Spanning Tree Commands
©2008 Allied Telesis Inc. All rights reserved.
19.28
AlliedWare Plus
TM
Operating System Software Reference C613-50003-00 REV E
Software Version 5.2.1
spanning-tree guard root
Use this command to enable the Root Guard feature for the port. The root guard feature
disables reception of superior BPDUs.
Use this command for RSTP, STP or MSTP.
Use the
no
parameter with this command to disable the root guard feature for the port.
Syntax
spanning-tree guard root
no spanning-tree guard root
Mode
Interface mode
Usage
The Root Guard feature makes sure that the port on which it is enabled is a designated port. If
the Root Guard enabled port receives a superior BPDU, it goes to a Listening state (for STP)
or discarding state (for RSTP and MSTP).
Example
awplus#
configure terminal
awplus(config)#
interface port1.1.2
awplus(config-if)#
spanning-tree guard root