Chapter 22
| Multicast Filtering Commands
IGMP (Layer 3)
– 636 –
The following shows the information displayed in a detailed listing for a
dynamically learned multicast group.
Console#show ip igmp groups detail
Interface : VLAN 1
Group : 224.1.2.3
Uptime : 0h:0m:12s
Group mode : Include
Last reporter : 0.0.0.0
Group Source List:
Source Address Uptime v3 Exp Fwd
--------------- ----------- ----------- ---
192.1.2.3 0h:0m:12s 0h:0m:0s Yes
Console#
Table 125: show ip igmp groups - display description
Field Description
Group Address IP multicast group address with subscribers directly attached or
downstream from the switch.
Interface VLAN The interface on the switch that has received traffic directed to the
multicast group address.
Last Reporter The IP address of the source of the last membership report received for
this multicast group address on this interface.
Uptime The time elapsed since this entry was created.
Expire The time remaining before this entry will be aged out. (The default is
260 seconds.)
This field displays “stopped” if the Group Mode is INCLUDE.
V1 Timer The time remaining until the switch assumes that there are no longer
any IGMP Version 1 members on the IP subnet attached to this
interface.
◆
If the switch receives an IGMP Version 1 Membership Report, it
sets a timer to note that there are Version 1 hosts present 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.
Table 126: show ip igmp groups detail - display description
Field Description
Interface The interface on the switch that has received traffic directed to the
multicast group address.
Group IP multicast group address with subscribers directly attached or
downstream from the switch, or a static multicast group assigned to
this interface.
Uptime The time elapsed since this entry was created.
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