Cisco Catalyst 3550 Command Reference Manual page 446

spanning-tree loopguard default
Related Commands Command
show running-config
spanning-tree guard
Catalyst 3550 Multilayer Switch Command Reference
2-420
Description
Displays the current operating configuration. For syntax information,
select Cisco IOS Configuration Fundamentals Command Reference
for Release 12.1 > Cisco IOS File Management Commands >
Configuration File Commands.
loop Enables the loop guard feature on all the VLANs associated with the
specified interface.
Chapter 2 Cisco IOS Commands
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