Troubleshooting Checklist
3-6 Troubleshooting
Troubleshooting Checklist
If the device is not working properly, refer to Table 3-9 for a checklist of problems, possible causes,
and recommended actions to resolve the problem.
Table 3-9 Troubleshooting Checklist
Problem Possible Cause Recommended Action
All LEDs are OFF. Loss of power. Ensure that the switch was installed properly according to the
installation instructions in Chapter 2, Installation.
Ensure that the power cords are connected properly to an active power
source that meets the AC input specifications for this switch.
Ensure that the AC power cord is not damaged. Replace the power
cord with a known good one.
No local
management
startup screen.
Incorrect terminal setup. Refer to the Enterasys 800-Series CLI Reference for proper setup
procedures.
Improper Console cable
pinouts.
Refer to Figure 2-28 on page 2-33 for proper Console port pinouts.
Corrupt firmware image, or
hardware fault.
If possible, attempt to download the image to the device again. Refer to
the Enterasys 800-Series CLI Reference for details.
Cannot navigate
beyond startup
screen.
Improper Community Names
Table.
Refer to the Enterasys 800-Series CLI Reference for the Community
Names Table setup.
Cannot contact the
switch through in-
band management.
IP address not assigned. Refer to the Enterasys 800-Series CLI Reference or the Enterasys
800-Series Web UI Reference for the IP address assignment
procedure.
Port is disabled. Refer to the Enterasys 800-Series CLI Reference or the Enterasys
800-Series Web UI Reference for instructions to enable/disable ports.
No link to device. Verify that all network connections between the network management
station and the device 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 800-
Series CLI Reference or the Enterasys 800-Series Web UI Reference
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
switch power was
cycled.
Clear NVRAM was set using
CLI commands.
Re-enter the lost parameters as necessary. Refer to the Enterasys
800-Series CLI Reference for the instructions to configure the switch
using CLI commands.
If the problem continues, contact Enterasys Networks for technical
support.
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