@techreport{xz-pim-flex-algo-03,
    number =    {draft-xz-pim-flex-algo-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-xz-pim-flex-algo/03/},
    author =    {Zheng Zhang and BenChong Xu and Stig Venaas and Zhaohui (Jeffrey) Zhang and Hooman Bidgoli},
    title =     {{Multi-Topology in PIM}},
    pagetotal = 11,
    year =      2024,
    month =     oct,
    day =       21,
    abstract =  {PIM usually uses the shortest path computed by routing protocols to build multicast tree. Multi-Topology Routing is a technology to enable service differentiation within an IP network. IGP Flex Algorithm provides a way to compute constraint-based paths over the network. This document defines the PIM message extensions to provide a way to build multicast tree through the specific topology and constraint-based path instead of the shortest path.},
}