User Guide

CHAPTER
5-1
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
5
Troubleshooting the Installation
This chapter contains general troubleshooting information to help isolate the
cause of difficulties you might encounter during the installation and initial startup
of the system.
The procedures in this chapter assume that you are troubleshooting the initial
startup of the router, as described in the
Powering On the Router and Observing
the Boot Process, page 4-4, and that the system is running the original
configuration. If you altered the original hardware configuration or changed any
default configuration settings, the recommendations in this chapter may not apply.
Although an overtemperature condition is unlikely at initial startup,
environmental monitoring functions are included in this chapter because they also
monitor internal voltages.
Troubleshooting the installation is presented in the following sections:
• Troubleshooting Overview, page 5-2
• Troubleshooting the Power Subsystem, page 5-5
• Troubleshooting the Processor Subsystem, page 5-17
• Troubleshooting the Switch Fabric, page 5-29
• Troubleshooting the Cooling Subsystem, page 5-36