Operation Manual – Multicast
H3C S3100 Series Ethernet Switches Chapter 2 IGMP Snooping Configuration
2-18
Table 2-20 Display and maintain IGMP Snooping
Operation Command Remarks
Display the current IGMP
Snooping configuration
display igmp-snooping
configuration
Display IGMP Snooping
message statistics
display igmp-snooping
statistics
Display the information
about IP and MAC
multicast groups in one or
all VLANs
display igmp-snooping
group [ vlan vlanid ]
You can execute the
display commands in any
view.
Clear IGMP Snooping
statistics
reset igmp-snooping
statistics
You can execute the
reset command in user
view.
2.4 IGMP Snooping Configuration Examples
2.4.1 Configuring IGMP Snooping
I. Network requirements
To prevent multicast traffic from being flooded at Layer 2, enable IGMP snooping on
Layer 2 switches.
z As shown in Figure 2-3, Router A connects to a multicast source (Source) through
Ethernet1/0/2, and to Switch A through Ethernet1/0/1.
z Run PIM-DM and IGMP on Router A. Run IGMP snooping on Switch A. Router A
acts as the IGMP querier.
z The multicast source sends multicast data to the multicast group 224.1.1.1. Host A
and Host B are receivers of the multicast group 224.1.1.1.
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