Igmp snooping querier configuration example, Network requirements – H3C Technologies H3C S12500 Series Switches User Manual
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Total 1 MAC Group(s).
Router port(s):total 1 port(s).
GE3/0/2 (D)
IP group(s):the following ip group(s) match to one mac group.
IP group address:224.1.1.1
(0.0.0.0, 224.1.1.1):
Attribute: Host Port
Host port(s):total 2 port(s).
GE3/0/3 (S)
GE3/0/5 (S)
MAC group(s):
MAC group address:0100-5e01-0101
Host port(s):total 2 port(s).
GE3/0/3
GE3/0/5
The output shows that GigabitEthernet 3/0/3 and GigabitEthernet 3/0/5 on Device C have
become static member ports for multicast group 224.1.1.1.
IGMP snooping querier configuration example
Network requirements
As shown in
, in a Layer 2–only network environment, two multicast sources Source 1 and
Source 2 send multicast data to multicast groups 224.1.1.1 and 225.1.1.1 respectively, Host A and Host C
are receivers of multicast group 224.1.1.1, and Host B and Host D are receivers of multicast group 225.1.1.1.
All the receivers are running IGMPv2, and all the devices need to run IGMPv2 snooping. Device A,
which is close to the multicast sources, is chosen as the IGMP snooping querier.
To prevent flooding of unknown multicast traffic within the VLAN, be sure to configure all the devices to
drop unknown multicast data packets. Because a switch does not enlist a port that has heard an IGMP
query with a source IP address of 0.0.0.0 (default) as a dynamic router port, configure a non-all-zero IP
address as the source IP address of IGMP queries to ensure normal creation of Layer 2 multicast
forwarding entries.