Troubleshoot TACACS+ Problems
Use the trace level command to check traps and log files to see any TACACS+ failure. If TACACS+ experiences failure conditions, the TACACS+ module sends SNMP traps to notify the user. The TACACS+ module also logs the failure information into the system log file.
About this task
Caution
Using the trace tool inappropriately can cause CPU lockup conditions, loss of access to the device, loss of protocols, and service degradation. If you use trace level 3 (verbose) or trace level 4 (very verbose), do not use the screen to view commands due to the volume of information the system generates and the effect on the system.
Procedure
Variable Definitions
The following table defines parameters for the trace command.
Variable |
Value |
---|---|
level [<Module_ID>] [<1–4>] |
Starts the trace by specifying the module ID and level. Module ID 23 represents the IGMP module <Module_ID> specifies the module for the trace. Different hardware platforms support different IDs because of feature support differences. For feature support information, see Fabric Engine and VOSS Feature Matrix. To see the list of module IDs, use the show trace modid-list command or CLI command completion Help. <0-4> specifies the trace level:
|
shutdown |
Stops the trace operation. |
screen {disable|enable} |
Enables or disables the display of trace output to the screen. Important:
As a best practice, avoid using the screen to view commands if you use trace level 3 (verbose) or trace level 4 (very verbose) due to the volume of information generated and the effect on the system. |
The following table defines parameters for the show trace command.
Variable |
Value |
---|---|
file [tail] |
Displays the trace results saved to a file. |
level |
Displays the current trace level for all modules. |
modid-list |
Specifies the module ID list. |