Dell POWEREDGE M1000E - Manual (Page 829)

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Cisco Catalyst Blade Switch 3120 for HP Command Reference
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Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands
switchport protected
Related Commands Command Description
show interfaces
switchport
Displays the administrative and operational status of a switching (nonrouting)
port, including port blocking and port protection settings.
switchport block Prevents unknown multicast or unicast traffic on the interface.