Cisco Cisco IOS Software Release 12.4(2)XB6 Referências técnicas

To display debugging output for RADIUS parameters, use the debug radius command in privileged 
EXEC mode. Use the no version of command to disable this feature.

debug radius {brief | hex}

no debug radius {brief | hex}

Debugging output in ASCII format is enabled.

Privileged EXEC.

RADIUS is a distributed security system that secures networks against unauthorized access. Cisco 
supports RADIUS under the authentication, authorization, and accounting (AAA) security system. 
When RADIUS is used on the router, you can use the debug radius command to display detailed 
debugging and troubleshooting information in ASCII format. Use the debug radius brief command for 
abbreviated output displaying client/server interaction and minimum packet information. Use the debug 
radius hex command to display packet dump information that has not been truncated in hex format. 

Here is sample output for the debug radius brief command:

Router#debug radius briefRadius protocol debugging is on

Radius protocol brief debugging is on

Radius protocol verbose debugging is off

Radius packet hex dump debugging is off

Radius packet protocol debugging is off

Radius elog debugging debugging is off

Radius packet retransmission debugging is off

Radius server fail-over debugging is off

Radius elog debugging debugging is off

Router# 

*Feb 22 08:33:03.259: RADIUS/ENCODE(00000002):Orig. component type = DOT1X

*Feb 22 08:33:03.259: RADIUS/ENCODE: NAS PORT sending disabled

*Feb 22 08:33:03.259: RADIUS(00000002): Config NAS IP: 0.0.0.0

*Feb 22 08:33:03.259: RADIUS(00000002): Config NAS IP: 0.0.0.0

(Optional) Displays abbreviated debug output.

(Optional) Displays debugging output in hexadecimal notation.

11.2(1)T 

This command was introduced.

12.2(11)T

The brief and hex keywords were added. The default output format became 
ASCII rather than hexadecimal.

12.4(15)XL

This command was integrated into Cisco IOS Release 12.4(15)XL.