Restrictions and guidelines
For a global neighbor port, the set aging time does not take effect when the port receives an IPv6 PIM hello message after a master/subordinate switchover. The aging time for the port is determined by the aging time in the IPv6 PIM hello message.
For a global router port or global downstream port, the set aging time does not take effect when the port receives an IPv6 PIM join message after a master/subordinate switchover. The aging time for the port is determined by the aging time in the IPv6 PIM join message.