Administrator Guide

Layer 2 Switching Commands 770
Example
The following example enables spanning-tree loopguard functionality on all
ports.
console(config)#spanning-tree loopguard default
spanning-tree max-age
Use the spanning-tree max-age command in Global Configuration mode to
configure the spanning-tree bridge maximum age. To reset the default
maximum age, use the no form of this command.
Syntax
spanning-tree max-age seconds
no spanning-tree max-age
• seconds -Time in seconds. (Range: 6–40)
Default Configuration
The default max-age for IEEE STP is 20 seconds.
Command Mode
Global Configuration mode
User Guidelines
When configuring the Max-Age the following relationships should be
satisfied:
2*(Forward-Time - 1) >= Max-Age
Max-Age >= 2*(Hello-Time + 1)
Example
The following example configures the spanning-tree bridge maximum-age to
10 seconds.
console(config)#spanning-tree max-age 10
2CSNXXX_SWUM204.book Page 770 Monday, January 25, 2016 1:25 PM