Installation guide

Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
How to Configure EtherSwitch HWICs
54
Cisco IOS Release 12.3(8)T4
OL-6454-01
Changing the Switch Priority
You can globally configure the priority of an individual switch when two switches tie for position as the
root switch, or you can configure the likelihood that a switch will be selected as the root switch. This
priority is determined by default; however, you can change it.
Beginning in privileged EXEC mode, follow these steps to change the switch priority.
SUMMARY STEPS
1. configure terminal
2. bridge bridge-group priority number
3. end
4. show running-config
5. copy running-config startup-config
DETAILED STEPS
No no form of this command exists. To return to the default setting, use the bridge bridge-group
priority number global configuration command, and set the priority to the default value. To change the
priority on an interface, use the bridge-group priority interface configuration command (described in
the next section).
Changing the Interface Priority
You can change the priority for an interface. When two switches tie for position as the root switch, you
configure an interface priority to break the tie. The switch with the lowest interface value is elected.
Beginning in privileged EXEC mode, follow these steps to change the interface priority.
SUMMARY STEPS
1. configure terminal
2. interface interface-id
3. bridge-group bridge-group priority number
Command Purpose
Step 1
configure terminal
Enters global configuration mode.
Step 2
bridge bridge-group priority number
Changes the priority of the switch.
• For bridge-group, specify the bridge group number. The range is 1
to 255.
• For number, enter a number from 0 to 65535. The default is 32768.
The lower the number, the more likely the switch will be chosen as
the root.
Step 3
end
Returns to privileged EXEC mode.
Step 4
show running-config
Verifies your entry.
Step 5
copy running-config startup-config
(Optional) Saves your entry in the configuration file.