Consolidated Platform Configuration Guide, Cisco Ios Release 15.2(4)E (Catalyst 2960-X Switches - Cisco Catalyst 2960 series Configuration Manual

• To enable MAB for an existing large database that uses formatted username attributes, the username
format in the client MAC needs to be configured. Use the mab request format attribute 1 command
to configure the username format.
• Some databases do not accept authentication if the username and password values are the same. In such
instances, the password needs to be configured to ensure that the password is different from the username.
Use the mab request format attribute 2 command to configure the password.
The Configurable MAB Username and Password feature allows interoperability between the Cisco IOS
Authentication Manager and the existing MAC databases and RADIUS servers. The password is a global
password and hence is the same for all MAB authentications and interfaces. This password is also synchronized
across all supervisor devices to achieve high availability.
If the password is not provided or configured, the password uses the same value as the username. The table
below describes the formatting of the username and the password:
MAC Address Username Format
(Group Size,
Separator)
08002b8619de (1, :)
(1, -)
(1, .)
08002b8619de (1, :)
(1, -)
(1, .)
08002b8619de (2, :)
(2, -)
(2, .)
08002b8619de (2, :)
(2, -)
(2, .)
08002b8619de (4, :)
(4, -)
(4, .)
08002b8619de (4, :)
(4, -)
(4, .)
08002b8619de (12, <not
applicable>)

Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)

Information About MAC Authentication Bypass
Username Password
Configured
0:8:0:0:2:b:8:6:1:9:d:e None
0-8-0-0-2-b-8-6-1-9-d-e
0.8.0.0.2.b.8.6.1.9.d.e
0:8:0:0:2:b:8:6:1:9:d:e Password
0-8-0-0-2-b-8-6-1-9-d-e
0.8.0.0.2.b.8.6.1.9.d.e
08:00:2b:86:19:de None
08-00-2b-86-19-de
08.00.2b.86.19.de
08:00:2b:86:19:de Password
08-00-2b-86-19-de
08.00.2b.86.19.de
0800:2b86:19de None
0800-2b86-19de
0800.2b86.19de
0800:2b86:19de Password
0800-2b86-19de
0800.2b86.19de
08002b8619de None
Password Created
0:8:0:0:2:b:8:6:1:9:d:e
0-8-0-0-2-b-8-6-1-9-d-e
0.8.0.0.2.b.8.6.1.9.d.e
Password
08:00:2b:86:19:de
08-00-2b-86-19-de
08.00.2b.86.19.de
Password
0800:2b86:19de
0800-2b86-19de
0800.2b86.19de
Password
08002b8619de
1043