@misc{rfc5212,
    series =    {Request for Comments},
    number =    5212,
    howpublished =  {RFC 5212},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC5212},
    url =       {https://www.rfc-editor.org/info/rfc5212},
    author =    {Jean-Louis Le Roux and Kohei Shiomoto and Martin Vigoureux and Dimitri Papadimitriou and Deborah Brungard},
    title =     {{Requirements for GMPLS-Based Multi-Region and Multi-Layer Networks (MRN/MLN)}},
    pagetotal = 28,
    year =      2008,
    month =     jul,
    abstract =  {Most of the initial efforts to utilize Generalized MPLS (GMPLS) have been related to environments hosting devices with a single switching capability. The complexity raised by the control of such data planes is similar to that seen in classical IP/MPLS networks. By extending MPLS to support multiple switching technologies, GMPLS provides a comprehensive framework for the control of a multi-layered network of either a single switching technology or multiple switching technologies. In GMPLS, a switching technology domain defines a region, and a network of multiple switching types is referred to in this document as a multi-region network (MRN). When referring in general to a layered network, which may consist of either single or multiple regions, this document uses the term multi-layer network (MLN). This document defines a framework for GMPLS based multi-region / multi-layer networks and lists a set of functional requirements. This memo provides information for the Internet community.},
}