Setup Guide

Table Of Contents
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.
Statically specify a port in a VLAN as connected to a multicast router.
INTERFACE VLAN mode
ip igmp snooping mrouter
View the ports that are connected to multicast routers.
EXEC Privilege mode.
Internet Group Management Protocol (IGMP)
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