H3C Technologies H3C S10500 Series Switches - Manual (Page 132)

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NOTE:
•
The reset igmp group command cannot remove static IGMP group entries.
• The display igmp host interface command can display information about the hosts tracked by IGMP on
Layer 3 interfaces other than VLAN interfaces.
• The display igmp ssm-mapping host interface command can display information about the hosts that
join the group based on IGMP SSM mappings on Layer 3 interfaces other than VLAN interfaces.
CAUTION:
The reset igmp group command might cause an interruption of receivers’ reception of multicast data.
IGMP configuration examples
Basic IGMP functions configuration example
Network requirements
• Receivers receive VOD information through multicast. Receivers of different organizations form stub
networks N1 and N2, and Host A and Host C are receivers in N1 and N2 respectively.
• Switch A in the PIM network connects to N1, and both Switch B and Switch C connect to N2.
• Switch A connects to N1 through VLAN-interface 100 and to other switches in the PIM network
through VLAN-interface 101.
• Switch B and Switch C connect to N2 through their respective VLAN-interface 200 and to other
switches in the PIM network through VLAN-interface 201 and VLAN-interface 202, respectively.
• IGMPv2 is required between Switch A and N1. IGMPv2 is also required between the other two
switches and N2. Switch B acts as the IGMP querier in N2 because it has a lower IP address.
• The hosts in N1 can join only multicast group 224.1.1.1, and the hosts in N2 can join any multicast
groups.