%% You should probably cite draft-ietf-bier-bfd instead of this I-D.
@techreport{hu-bier-bfd-02,
    number =    {draft-hu-bier-bfd-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-hu-bier-bfd/02/},
    author =    {fangwei hu and Greg Mirsky and Quan Xiong and Chang Liu},
    title =     {{BIER BFD}},
    pagetotal = 6,
    year =      2018,
    month =     oct,
    day =       12,
    abstract =  {Point to multipoint (P2MP) BFD is designed to verify multipoint connectivity. This document specifies the application of P2MP BFD in BIER network.},
}