Enterasys Networks 7S4280-19-SYS Manuel D’Utilisation

Troubleshooting Checklist

5-4 Troubleshooting

If the NAC Controller PEP is not working properly, refer to 

 for a checklist of problems, 

possible causes, and recommended actions to resolve the problem.

TX
(Transmit)

None

Port enabled, but no activity.

If it is known that the port should be active 
and is not, contact Enterasys Networks for 
technical support.

Green

Flashing. Indicates data 
transmission activity. Rate of 
flashing indicates the data rate.

None.

Red

Flashing. Fault or Error 
(collision).

None, unless there is a high rate of activity. 
In this case, check for network configuration 
problems or a defective device.

All LEDs are OFF.

Loss of power.

Ensure that the module was installed properly 
according to the installation instructions in 

, 

and that the host chassis is providing power.

No Local 
Management 
Password screen.

Incorrect terminal setup.

Refer to the Enterasys Matrix DFE-Diamond/Platinum 
Series Configuration Guide for proper setup 
procedures.

Improper console cable 
pinouts.

” on page A-7 for proper NAC Controller 

PEP COM port pinouts.

Corrupt firmware image, or 
hardware fault.

If possible, attempt to download the image to the 
module again. Refer to “

page B-1 for instructions to clear NVRAM.

Cannot navigate 
beyond Password 
screen.

Improper username/ 
password combination 
entered.

If the username/password combination has been 
forgotten, refer to “

page B-1 for instructions on how to set the mode 
switch to reset the username/password combination to 
the default values.