[DCN]Q&A: How to Configure IGMP Snooping on CE Series Switches ?

When a CE series switch acts as an IPv4 Layer 2 switch, it broadcasts all multicast packets passing through it in a broadcast domain by default. Therefore, all hosts in the same broadcast domain receive the multicast packets, regardless of whether they are group members. This causes a waste of network bandwidth and brings security risks.

This problem can be solved by configuring IGMP snooping on the Layer 2 multicast switch. With IGMP snooping configured, the switch listens to and analyzes IGMP packets exchanged between multicast users and the upstream router, and creates Layer 2 multicast forwarding entries based on IGMP packet information. Multicast data packets are then forwarded based on the Layer 2 multicast forwarding entries, instead of being broadcast on the Layer 2 network.

# Configure IGMP snooping in VLAN 10.

<HUAWEI> system-view

[~HUAWEI] igmp snooping enable                //Enable IGMP snooping globally.

[*HUAWEI] vlan 10

[*HUAWEI-vlan10] igmp snooping enable   //Enable IGMP snooping in the VLAN (broadcast domain).

[*HUAWEI-vlan10] commit

For details about IGMP snooping and how to configure it on CE12800 series switches, visit

http://support.huawei.com/hedex/hdx.do?docid=EDOC1000147767&id=dc_fd_igmp_snp_0001&text=IGMP Snooping Configuration&lang=en

For details about IGMP snooping and how to configure it on CE8800, CE7800, CE6800, and CE5800 series switches, visit

http://support.huawei.com/hedex/hdx.do?docid=EDOC1000147777&id=dc_fd_igmp_snp_0001&text=IGMP Snooping Configuration&lang=en