R21xx-HP FlexFabric 11900 IP Multicast Configuration Guide

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Displaying and maintaining IGMP
CAUTION:
The reset igmp group command might cause multicast data transmission failures.
Execute display commands in any view and reset command in user view.
Task Command
Display IGMP group information.
display igmp group [ group-address | interface interface-type
interface-number ] [ static | verbose ]
Display IGMP information. display igmp interface [ interface-type interface-number ] [ verbose ]
Remove all the dynamic IGMP
group entries of a specified IGMP
group or all IGMP groups.
reset igmp group { all | interface interface-type interface-number { all |
group-address [ mask { mask | mask-length } ] [ source-address [ mask
{ mask | mask-length } ] ] } }
NOTE:
The reset igmp group command cannot remove static IGMP group entries.
IGMP configuration examples
Network requirements
VOD streams are sent to receiver hosts in multicast. Receiver hosts of different organizations form stub
networks N1 and N2. Host A and Host C are receiver hosts in N1 and N2, respectively.
IGMPv2 runs between Switch A and N1, and between the other two switches and N2. Switch A acts as
the IGMP querier in N1. Switch B acts as the IGMP querier in N2 because it has a lower IP address.
The hosts in N1 can join only the multicast group 224.1.1.1. The hosts in N2 can join any multicast groups.