@misc{rfc4906,
    series =    {Request for Comments},
    number =    4906,
    howpublished =  {RFC 4906},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4906},
    url =       {https://www.rfc-editor.org/info/rfc4906},
    author =    {Nasser El-Aawar and Luca Martini and Eric C. Rosen},
    title =     {{Transport of Layer 2 Frames Over MPLS}},
    pagetotal = 22,
    year =      2007,
    month =     jun,
    abstract =  {This document describes methods for transporting the Protocol Data Units (PDUs) of layer 2 protocols such as Frame Relay, Asynchronous Transfer Mode (ATM) Adaption Layer 5 (AAL5), and Ethernet, and for providing a Synchronized Optical Network (SONET) circuit emulation service across an MPLS network. This document describes the so-called "draft-martini" protocol, which has since been superseded by the Pseudowire Emulation Edge to Edge Working Group specifications described in RFC 4447 and related documents. This memo defines a Historic Document for the Internet community.},
}