@misc{rfc8364,
    series =    {Request for Comments},
    number =    8364,
    howpublished =  {RFC 8364},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC8364},
    url =       {https://www.rfc-editor.org/info/rfc8364},
    author =    {IJsbrand Wijnands and Stig Venaas and Michael Brig and Anders Jonasson},
    title =     {{PIM Flooding Mechanism (PFM) and Source Discovery (SD)}},
    pagetotal = 18,
    year =      2018,
    month =     mar,
    abstract =  {Protocol Independent Multicast - Sparse Mode (PIM-SM) uses a Rendezvous Point (RP) and shared trees to forward multicast packets from new sources. Once Last-Hop Routers (LHRs) receive packets from a new source, they may join the Shortest Path Tree (SPT) for the source for optimal forwarding. This document defines a new mechanism that provides a way to support PIM-SM without the need for PIM registers, RPs, or shared trees. Multicast source information is flooded throughout the multicast domain using a new generic PIM Flooding Mechanism (PFM). This allows LHRs to learn about new sources without receiving initial data packets.},
}