Spanning-Tree Forward-Time - Dell PowerEdge M420 Reference Manual

Example
The following example disables spanning-tree on 1/0/5.
console(config)#interface gigabitethernet 1/0/5
console(config-if-1/0/5)#spanning-tree disable

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
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
694
Spanning Tree Commands
seconds