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CertExams.com Simulator Lab Exercises Answers

Configuring STP timers

Description: This lab exercise demonstrates configuring spanning-tree protocol timers.

Instructions:

1. Enter into configuration mode on SW1

2. Use the command “set stp hello-time/forward-time/max-age <value>” to configure the various STP timers on the switch

3. Verify the configuration using show configuration command.


user@SW1>configure
[edit]
user@SW1#edit protocols
[edit protocols]
user@SW1#set stp forward-delay 20
[edit protocols]
user@SW1#set stp hello-time 5
[edit protocols]
user@SW1#set stp max-age 30
[edit protocols]
user@SW1#exit
[edit]
user@SW1#commit
[edit]
user@SW1#exit
user@SW1>show configuration

Note: i. Hello-Time: Determines how often the switch broadcasts hello messages to other switches.  
ii. Forward-Time: Determines how long each of the listening and learning states last before the interface begins forwarding.  
iii. Max-Age: Determines the amount of time the switch stores protocol information received on an interface.

 

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