@techreport{ietf-mospf-prunes-00,
    number =    {draft-ietf-mospf-prunes-00},
    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-mospf-prunes/00/},
    author =    {John Moy},
    title =     {{MOSPF Prunes}},
    pagetotal = 11,
    year =      1998,
    month =     dec,
    day =       23,
    abstract =  {MOSPF is a link-state multicast routing protocol, based on OSPF. Inside a single OSPF area, the delivery of multicast datagrams is restricted to group members only, by propagating the location of group members through group-membership-LSAs. However, group membership is not propagated across area and/or AS boundaries, relying instead on so-called wild-card multicast receivers. This means that in some cases multicast datagrams are transmitted further than necessary, wasting link and processor resources in the process. This document defines a way to prune these excess branches off the MOSPF delivery tree, using a new Prune-LSA. In concept these are similar to the prunes employed by the DVMRP protocol. However, to reuse the reliability mechanisms present in the base OSPF protocol, MOSPF prunes are implemented as local-scope Opaque-LSAs. As a result, inter-area and inter-AS multicast datagrams are forwarded by MOSPF using the broadcast-and-prune strategy employed by DVMRP.},
}