C613-50631-01 Rev A Command Reference for IE340 Series 742
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
SPANNING TREE COMMANDS
SPANNING
-TREE GUARD ROOT
spanning-tree guard root
Overview Use this command in Interface Configuration mode for a switch port only to enable
the Root Guard feature for the switch port. The root guard feature disables
reception of superior BPDUs. You can use this command for RSTP, STP or MSTP.
Use the no variant of this command to disable the root guard feature for the port.
Syntax
spanning-tree guard root
no spanning-tree guard root
Mode Interface Configuration mode for a switch port interface only.
Usage notes 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 port1.0.2
awplus(config-if)# spanning-tree guard root
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