Additional PIM Concepts and Options
All the IPv6 concepts of aggregate trees, shortest-path copse (SPT), switching amid aggregate trees
and SPTs, bidirectional PIM, and the RP behavior of tracking multicast groups and senders are
identical to IPv4 PIM. The command anatomy for configuring PIM is additionally about identical to IPv4.
In IPv6, the ipv6 keyword precedes specific interface commands, instead of ip. Also, some
additional command-line arguments abide for the IPv6 commands.