Cisco Systems 3550 Changing the Maximum-Idle Interval

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Catalyst 3550 Multilayer Switch Software Configuration Guide
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Chapter26 Configuring Fallback Bri dging Configuring Fallback Bridging
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 interv al to 1 0 s econd s i n brid ge g rou p 1 0:
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):
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 t o 30 sec on ds in bri dge g rou p 1 0:
Switch(config)# bridge 10 max-age 30
Step3 end Return to privileged EXEC mode.
Step4 show running-config Verify your entry.
Step5 copy running-config startup-config (Optional) Save your entry in the configuration file.
Command Purpose
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 bridge bridge-group max-age seconds 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 defa ult is 30
seconds.
Step3 end Return to privileged EXEC mode.
Step4 show running-config Verify your entry.
Step5 copy running-config startup-config (Optional) Save your entry in the configuration file.