CHAPT ER
5-1
Cisco 7201 Installation and Configuration Guide
OL-11364-04
5
Troubleshooting Initial Startup Problems
Your Ci sc o 7201 router went through extensive testing before leaving the factory. However, if you
encounter problems starting the router, use the information in this chapter to help isolate the cause of the
problems. This chapter contains the following sections:
• Troubleshooting Overview, page 5-1
• Online Troubleshooting Resources, page 5-2
• Problem Solving Using a Subsystems Approach, page 5-3
• Upgrading the Boot Helper (Boot Loader) Image, page 5-8
• Boot Prompt: (boot)#, page 5-9
• ROMmon Prompt: rommon >, page 5-10
• Cleaning the Fiber-Optic Connections, page 5-14
The procedures in this chapter assume that you are troubleshooting the initial system startup, and that
your router is in the original factory configuration. If you have removed or replaced components or
changed any default settings, the recommendations in this chapter might not apply. Make sure to review
the safety warnings listed in the Regulatory Compliance and Safety Information for Cisco 7200 Series
Routers publication that accompanied your Cisco 7201 router before using the troubleshooting
procedures in this chapter.

Troubleshooting Overview

This section describes the troubleshooting methods used in this chapter and describes how the
Cisco 7201 router is divided into subsystems for more efficient problem solving. If you are unable to
easily solve the problem, contact a customer service representative for assistance and further
instructions.
Provide the representative with the following information:
• Date you received the router
• Chassis serial number
• Type of software and release number
• Brief description of the problem you are having
• Brief explanation of the steps you have taken to isolate and resolve the problem
• Maintenance agreement or warranty information