Appendix; Isolating Problems - Cisco 2691 - VPN Bundle Router Hardware Installation Manual

Troubleshooting
Your Cisco 2600 series router goes through extensive testing and burn-in before leaving 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.
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Note
To troubleshoot a network module, refer to the
troubleshoot a WAN interface card, refer to the
If you cannot locate the source of the problem, contact a customer service representative for information
on how to proceed. For information about obtaining technical support, see the
Assistance" section on page
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Isolating Problems

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 and rear panel of the router enable you to determine router performance and
operation. For a description of these LEDs, see the
and the
When problem solving, consider the following subsystems:
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OL-2171-06
Isolating Problems, page A-1
System Messages, page A-4
Recovering a Lost Password, page A-4
Cisco Technical Assistance Center, page A-4
xviii. 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
"Reading the Rear-Panel LEDs" section on page
Power and cooling systems—External power source, power cable, router power supply and circuit
breaker, and router blower and fan. Also consider inadequate ventilation or air circulation.
A P P E N D I X
Cisco Network Modules Installation
Cisco Interface Cards Installation
"Reading the Front-Panel LEDs" section on page 1-3
1-5.
Cisco 2600 Series Routers Hardware Installation Guide
A
Guide; to
Guide.
"Obtaining Technical
A-1