Administrator Guide

Layer 2 Switching Commands 763
spanning-tree forward-time
Use the spanning-tree forward-time command in Global Configuration
mode to configure the spanning-tree bridge forward time, which is the
amount of time a port remains in the listening and learning states before
entering the forwarding state.
To reset the default forward time, use the no form of this command.
Syntax
spanning-tree forward-time seconds
no spanning-tree forward-time
• seconds — Time in seconds. (Range: 4–30)
Default Configuration
The default forwarding-time for IEEE Spanning-tree Protocol (STP) is 15
seconds.
Command Mode
Global Configuration mode.
User Guidelines
When configuring the Forward-Time the following relationship should be
satisfied:
2*(Forward-Time - 1) >= Max-Age.
Example
The following example configures spanning-tree bridge forward time to 25
seconds.
console(config)#spanning-tree forward-time 25