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bridge multicast forbidden forward-all
The bridge multicast forbidden forward-all Interface Configuration (VLAN) mode command forbids a port to be
a forward-all-multicast port. To restore the default configuration, use the no form of this command.
Syntax
bridge multicast forbidden forward-all {add | remove} {ethernet interface-list | port-channel port-channel-
number-list}
no bridge multicast forbidden forward-all
Parameters
•
add — Forbids forwarding all multicast packets.
•
remove — Does not forbid forwarding all multicast packets.
•
interface-list — Separates nonconsecutive Ethernet ports with a comma and no spaces; a hyphen is used to
designate a range of ports.
•
port-channel-number-list — Separates nonconsecutive port-channels with a comma and no spaces; a
hyphen is used to designate a range of port-channels.
Default Configuration
This setting is disabled.
Command Mode
Interface Configuration (VLAN) mode
User Guidelines
IGMP snooping dynamically discovers multicast router ports. When a multicast router port is discovered, all the
multicast packets are forwarded to it unconditionally.
This command prevents a port from becoming a multicast router port.
Example
In this example, forwarding all multicast packets to port 1 with VLAN 2 is forbidden.
Console(config)# interface vlan 2
Console(config-if)# bridge multicast forbidden forward-all add ethernet 1
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Address Table Commands
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