a.Display entry information

b.Information about an IGMP snooping multicast entry

2.Description of IGMP snooping multicast entries

Item

Description

VLAN ID

ID of the VLAN to which the entry belongs

 

 

Source Address

Multicast source address, where 0.0.0.0 indicates all multicast sources.

 

 

Group Address

Multicast group address

 

 

Router Port(s)

All router ports

 

 

Member Port(s)

All member ports

 

 

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IGMP snooping configuration example

Network requirements

∙As shown in a, Router A connects to a multicast source (Source) through Ethernet 1/2, and to Switch A through Ethernet 1/1.

∙The multicast source sends multicast data to group 224.1.1.1. Host A is a receiver of the multicast group.

∙IGMPv2 runs on Router A and IGMP snooping version 2 runs on Switch A.

∙The function of dropping unknown multicast packets is enabled on Switch A to prevent Switch A from flooding multicast packets in the VLAN if no corresponding Layer 2 forwarding entry exists.

∙The fast leave function is enabled for GigabitEthernet 1/0/3 on Switch A to improve bandwidth and resource usage.

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