Environmental Reporting Features; Troubleshooting Modules, Cables, And Connections - Cisco 3700 Series Hardware Installation Manual

Appendix A Troubleshooting
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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:
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•
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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:
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OL-2180-08
Router partially boots, but LEDs do not go on.
Check for a power supply failure by inspecting the system LED on the front panel of the router.
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If the system LED is on, the power supply is functional.
If the system LED is not on, see the
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information about customer service.
Check for a power supply failure by inspecting the power supply LEDs on the front panel. See
–
the "Reading Front-Panel 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 module. Each module has its own set of LEDs. For information on these
LEDs, see the online Cisco Network Modules Hardware Installation
– Make sure you have a version of Cisco IOS software that supports the module. Check the online
Software Configuration Guide for Cisco 2600, Cisco 3600, and Cisco 3700 Series Routers
accompanying configuration note for software requirements for the network module.
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 network module and
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interface card. Check the
Cisco Interface Cards Hardware Installation Guide
the affected network module and interface card software requirements.
"Obtaining Technical Assistance" section on page xvii
"Site Environment" section on page 2-4
2-4.
Cisco Network Modules Hardware Installation Guide
Cisco 3700 Series Routers Hardware Installation Guide
Solving Problems
for power supply LED descriptions.
Guide.
or accompanying configuration notes for
for
and the
or
and the
A-3