Huawei Quidway S3900 Series Operation Manual page 374

Operation Manual – Multicast Protocol
Quidway S3900 Series Ethernet Switches-Release 1510
Message Sender
IGMP
leave Host
message
Receiver Purpose
Notify the
multicast
router
Multicast and
router multicast
and switch
multicast that the
switch host is
leaving its
multicast
group.
Huawei Technologies Proprietary
Chapter 2 IGMP Snooping Configuration
Switch action
Multicast router and multicast
switch send IGMP specific
group query packet(s) to the
multicast group
member host sends leave
packets to check
multicast group has
members and enable
corresponding query timer.
2-5
If no response
is received
from the port
before the
timer times
out, the switch
will check
whether the
port
corresponds to
a single MAC
multicast
group.
If yes,
remove the
correspond
ing MAC
multicast
group and
IP multicast
group
If no,
remove
only those
whose
entries that
if the correspond
to this port
any
the in the MAC
multicast
group, and
remove the
correspond
ing
multicast
group
entries
If no response
is received
from the
multicast
group before
the timer times
out, notify the
router
remove this
multicast
group node
from the
multicast tree
IP
to