Assigning A Path Cost; Adjusting Bpdu Intervals - Cisco WS-CBS3032-DEL Software Configuration Manual

Configuring Fallback Bridging

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.
Command
Step 1 configure terminal
Step 2 interface interface-id
Step 3 bridge-group bridge-group path-cost
cost
Step 4 end
Step 5
show running-config
Step 6 copy running-config startup-config
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

Adjusting BPDU Intervals

You can adjust BPDU intervals as described in these sections:
•
•
•
Note Each switch in a spanning tree adopts the interval between hello BPDUs, the forward delay interval, and
the maximum idle interval parameters of the root switch, regardless of what its individual configuration
might be.
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
47-8
Adjusting the Interval between Hello BPDUs, page 47-9
Changing the Forward-Delay Interval, page 47-9
Changing the Maximum-Idle Interval, page 47-10
Purpose
Enter global configuration mode.
Specify the port to set the path cost, and enter interface configuration
mode.
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.
–
Return to privileged EXEC mode.
Verify your entry.
(Optional) Save your entry in the configuration file.
(optional)
(optional)
Chapter 47 Configuring Fallback Bridging
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