Users Guide

CONFIGURATION mode
ip igmp snooping enable
● View the configuration.
CONFIGURATION mode
show running-config
● Disable snooping on a VLAN.
INTERFACE VLAN mode
no ip igmp snooping
Related Configuration Tasks
● Removing a Group-Port Association
● Disabling Multicast Flooding
● Specifying a Port as Connected to a Multicast Router
● Configuring the Switch as Querier
DellEMC(conf)#ip igmp snooping enable
DellEMC(conf)#do show running-config igmp
ip igmp snooping enable
DellEMC(conf)#
Removing a Group-Port Association
To configure or view the remove a group-port association feature, use the following commands.
● Configure the switch to remove a group-port association after receiving an IGMP Leave message.
INTERFACE VLAN mode
ip igmp fast-leave
● View the configuration.
INTERFACE VLAN mode
show config
DellEMC(conf-if-vl-100)#show config
!
interface Vlan 100
no ip address
ip igmp snooping fast-leave
shutdown
DellEMC(conf-if-vl-100)#
Disabling Multicast Flooding
If the switch receives a multicast packet that has an IP address of a group it has not learned (unregistered frame), the switch
floods that packet out of all ports on the VLAN.
When you configure the no ip igmp snooping flood command, the system drops the packets immediately. The system
does not forward the frames on mrouter ports, even if they are present. Disable Layer 3 multicast (no ip multicast-
routing) in order to disable multicast flooding.
● Configure the switch to only forward unregistered packets to ports on a VLAN that are connected to mrouter ports.
CONFIGURATION mode
no ip igmp snooping flood
Specifying a Port as Connected to a Multicast Router
To statically specify or view a port in a VLAN, use the following commands.
Internet Group Management Protocol (IGMP)
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