@misc{rfc7761,
    series =    {Request for Comments},
    number =    7761,
    howpublished =  {RFC 7761},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC7761},
    url =       {https://www.rfc-editor.org/info/rfc7761},
    author =    {Bill Fenner (ˢˣˠ) and Mark J. Handley and Hugh Holbrook and Isidor Kouvelas and Rishabh Parekh and Zhaohui (Jeffrey) Zhang and Lianshu Zheng},
    title =     {{Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)}},
    pagetotal = 137,
    year =      2016,
    month =     mar,
    abstract =  {This document specifies Protocol Independent Multicast - Sparse Mode (PIM-SM). PIM-SM is a multicast routing protocol that can use the underlying unicast routing information base or a separate multicast-capable routing information base. It builds unidirectional shared trees rooted at a Rendezvous Point (RP) per group, and it optionally creates shortest-path trees per source. This document obsoletes RFC 4601 by replacing it, addresses the errata filed against it, removes the optional (*,*,RP), PIM Multicast Border Router features and authentication using IPsec that lack sufficient deployment experience (see Appendix A), and moves the PIM specification to Internet Standard.},
}