Administrator Guide

Table Of Contents
Layer 2 Switching Commands 291
mac address-table multicast forbidden address
Use the mac address-table multicast forbidden address command in Global
Configuration mode to forbid adding a specific Multicast address to specific
ports. To return to the system default, use the no form of this command. If
routers exist on the VLAN, do not change the unregistered multicast
addresses state to
drop
on the routers ports.
Syntax
mac address-table multicast forbidden address vlan
vlan-id
{
mac-multicast-
address
|
ip-multicast-address
} {add | remove} interface
interface-list
no mac address-table multicast forbidden address vlan
vlan-id
{
mac-
multicast-address
|
ip-multicast-address
}
add
Adds ports to the group. If no option is specified, this is the default
option.
remove
Removes ports from the group.
vlan
vlan-id
A valid vlan-id. (Range 1-4093)
mac-multicast-address
—MAC Multicast address
in the format
xxxx.xxxx.xxxx.
ip-multicast-address
IP Multicast address.
interface-list
Specify a comma separated list of interface identifiers, a range of
interfaces, or a combination of both. Interface identifiers can be
port channel
interface identifiers or Ethernet interface identifiers. Embedded blanks are
not allowed in the list.
Default Configuration
No forbidden addresses are defined.
Command Mode
Global Configuration mode
User Guidelines
Before defining forbidden ports, ensure that the multicast group is registered.
2CSNXXX_SWUM204.book Page 291 Monday, January 25, 2016 1:25 PM