%% You should probably cite draft-ietf-trill-directory-assisted-encap instead of this I-D.
@techreport{dunbar-trill-directory-assisted-encap-03,
    number =    {draft-dunbar-trill-directory-assisted-encap-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-dunbar-trill-directory-assisted-encap/03/},
    author =    {Linda Dunbar and Donald E. Eastlake 3rd and Radia Perlman and Igor Gashinsky},
    title =     {{Directory Assisted TRILL Encapsulation}},
    pagetotal = 9,
    year =      2013,
    month =     feb,
    day =       25,
    abstract =  {This draft describes how data center network can benefit from non- RBridge nodes performing TRILL encapsulation with assistance from directory service.},
}