Process.
This reduces the bursty traffic on the network.
multicast group immediately (in a matter of seconds) instead of having to
wait up to three minutes. The process is known as the IGMP Leave process.
The two new additions of the Leave and Group-Specific messages work
together to allow a host to remove itself from the multicast group immedi-
ately without interrupting the state of the interface on the multicast router.
expressing the intent to withdraw from the multicast group. Because
Router1 doesn't know how many hosts on the segment belong to group
224.2.155.145, it must send a Group-Specific Query to see if there are any
hosts that remain members of the group. If no responses are received, the
router disables multicast forwarding out of the interface for the
224.2.155.145 group. If any hosts respond to the query, the router leaves the
interface status quo. In the figure, you can see that HostB responds because
it is still participating in the group 224.2.155.145. Hence, the interface is left
active for that group.