Cisco CATALYST 2960 - Page 593

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Catalyst 2960 Switch Command Reference
OL-8604-03
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
switchport protected
Syntax Description Command Description
show interfaces
switchport
Displays the administrative and operational status of a switching port, including
port blocking and port protection settings.
switchport block Prevents unknown multicast or unicast traffic on the interface.