@misc{rfc7449,
    series =    {Request for Comments},
    number =    7449,
    howpublished =  {RFC 7449},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC7449},
    url =       {https://www.rfc-editor.org/info/rfc7449},
    author =    {Young Lee and Greg M. Bernstein and Jonas Mårtensson and Tomonori Takeda and Takehiro Tsuritani and Oscar Gonzalez de Dios},
    title =     {{Path Computation Element Communication Protocol (PCEP) Requirements for Wavelength Switched Optical Network (WSON) Routing and Wavelength Assignment}},
    pagetotal = 12,
    year =      2015,
    month =     feb,
    abstract =  {This memo provides application-specific requirements for the Path Computation Element Communication Protocol (PCEP) for the support of Wavelength Switched Optical Networks (WSONs). Lightpath provisioning in WSONs requires a Routing and Wavelength Assignment (RWA) process. From a path computation perspective, wavelength assignment is the process of determining which wavelength can be used on each hop of a path and forms an additional routing constraint to optical light path computation. Requirements for PCEP extensions in support of optical impairments will be addressed in a separate document.},
}