User guide

IGMP snooping Functional Overview (Includes New Functionality) IGMP snooping
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iMG/RG Software Reference Manual (IGMP)
FIGURE 3-4 Host Disconnects - No Leave Message
• Fast Leave Enabled
When Fast Leave support is enabled, upon the reception of an IGMP leave message, the IGMP process stops
immediately the forwarding of multicast stream towards the internal host.
The IGMP process does not send any specific query to check if there are other hosts still interested to receive
the multicast stream.
When the IGMP process receives the IGMP leave message, if there are no other hosts receiving the same
stream on other ports, it sends immediately an IGMP leave message to the multicast router.