CLI Reference Guide-R02

Chapter 23 | Multicast Filtering Commands
IGMP Snooping
– 659 –
2006). If proxy reporting is enabled (see ip igmp snooping proxy-reporting),
report suppression will still be enabled, regardless of the configuration setting
for the report suppression command.
◆ IGMP reports are relayed to the router port only when necessary; that is, when
the first user joins a multicast group, and once only per multicast group in
response to an IGMP query.
◆ When report suppression and proxy reporting are both disabled, all IGMP
reports received by the switch are forwarded natively to the upstream multicast
routers.
Example
Console(config)#ip igmp snooping vlan 1 report-suppression enable
Console(config)#
ip igmp snooping vlan
static
This command adds a port to a multicast group. Use the no form to remove the
port.
Syntax
[no] ip igmp snooping vlan vlan-id static ip-address interface
vlan-id - VLAN ID (Range: 1-4094)
ip-address - IP address for multicast group
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-18)
port-channel channel-id (Range: 1-12)
uplink - specifies an
Default Setting
None
Command Mode
Global Configuration
Command Usage
◆ Static multicast entries are never aged out.
◆ When a multicast entry is assigned to an interface in a specific VLAN, the
corresponding traffic can only be forwarded to ports within that VLAN.