@techreport{ietf-isis-l1l2-00,
    number =    {draft-ietf-isis-l1l2-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-isis-l1l2/00/},
    author =    {Tony Przygienda and Ajay Patel},
    title =     {{L1/L2 Optimal IS-IS Routing}},
    pagetotal = 7,
    year =      1999,
    month =     feb,
    day =       19,
    abstract =  {This draft describes an optional extension within IS-IS {[}Cal90a, Cal90b, ISO90{]} for leaking level 2 IP prefixes into level 1. IS-IS is an interior gateway routing protocol developed originally by OSI and used with IP extensions as IGP. This draft describes how to allow for optimal routing in L1/L2 per destination prefix and to support BGP {[}RL95{]} MEDs derived from level 1 and level 2 IGP metric when using ISIS.},
}