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Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide
OL-7872-04
A P P E N D I X
A
Troubleshooting
Your Cisco MWR 1941-DC-A router undergoes extensive testing before it leaves the factory. If you
encounter problems, use the information in this appendix to help isolate problems or to eliminate the
router as the source of the problem.
This appendix contains the following sections:
•
Problem Solving
, this page
•
Reading the LEDs, page A-4
If you cannot locate the source of the problem, contact a customer service representative for information
on how to proceed. For technical support information, see the
Cisco
Information Packet
publication that
shipped with your router. Before you call, have the following information ready:
•
Chassis type and serial number
•
Maintenance agreement or warranty information
•
Type of software and version number
•
Date you received the new chassis
•
Brief description of the problem
•
Brief explanation of the steps you have taken to isolate the problem
Note
Ensure you provide the customer service representative with any upgrade or maintenance information
that was performed on the Cisco MWR 1941-DC-A router after your initial installation (see the
“Creating a Site Log” section on page 2-9
and
Appendix C, “Site Log”
for Site Log information.
Problem Solving
The key to problem solving is to isolate the problem to a specific subsystem by comparing what the
router is doing to what it should be doing.
The LEDs on the front panel of the router enable you to determine router performance and operation.
For a description of these LEDs (see
“Reading the LEDs” section on page A-4
).
When problem solving, check the following router subsystems:
•
Power and cooling systems—External power source, power cable, router power supply and circuit
breaker, and router fans. Also check for inadequate ventilation or air circulation.
•
Modules—Checking the LEDs on the modules can help you to identify a failure.
