Chapter 24
| Multicast Filtering Commands
IGMP (Layer 3)
ā 774 ā
ip igmp version This command configures the IGMP version used on an interface. Use the no form
of this command to restore the default.
Syntax
ip igmp version {1 | 2 | 3}
no ip igmp version
1 - IGMP Version 1
2 - IGMP Version 2
3 - IGMP Version 3
Default Setting
IGMP Version 2
Command Mode
Interface Configuration (VLAN)
Command Usage
ā All routers on the subnet must support the same version. However, the
multicast hosts on the subnet may support any of the IGMP versions 1 - 3.
ā If the switch receives an IGMP Version 1 Membership Report, it sets a timer to
note that there are Version 1 hosts which are members of the group for which it
heard the report.
If there are Version 1 hosts present for a particular group, the switch will ignore
any Leave Group messages that it receives for that group.
Example
Console(config-if)#ip igmp version 1
Console(config-if)#
clear ip igmp group This command deletes entries from the IGMP cache.
Syntax
clear ip igmp group [group-address | interface interface]
group-address - IP address of the multicast group.
interface
vlan vlan-id - VLAN ID. (Range: 1-4094)
Default Setting
Deletes all entries in the cache if no options are selected.
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