Enterasys Matrix 7G4280-19 Hardware Installation Manual page 70

Troubleshooting Checklist
Table 4-2 Troubleshooting Checklist (continued)
Problem
Cannot contact the
module through in-
band management.
Port(s) goes into
standby for no
apparent reason.
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.
4-6 Troubleshooting
Possible Cause
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.
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 DFE module was moved
either from slot-to-slot or from
chassis-to-chassis.
Recommended Action
Refer to the Enterasys Matrix
DFE-Platinum Series Configuration Guide
for the IP address assignment procedure.
Enable port. Refer to the Enterasys Matrix
DFE-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-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 DFE 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-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.
Reenter the lost parameters as
necessary. Refer to the Enterasys Matrix
DFE-Platinum Series Configuration Guide
for the instructions to configure the
DFE module.
If the problem continues, contact
Enterasys Networks for technical support.