Black Box LGB6026A, Management Manual

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C
HAPTER
41 | Multicast Filtering Commands
IGMP (Layer 3)
C
OMMAND
M
ODE
Privileged Exec
C
OMMAND
U
SAGE
Enter the address for a multicast group to delete all entries for the
specified group. Enter the interface option to delete all multicast groups for
the specified interface. Enter no options to clear all multicast groups from
the cache.
E
XAMPLE
The following example clears all multicast group entries for VLAN 1.
Console#clear ip igmp interface vlan1
Console#
show ip igmp
groups
This command displays information on multicast groups active on the
switch and learned through IGMP.
S
YNTAX
show ip igmp groups [{ group-address | interface } [ detail ] | detail ]
group-address - IP multicast group address.
interface
vlan vlan-id - VLAN ID. (Range: 1-4093)
detail - Displays detailed information about the multicast process
and source addresses when available.
C
OMMAND
M
ODE
Privileged Exec
C
OMMAND
U
SAGE
To display information about multicast groups, IGMP must first be enabled
on the interface to which a group has been assigned using the
ip igmp
command, and multicast routing must be enabled globally on the system
using the
ip multicast-routing command.
E
XAMPLE
The following shows options for displaying IGMP group information by
interface, group address, and static listing.
Console#show ip igmp groups
GroupAddress
InterfaceVlan Lastreporter Uptime Expire V1Timer
--------------- --------------- --------------- -------- -------- --------
224.0.17.17 1 192.168.1.10 0:0:1 0:4:19 0:0:0
Console#show ip igmp groups 234.5.6.8
GroupAddress
InterfaceVlan Lastreporter Uptime Expire V1Timer
--------------- --------------- --------------- -------- -------- --------
224.0.17.17 1 192.168.1.10 0:0:1 0:4:19 0:0:0