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IGMP Snooping 41
IGMP Snooping
This section describes the Internet Group Management Protocol (IGMP) feature: IGMPv3 and
IGMP Snooping.
Overview
IGMP:
z Uses Version 3 of IGMP
z Includes snooping
z Snooping can be enabled per VLAN
CLI Examples
The following are examples of the commands used in the IGMP Snooping feature.
Example #1: show igmpsnooping
(Console) #show igmpsnooping?
<cr> Press Enter to execute the command.
<slot/port> Enter interface in slot/port format.
mrouter Display IGMP Snooping Multicast Router information.
<1-4093> Display IGMP Snooping valid VLAN ID information.
(Console) #show igmpsnooping
Admin Mode...............................Enable
Multicast Control Frame Count............0
Interfaces Enabled for IGMP Snooping.....0/10
Vlans enabled for IGMP snooping..........20
Example #2: show mac-address-table igmpsnooping
(Console) #show ip igmp interface?
MAC Address TypeDescriptionInterfaces
----------------------- --------------------------------
00:01:01:00:5E:00:01:16 DynamicNetwork AssistFwd: 0/47
00:01:01:00:5E:00:01:18 DynamicNetwork AssistFwd: 0/47
00:01:01:00:5E:37:96:D0 DynamicNetwork AssistFwd: 0/47
00:01:01:00:5E:7F:FF:FA DynamicNetwork AssistFwd: 0/47
00:01:01:00:5E:7F:FF:FE DynamicNetwork AssistFwd: 0/47