@misc{rfc6457,
    series =    {Request for Comments},
    number =    6457,
    howpublished =  {RFC 6457},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6457},
    url =       {https://www.rfc-editor.org/info/rfc6457},
    author =    {Tomonori Takeda and Adrian Farrel},
    title =     {{PCC-PCE Communication and PCE Discovery Requirements for Inter-Layer Traffic Engineering}},
    pagetotal = 12,
    year =      2011,
    month =     dec,
    abstract =  {The Path Computation Element (PCE) provides functions of path computation in support of traffic engineering in networks controlled by Multi-Protocol Label Switching (MPLS) and Generalized MPLS (GMPLS). MPLS and GMPLS networks may be constructed from layered client/server networks. It is advantageous for overall network efficiency to provide end-to-end traffic engineering across multiple network layers. PCE is a candidate solution for such requirements. Generic requirements for a communication protocol between Path Computation Clients (PCCs) and PCEs are presented in RFC 4657, "Path Computation Element (PCE) Communication Protocol Generic Requirements". Generic requirements for a PCE discovery protocol are presented in RFC 4674, "Requirements for Path Computation Element (PCE) Discovery". This document complements the generic requirements and presents detailed sets of PCC-PCE communication protocol requirements and PCE discovery protocol requirements for inter-layer traffic engineering. This document is not an Internet Standards Track specification; it is published for informational purposes.},
}