Installation guide

Troubleshooting Checklist
4-4 Troubleshooting
Troubleshooting Checklist
Ifthemoduleisnotworkingproperly,refertoTable 4‐2forachecklistofproblems,possible
causes,andrecommendedactionstoresolvetheproblem.
Table 4-2 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-Diamond/
Platinum 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 “Setting the Mode
Switches” on 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 “Setting the Mode Switches” on
page B-1 for instructions 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-Diamond/
Platinum Series Configuration Guide for the IP
address assignment procedure.
Port is disabled. Enable port. Refer to the Enterasys Matrix DFE-
Diamond/Platinum 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-Diamond/
Platinum 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.
Port(s) goes into
standby for no
apparent reason.
Loop condition detected. 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.