A-3
Cisco IAD2801 Series Integrated Access Devices Hardware Installation Guide
OL-12433-01
Appendix A Troubleshooting
Solving Problems
–
If the SYS PWR LED is not on, refer to the
“Cisco 90-Day Limited Hardware Warranty Terms”
section of the
document for warranty information, or contact customer service.
–
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
for power supply LED descriptions.
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:
•
Fan failure
•
Air conditioner failure in the room
•
Air blockage to cooling vents
Take steps to correct the problem. See also the
“Site Environment” section on page 2-3
, and the
“Equipment Racks” section on page 2-4
.
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:
•
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
“Cisco 90-Day Limited Hardware Warranty
and the
“Obtaining Technical Assistance”
online document
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:
