AT-9000 Switch Command Line User’s Guide
Section VI: Spanning Tree Protocols 539
SPANNING-TREE GUARD ROOT
Syntax
spanning-tree guard root
Parameters
None.
Mode
Global Configuration mode
Description
Use this command to enable the BPDU guard feature so that the switch
monitors edge ports and disables them if they receive BPDU packets.
Note
To enable an edge port that was disabled by the BPDU guard
feature, use the NO SHUTDOWN command. For instructions, refer
to “NO SHUTDOWN” on page 177. If a port is still receiving BPDUs,
the switch will disable it again unless you disconnect the network
cable.
Confirmation Command
“SHOW RUNNING-CONFIG” on page 129
Example
awplus> enable
awplus# configure terminal
awplus(config)# spanning-tree guard root
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