102
To do... Use the command...
Remove all the dynamic Layer 2 port
entries of a specified IGMP group or
all IGMP groups
reset igmp group port-info { all | group-address
} [ vlan vlan-id ]
Available in user
view
Clear IGMP SSM mappings
reset igmp [ all-instance | vpn-instance vpn-
instance-name ] ssm-mapping group { all |
interface interface-type interface-number { all |
group-address [ mask { mask | mask-length } ] [
source-address [ mask { mask | mask-length } ] ]
} }
Available in user
view
NOTE:
The reset igmp group command cannot remove static IGMP group entries.
The reset igmp group port-info command cannot remove the static Layer 2 port entries of IGMP
groups.
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 devices 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 devices
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.
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