Cisco Systems 3750E Manual De Usuario

44-8

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

OL-9775-02

Chapter 44 Configuring Fallback Bridging

Configuring Fallback Bridging

To return to the default setting, use the no bridge-group bridge-group priority interface configuration
command.

This example shows how to change the priority to 20 on a port in bridge group 10:

Switch(config)# interface gigabitethernet2/0/1

Switch(config-if)# bridge-group 10 priority 20

Assigning a Path Cost

Each port has a path cost associated with it. By convention, the path cost is 1000/data rate of the attached
LAN, in Mb/s.

Beginning in privileged EXEC mode, follow these steps to assign a path cost. This procedure is optional.

To return to the default path cost, use the no bridge-group bridge-group path-cost interface
configuration command.

This example shows how to change the path cost to 20 on a port in bridge group 10:

Switch(config)# interface gigabitethernet2/0/1

Switch(config-if)# bridge-group 10 path-cost 20

Step 5

show running-config

Verify your entry.

Step 6

copy running-config startup-config

(Optional) Save your entry in the configuration file.

Command

Purpose

Command

Purpose

Step 1

configure terminal

Enter global configuration mode.

Step 2

interface interface-id

Specify the port to set the path cost, and enter interface configuration
mode.

Step 3

bridge-group bridge-group path-cost
cost

Assign the path cost of a port.

•

For bridge-group, specify the bridge group number. The range is 1
to 255.

•

For cost, enter a number from 0 to 65535. The higher the value, the
higher the cost.

–

For 10 Mb/s, the default path cost is 100.

–

For 100 Mb/s, the default path cost is 19.

–

For 1000 Mb/s, the default path cost is 4.

Step 4

end

Return to privileged EXEC mode.