Troubleshooting Checklist
4-4 Troubleshooting
Troubleshooting Checklist

Ifthemoduleisnotworkingproperly,refertoTable 4 ‐2forachecklistofproblems,possible

causes,andrecommendedactionstoresolvetheproblem.

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 the section, “Setting the Mode
Switches,” on pageB-1 fo r 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-1 fo r 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 EnterasysNetworks
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 EnterasysNetworks
for technical support.