%% You should probably cite rfc6215 instead of this I-D.
@techreport{ietf-mpls-tp-uni-nni-03,
    number =    {draft-ietf-mpls-tp-uni-nni-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-ietf-mpls-tp-uni-nni/03/},
    author =    {Dan Frost and Lieven Levrau and Matthew Bocci},
    title =     {{MPLS Transport Profile User-to-Network and Network-to-Network Interfaces}},
    pagetotal = 6,
    year =      2011,
    month =     jan,
    day =       7,
    abstract =  {The framework for MPLS in transport networks (RFC 5921) provides reference models for the MPLS Transport Profile (MPLS-TP) Transport Service Interfaces, which are a User-to-Network Interface (UNI), and a Network-to-Network Interface (NNI). This document updates those reference models to show detailed reference points for these interfaces, along with further clarification of the functional architecture of MPLS-TP at a UNI and NNI. This document is a product of a joint Internet Engineering Task Force (IETF) / International Telecommunication Union Telecommunication Standardization Sector (ITU-T) effort to include an MPLS Transport Profile within the IETF MPLS and Pseudowire Emulation Edge-to-Edge (PWE3) architectures to support the capabilities and functionalities of a packet transport network as defined by the ITU-T. This document is not an Internet Standards Track specification; it is published for informational purposes.},
}