Specifications

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
mab
mab
To enable and configure MAC authorizat ion bypass (MA B) on a po rt, use the mab command in interface
configuration mode. To disable MAB , use the no form of this command.
mab [eap]
no mab [eap]
Note The mab command is totally independent of the effect of the dot1x system-auth control command.
Syntax Description
Command Default Disabled
Command Modes Interface configuration mode
Usage Guidelines W hen a port is configured f or MAB as a fallback method, it oper ates in a typical dot1X me thod until a
configurable number of failed attempts to request the identity of the host. The authenticator learns the
MAC address of the host and uses that information to query an authentication server to see whether this
MAC address will be granted access.
Examples The following example shows how to enable MAB on a port:
Switch(config-if)# mab
Switch(config-if)#
The following example shows how to en able and configure MAB on a port:
Switch(config-if)# mab eap
Switch(config-if)#
The following example shows how to disa ble MAB on a port:
Switch(config-if)# no mab
Switch(config-if)#
Related Commands
eap (Optiona l) Specifies that a full EAP conversation should be us ed, as opposed to
standard RADIUS Access-Reque st, Access-Acce pt conversation.
Command Description
show authentication Displays Authentication Manager information.
show mab Displays MAB information.
show running-conf ig Displays the running configuration infor mation.