shared-ring-protection/01/},
    author =    {Weiqiang Cheng and Lei Wang and Han Li and Kai Liu and He Jia and Fang Li and Yang Jian and Junfang Wang},
    title =     {{MPLS-TP Shared-Ring protection (MSRP) mechanism for ring topology}},
    pagetotal = 22,
    year =      2013,
    month =     jul,
    day =       8,
    abstract =  {This document describes requirements and solutions for MPLS-TP Shared Ring Protection (MSRP) in the ring topology for point-to-point (P2P) services. The mechanism of MSRP is illustrated and analyzed how it satisfies the requirements in RFC5654 for optimized ring protection.},
}