DELL PC6224F User Manual

Spanning Tree Commands

The spanning-tree guard command selects whether loop guard or root guard 

is enabled on an interface. If neither is enabled, the port operates in 

accordance with the multiple spanning tree protocol. Use the “no” form of 

this command to disable loop guard or root guard on the interface.

spanning-tree guard {root | loop | none}

• root — Enables root guard.
•

loop — Enables loop guard

• none — Disables root and loop guard.

Neither root nor loop guard is enabled.

Interface Configuration (Ethernet, Port Channel) mode.

There are no user guidelines for this command.

The following example disables spanning-tree guard functionality on ethernet 

interface 4/g1.

console#config

console(config)#interface ethernet 4/g1

console(config-if-4/g1)#spanning-tree guard none

Use the spanning-tree loopguard command to enable loop guard on all ports. 

Use the “no” form of this command to disable loop guard on all ports.