@misc{rfc4655,
    series =    {Request for Comments},
    number =    4655,
    howpublished =  {RFC 4655},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4655},
    url =       {https://www.rfc-editor.org/info/rfc4655},
    author =    {JP Vasseur and Adrian Farrel and Gerald Ash},
    title =     {{A Path Computation Element (PCE)-Based Architecture}},
    pagetotal = 40,
    year =      2006,
    month =     aug,
    abstract =  {Constraint-based path computation is a fundamental building block for traffic engineering systems such as Multiprotocol Label Switching (MPLS) and Generalized Multiprotocol Label Switching (GMPLS) networks. Path computation in large, multi-domain, multi-region, or multi-layer networks is complex and may require special computational components and cooperation between the different network domains. This document specifies the architecture for a Path Computation Element (PCE)-based model to address this problem space. This document does not attempt to provide a detailed description of all the architectural components, but rather it describes a set of building blocks for the PCE architecture from which solutions may be constructed. This memo provides information for the Internet community.},
}