Troubleshooting Checklist
Enterasys NAC Controller Hardware Installation Guide 5-5
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.
User parameters
(IP address, device
and module name,
etc.) were lost
when the module
power was cycled,
the front panel
OFFLINE/RESET
switch was
pressed.
Position of Mode switch (7),
Persistent Data Reset, was
changed sometime before
either cycling power or
pressing the
OFFLINE/RESET switch,
causing the user-entered
parameters to reset to
factory default settings.
Clear Persistent Data that
was set through Local
Management.
The module was moved
either from slot-to-slot or
from chassis-to-chassis.
Reenter the lost parameters as necessary. Refer to the
Enterasys Matrix DFE-Diamond/Platinum Series
Configuration Guide for the instructions to configure
the device.
If the problem continues, contact Enterasys Networks
for technical support.

Table 5-2 Troubleshooting Checklist (continued)

Problem Possible Cause Recommended Action