Troubleshooting Checklist
Matrix DFE-Gold Series Modules Hardware Installation Guide 4-7
Troubleshooting Checklist

Ifthemoduleisnotworkingproperly,refertoTable 4 ‐1forachecklistofproblems,

possiblecauses,andrecommendedactionstoresolvetheproblem.

Table 4-1 Troubleshooting Checklist

Problem Possible Cause Recommended Action

All LEDs are OFF. Loss of power. Ensure that the module was installed properly
according to the installation instructions in
Chapter 3, and that the host chassis is providing
power.
No Local
Management
Password screen.
Incorrect terminal setup. Refer to the Enterasys Matrix DFE-Gold Series
Configuration Guide for proper setup procedures.
Improper console cable
pinouts.
Refer to Appendix A for proper COM port pinouts.
Corrupt firmware image,
or hardware fault.
If possible, attempt to download the image to the
module again. Refer to the section, “Setting the
Mode Switches,” on pageB-2 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 the section, “Setting the Mode
Switches,” on pageB-2 for in structions on how to
set the mode switch to reset the username/
password combination to the default values.
Cannot contact the
module through
in-band
management.
IP address not
assigned.
Refer to the Enterasys Matrix DFE-Gold Series
Configuration Guide for the IP address
assignment procedure.
Port is disabled. Enable port. Refer to the Enterasys Matrix
DFE-Gold 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 DFE-Gold 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 module are
valid and operating.
If the problem continues, contact Enterasys
Networks for technical support.