Layer 2 Switching Commands 290mac address-table multicast forbidden addressUse the mac address-table multicast forbidden address command in GlobalConfiguration mode to forbid adding a specific Multicast address to specificports. To return to the system default, use the no form of this command. Ifrouters exist on the VLAN, do not change the unregistered multicastaddresses state to drop on the routers ports.Syntaxmac address-table multicast forbidden address vlan vlan-id {mac-multicast-address | ip-multicast-address} {add | remove} interface interface-listno mac address-table multicast forbidden address vlan vlan-id {mac-multicast-address | ip-multicast-address}• add—Adds ports to the group.• remove—Removes ports from the group.• vlan vlan-id —A valid vlan-id. (Range 1-4093)• mac-multicast-address—MAC Multicast address in the formatxxxx.xxxx.xxxx.• ip-multicast-address — IP Multicast address.• interface-list — Specify a comma separated list of interface identifiers, a range ofinterfaces, or a combination of both. Interface identifiers can be port channelinterface identifiers or Ethernet interface identifiers. Embedded blanks arenot allowed in the list.Default ConfigurationNo forbidden addresses are defined.Command ModeGlobal Configuration modeUser GuidelinesBefore defining forbidden ports, ensure that the multicast group is registered.
