C
HAPTER
39
| Multicast Filtering Commands
IGMP (Layer 3)
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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
◆ 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.
◆ 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: 1-4093)
DEFAULT SETTING
Deletes all entries in the cache if no options are selected.
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