Cisco HWIC-4ESW - Preventing the Forwarding of Dynamically Learned Stations

Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
How to Configure EtherSwitch HWICs
75
Book Title
To remove a bridge group, use the no bridge bridge-group protocol vlan-bridge global configuration
command. To remove an interface from a bridge group, use the no bridge-group bridge-group interface
configuration command.
Preventing the Forwarding of Dynamically Learned Stations
By default, the switch forwards any frames for stations that it has dynamically learned. When this
activity is disabled , the switch only forwards frames whose addresses have been statically configured
into the forwarding cache.
Follow the steps below to prevent the switch from forwarding frames for stations that it has dynamically
learned.
SUMMARY STEPS
1. enable
2. configure terminal
3. no bridge bridge-group acquire
Step 5
interface interface-id
Example:
Router(config)# interface 0/3/1
Enters interface configuration mode and specifies the interface on
which you want to assign the bridge group.
• The specified interface must be an SVI: a VLAN interface that you
created by using the interface vlan vlan-id global configuration
command.
• These ports must have IP addresses assigned to them.
Step 6
bridge-group bridge-group
Example:
Router(config-if)# bridge-group 100
Assigns the interface to the bridge group created in Step 2.
• By default, the interface is not assigned to any bridge group. An
interface can be assigned to only one bridge group.
Step 7
end
Example:
Router(config-if)# end
Returns to privileged EXEC mode.
Step 8
show vlan-bridge
Example:
Router# show vlan-bridge
(Optional) Verifies forwarding mode.
Step 9
show running-config
Example:
Router# show running-config
(Optional) Verifies your entries.
Step 10
copy running-config startup-config
Example:
Router# copy running-config
startup-config
(Optional) Saves your entries in the configuration file.
Command Purpose