Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

authentication violationChapter 2Catalyst 3750-E and 3560-E Switch Cisco IOS Commandsauthentication violationUse the authentication violation interface configuration command to configure the violation modes thatoccur when a new device connects to a port or when a new device connects to a port after the maximumnumber of devices are connected to that port.authentication violation {protect | replace | restrict | shutdown}no authentication violation {protect | replace | restrict | shutdown}Syntax DescriptionprotectreplacerestrictshutdownUnexpected incoming MAC addresses are dropped. No syslog errors aregenerated.Removes the current session and initiates authentication with the new host.Generates a syslog error when a violation error occurs.Error disables the port or the virtual port on which an unexpected MACaddress occurs.DefaultsBy default authentication violation shutdown mode is enabled.Command ModesInterface configurationCommand HistoryRelease12.2(50)SE12.2(55)SEModificationThis command was introduced.The replace keyword was added.ExamplesThis example shows how to configure an IEEE 802.1x-enabled port as error disabled and to shut downwhen a new device connects it:Switch(config-if)# authentication violation shutdownThis example shows how to configure an IEEE 802.1x-enabled port to generate a system error messageand to change the port to restricted mode when a new device connects to it:Switch(config-if)# authentication violation restrictThis example shows how to configure an IEEE 802.1x-enabled port to ignore a new device when itconnects to the port:Switch(config-if)# authentication violation protectThis example shows how to configure an IEEE 802.1x-enabled port to remove the current session andinitiate authentication with a new device when it connects to the port:Switch(config-if)# authentication violation replaceYou can verify your settings by entering the show authentication privileged EXEC command.2-48Catalyst 3750-E and 3560-E Switch Command ReferenceOL-9776-08