@misc{rfc7555,
    series =    {Request for Comments},
    number =    7555,
    howpublished =  {RFC 7555},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC7555},
    url =       {https://www.rfc-editor.org/info/rfc7555},
    author =    {George Swallow and Vanson Lim and Sam Aldrin},
    title =     {{Proxy MPLS Echo Request}},
    pagetotal = 28,
    year =      2015,
    month =     jun,
    abstract =  {This document defines a means of remotely initiating Multiprotocol Label Switched Protocol (MPLS) Pings on Label Switched Paths. An MPLS Proxy Ping Request is sent to any Label Switching Router along a Label Switched Path. The primary motivations for this facility are first to limit the number of messages and related processing when using LSP Ping in large Point-to-Multipoint LSPs, and second to enable tracing from leaf to leaf (or root).},
}