@techreport{ietf-pim-v2-sm-01,
    number =    {draft-ietf-pim-v2-sm-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-pim-v2-sm/01/},
    author =    {Dr. Deborah Estrin and Van Jacobson and Dino Farinacci and Liming Wei and Dr. Steve E. Deering and Mark J. Handley and Dave Thaler and Ching-Gung Liu and Puneet Sharma and Ahmed Helmy},
    title =     {{Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol Specification}},
    pagetotal = 65,
    year =      1999,
    month =     dec,
    day =       1,
    abstract =  {This document describes a protocol for efficiently routing to multicast groups that may span wide-area (and inter-domain) internets. We refer to the approach as Protocol Independent Multicast--Sparse Mode (PIM-SM) because it is not dependent on any particular unicast routing protocol, and because it is designed to support sparse groups as defined in {[}1{]}{[}2{]}. This document describes the protocol details. For the motivation behind the design and a description of the architecture, see {[}1{]}{[}2{]}. Section 2 summarizes PIM-SM operation. It describes the protocol from a network perspective, in particular, how the participating routers interact to create and maintain the multicast distribution tree. Section 3 describes PIM-SM operations from the perspective of a single router implementing the protocol; this section constitutes the main body of the protocol specification. It is organized according to PIM-SM message type; for each message type we describe its contents, its generation, and its processing.},
}