Cisco WS-C3550-12G Software Configuration Manual page 697

Chapter 26 Configuring Fallback Bridging
Command
Step 3 end
Step 4
show running-config
Step 5 copy running-config startup-config
To return to the default setting, use the no bridge bridge-group forward-time seconds global
configuration command.
This example shows how to change the forward-delay interval to 10 seconds in bridge group 10:
Switch(config)# bridge 10 forward-time 10
Changing the Maximum-Idle Interval
If a switch does not hear BPDUs from the root switch within a specified interval, it recomputes the
spanning-tree topology.
Beginning in privileged EXEC mode, follow these steps to change the maximum-idle interval
(maximum aging time):
Command
Step 1 configure terminal
Step 2
bridge bridge-group max-age seconds
Step 3
end
Step 4
show running-config
Step 5 copy running-config startup-config
To return to the default setting, use the no bridge bridge-group max-age global configuration command.
This example shows how to change the maximum-idle interval to 30 seconds in bridge group 10:
Switch(config)# bridge 10 max-age 30
78-11194-03
Purpose
Return to privileged EXEC mode.
Verify your entry.
(Optional) Save your entry in the configuration file.
Purpose
Enter global configuration mode.
Specify the interval the switch waits to hear BPDUs from the root
switch.
• For bridge-group, specify the bridge group number. The range is 1
to 255.
For seconds, enter a number from 10 to 200. The default is 30
•
seconds.
Return to privileged EXEC mode.
Verify your entry.
(Optional) Save your entry in the configuration file.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring Fallback Bridging
26-11