Spanning-Tree Guard Root - Allied Telesis SwitchBlade x908 Series Software Reference Manual

Spanning Tree Commands

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
Interface mode
Mode
The Root Guard feature makes sure that the port on which it is enabled is a designated port. If
Usage
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(config-if)#
19.30
awplus# configure terminal
awplus(config)# interface port1.1.2
spanning-tree guard root
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1 C613-50007-01 REV B