Enterasys Networks 2G4072-52 User Manual

Troubleshooting Checklist

4-4 Troubleshooting

If the 2G4072‐52 is not working properly, refer to 

 for a checklist of problems, 

possible causes, and recommended actions to resolve the problem.

All LEDs are 
OFF.

Loss of power.

Ensure the 2G4072-52 was installed properly according to 
the installation instructions in 

, and that the 

chassis has power.

No Local 
Management 
Password 
screen.

Incorrect terminal setup.

Refer to the Enterasys Matrix N Standalone Series 
Configuration Guide for proper setup procedures.

Improper console cable pinouts.

Refer to 

 for proper COM port pinouts.

Corrupt firmware image or 
hardware fault.

If possible, attempt to download the image to the 
2G4072-52 again. Refer to 

 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 

 for instructions on how to set the mode 

switch to reset the username/password combination to the 
default values.

Cannot contact 
the 2G4072-52 
through in-band 
management.

IP address not assigned.

Refer to the Enterasys Matrix N Standalone Series 
Configuration Guide for the IP address assignment 
procedure.

Port is disabled.

Enable port. See Enterasys Matrix N Standalone Series 
Configuration Guide for instructions to enable/disable 
ports.

Host Port policy and/or 
management VLAN is incorrectly 
configured, or not configured. 

Verify that a management VLAN exists and that it is 
associated with the Host Port.
Refer to the Enterasys Matrix N Standalone Series 
Configuration Guide for information about Host Port and 
management VLAN configuration.

No link to device.

Verify that all network connections between the network 
management station and the 2G4072-52 are valid and 
operating.
If the problem continues, contact Enterasys Networks for 
technical support.