Environmental Reporting Features; Troubleshooting Modules, Cables, And Connections; Appendix A Troubleshooting - Cisco IAD2801 Series Installation Manual

Appendix A Troubleshooting

Environmental Reporting Features

If the router is operating at an abnormally high temperature, the following message is displayed on the
console screen:
%SYS-1-OVERTEMP: System detected OVERTEMPERATURE condition. Please resolve cooling
problem immediately!
Some causes of abnormally high router temperature are as follows:
•
•
•
Take steps to correct the problem. See also the
"Equipment Racks" section on page

Troubleshooting Modules, Cables, and Connections

Network problems can be caused by a module; cables or cable connections; or external devices such as
a modem, transceiver, hub, wall jack, WAN interface, or terminal. Check for the following symptoms to
help isolate the problem:
•
•
•
•
OL-12433-01
If the SYS PWR LED is not on, refer to the
–
section of the "Preface"
Check for a power supply failure by inspecting the power supply LEDs on the front panel. See
–
the "Reading System LEDs" section on page A-4
Fan failure
Air conditioner failure in the room
Air blockage to cooling vents
Module is not recognized by the router.
Make sure that the module is firmly seated in its slot.
–
Check the LEDs on the interface card if they exist.
–
Make sure that you have a version of Cisco IOS software that supports the interface card.
–
Module is recognized, but interface ports do not initialize.
Make sure that the module is firmly seated in its slot.
–
– Check external cable connections.
– Make sure that you have a version of Cisco IOS software that supports the module. Check the
software requirements for the affected module.
Router does not boot properly, or constantly or intermittently reboots.
Make sure that the module is firmly seated in its slot.
–
Check the router chassis or software. Refer to the
–
Terms" and the "Obtaining Technical Assistance"
for warranty and customer service contact information.
Router boots, but the console screen is frozen, displays no output, or displays garbled output.
Check the external console connection.
–
Verify that the parameters for your terminal are set as follows:
–
Cisco IAD2801 Series Integrated Access Devices Hardware Installation Guide
"Cisco 90-Day Limited Hardware Warranty Terms"
document for warranty information, or contact customer service.
for power supply LED descriptions.
"Site Environment" section on page
2-4.
"Cisco 90-Day Limited Hardware Warranty
sections of the
Solving Problems
2-3, and the
"Preface" online document
A-3