Huawei Quidway S3900 Series - Page 374

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