Administrator Guide

Security Commands 930
attribute 31
Use the attribute 31 command to alter the format of the MAC address sent to
the RADIUS server in the Calling-Station-Id attribute when authenticating
using 802.1X MAC based authentication for an interface. Use the no form of
the command to return the MAC address format to the default.
Syntax
attribute 31 mac format { ietf | unformatted | legacy } [lower-case | upper-
case]
no attribute 31 mac format
• ietf—Format the MAC address as 18-DB-F2-25-B2-D4. The default is
upper case.
• unformatted—Format the MAC address as 18dbf225b2d4. The default is
lower case.
• legacy—Format the MAC address as 18:db:f2:25:b2:d4. The default is
lower case.
• lower-case—Format hexadecimal characters using the character set [0-9a-
f].
• upper-case—Format hexadecimal characters using the character set [0-9A-
F].
Default Configuration
The default is to send the Calling-Station-ID in upper case unformatted
format.
Command Mode
RADIUS Server Configuration
User Guidelines
Use this command to override the format of the Calling-Station-ID MAC
address sent in authentication Access-Request for ports configured for MAC
based 802.1x authentication for a specific RADIUS server.
This command is only supported for 802.1X authentication.