36
Total 1 entries.
VLAN 100: Total 1 entries.
(0.0.0.0, 224.1.1.1)
Host slots (0 in total):
Host ports (2 in total):
GE2/1/3
GE2/1/5
The output shows that GigabitEthernet 2/1/3 and GigabitEthernet 2/1/5 on Switch C have become
static member ports of the multicast group 224.1.1.1.
IGMP snooping querier configuration example
Network requirements
As shown in Figure 14:
• The network is a Layer 2-only network.
• Source 1 and Source 2 send multicast data to the 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
o f m u l t i c a s t g r o u p 225 .1.1.1.
• All host receivers run IGMPv2, and all switches run IGMPv2 snooping. Switch A (which is close to
the multicast sources) acts as the IGMP querier.
To prevent the switches from flooding unknown packets in the VLAN, enable dropping unknown multicast
packets on all the switches.
Figure 14 Network diagram
Configuration procedure
1. Configure Switch A:
# Enable IGMP snooping globally.
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