Quick Reference Guide

Address Table Commands 119
DELL CONFIDENTIAL – PRELIMINARY 5/15/12 – FOR PROOF ONLY
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. Use the no form of this command to restore the
default configuration.
Syntax
• bridge multicast forbidden forward-all { add | remove } { ethernet interface-list | port-
channel
port-channel-number-list }
•
no bridge multicast forbidden forward-all
• add — Forbids forwarding all Multicast packets.
•
remove — Does not forbid forwarding all Multicast packets.
•
interface-list — Separates non-consecutive Ethernet ports with a comma and no spaces; a
hyphen is used to designate a range of ports.
•
port-channel-number-list — Separates non-consecutive 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
The following example forbids forwarding all Multicast packets to 1/e1 with VLAN 2.
Console(config)# interface vlan 2
Console(config-if)# bridge multicast forbidden forward-all add
ethernet 1/e1