CLI Reference Guide

468 Spanning Tree Commands
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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
spanning-tree mode
Use the spanning-tree mode command in Global Configuration mode to configure the spanning-
tree protocol. To return to the default configuration, use the
no form of this command.
Syntax
spanning-tree mode { stp | rstp |mstp }
no spanning-tree mode
• stp —Spanning Tree Protocol (STP) is enabled.
•
rstp —Rapid Spanning Tree Protocol (RSTP) is enabled.
•
mstp —Multiple Spanning Tree Protocol (MSTP) is enabled.