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Troubleshooting Checklist
Troubleshooting Checklist
If the module is not working properly, refer to Table
causes, and recommended actions to resolve the problem.
Table 4-2 Troubleshooting Checklist
Problem
All LEDs are OFF.
No Local
Management
Password screen.
Cannot navigate
beyond Password
screen.
Cannot contact the
module through in-
band management.
Port(s) goes into
standby for no
apparent reason.
4-4 Troubleshooting
Possible Cause
Loss of power.
Incorrect terminal setup.
Improper console cable
pinouts.
Corrupt firmware image, or
hardware fault.
Improper username/
password combination
entered.
IP address not assigned.
Port is disabled.
Host Port policy and/or
management VLAN is
incorrectly configured, or not
configured.
No link to device.
Loop condition detected.
4‐2 for a checklist of problems, possible
Recommended Action
Ensure that the module was installed properly
according to the installation instructions in
and that the host chassis is providing power.
Refer to the Enterasys Matrix DFE-Diamond/Platinum
Series Configuration Guide for proper setup
procedures.
Refer to
Appendix A
for proper COM port pinouts.
If possible, attempt to download the image to the
module again. Refer to
"Setting the Mode
on page B-1 for instructions to clear NVRAM.
If the username/password combination has been
forgotten, refer to
"Setting the Mode
page B-1 for instructions on how to set the mode
switch to reset the username/password combination
to the default values.
Refer to the Enterasys Matrix DFE-Diamond/Platinum
Series Configuration Guide for the IP address
assignment procedure.
Enable port. Refer to the Enterasys Matrix DFE-
Diamond/Platinum Series Configuration Guide for
instructions to enable/disable ports.
Verify that a management VLAN exists and that it is
associated with the Host Port.
Refer to the Enterasys Matrix DFE-Diamond/Platinum
Series Configuration Guide for information about Host
Port and management VLAN configuration.
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.
Verify that Spanning Tree is enabled. Refer to the
Enterasys Matrix DFE-Diamond/Platinum Series
Configuration Guide for the instructions to set the type
of STA.
Review the network design and delete unnecessary
loops.
If the problem continues, contact Enterasys Networks
for technical support.
Chapter
3,
Switches"
Switches" on
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Table of Contents
Troubleshooting
