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Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
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Chapter 4 Troubleshooting the Installation
Troubleshooting Methods
Troubleshooting Methods
This section describes the troubleshooting methods used in this chapter and describes how
Cisco uBR10012 routers are divided into subsystems for more efficient problem solving.
Before You Call for Technical Assistance
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
Problem Solving Using a Subsystems Approach
The key to solving problems with the system is isolating the problem to a specific subsystem. Because
a startup problem is usually caused by a single component, it is more efficient to first isolate the problem
to a subsystem rather than troubleshoot each component in the system. For these troubleshooting
procedures, consider the following subsystems:
•
Power subsystem—Includes the power supply and the external power cable.
•
Processor subsystem—Includes the network processing card, the modular port adapter, the service
module, and the fixed RF ports. The system memory and management functions reside on the
network processing card, and the enabled LED on each port indicates if the port is initialized. A port
adapter that is partially installed in the router can cause the system to hang and crash.
•
Cooling subsystem—Includes the fans.
The following sections help you isolate a problem to one of these subsystems and direct you to the
appropriate troubleshooting section.