%% You should probably cite draft-ietf-mpls-extended-admin-group instead of this I-D.
@techreport{osborne-mpls-extended-admin-groups-00,
    number =    {draft-osborne-mpls-extended-admin-groups-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-osborne-mpls-extended-admin-groups/00/},
    author =    {Eric Osborne},
    title =     {{Extended Administrative Groups in MPLS-TE}},
    pagetotal = 5,
    year =      2013,
    month =     feb,
    day =       13,
    abstract =  {This document provides additional administrative groups (sometimes referred to as "link colors") to the IGP extensions for MPLS-TE.},
}