Troubleshooting Cisco 3800 Series Routers
Your Cisco 3800 series integrated services router goes through extensive testing and
This document contains the following sections:
•Solving Problems, page 38
•LEDs, page 41
•The show environment Command, page 45
•Error Messages, page 46
•Jumper Settings, page 48
•Recovering a Lost Password, page 49
•More Troubleshooting Help, page 49
Note To troubleshoot network modules, see the Cisco Network Modules Hardware Installation Guide. To troubleshoot interface cards, see the Cisco Interface Cards Installation Guide. These documents are available on Cisco.com.
If you cannot find the source of the problem, contact a customer service representative. For information about obtaining technical support, see the “Obtaining Technical Assistance” section on page 12 of “Introduction to Cisco 3800 Series Routers Hardware Documentation.” Before you call, have the following information ready:
•Router type and serial number (for serial number locations, see the “Product Identification” section on page 5 of “Overview of Cisco 3800 Series Routers”)
•Maintenance agreement or warranty information
•Type of software and version number
•Date you received the router
•Brief description of the problem
•Brief explanation of the steps taken to isolate the problem
Troubleshooting Cisco 3800 Series Routers
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