Chapter 24
| Multicast Filtering Commands
IGMP (Layer 3)
– 777 –
show ip igmp
interface
This command shows multicast information for the specified interface.
Syntax
show ip igmp interface [interface]
interface
vlan vlan-id - VLAN ID. (Range: 1-4094)
Default Setting
None
Command Mode
Privileged Exec
Example
The following example shows the IGMP configuration for VLAN 1, as well as the
device currently serving as the IGMP querier for active multicast services on this
interface.
switch#show ip igmp interface vlan 1
Vlan 1 : up
IGMP : Disabled
IGMP Version : 2
IGMP Proxy : Enabled
IGMP Unsolicited-report-interval : 400 sec
Robustness variable : 2
Uptime The time elapsed since this entry was created.
Group mode In INCLUDE mode, reception of packets sent to the specified multicast
address is requested only from those IP source addresses listed in the
source-list parameter. In EXCLUDE mode, reception of packets sent to
the given multicast address is requested from all IP source addresses
except for those listed in the source-list parameter, and where the
source timer status has expired. Note that EXCLUDE mode does not
apply to SSM addresses.
Last Reporter The IP address of the source of the last membership report received for
this multicast group address on this interface.
Group Source List A list of zero or more IP unicast addresses from which multicast
reception is desired or not desired, depending on the filter mode.
Source Address The address of one of the multicast servers transmitting traffic to the
specified group.
Uptime The time elapsed since this entry was created.
v3 Exp The time remaining before this entry will be aged out. The V3 label
indicates that the expire time is only provided for sources learned
through IGMP Version 3. (The default is 260 seconds.)
Fwd Indicates whether or not traffic will be forwarded from the multicast
source.
Table 154: show ip igmp groups detail - display description (Continued)
Field Description
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