Environmental Reporting Features; Reading Front-Panel Led Indicators; System Led Operation - Cisco EF4116 Hardware Installation And Maintenance Manual

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Environmental Reporting Features

If the router is operating at an abnormally high temperature, the following message will be
transmitted to the console screen:
Typical causes of abnormally high system temperature follow:
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Reading Front-Panel LED Indicators

The router's front panel has LED indicators for determining system performance and operation at a
glance. The following sections contain information on reading the LED indicators.

System LED Operation

Figure 4-1 shows the network activity and health indicators and the run and power lights on the
router front panel.
Figure 4-1
System boots, but console screen is frozen.
— Check the external console connection.
— Verify the console baud rate in the documentation for the terminal.
System powers on and boots with a particular network processor module disconnected from the
motherboard.
— Suspect the network processor module.
System powers on and boots with a particular network processor module or cable disconnected.
— Suspect the network processor module or cable.
%SYS-1-OVERTEMP: System detected OVERTEMPERATURE condition. Please resolve cooling
problem immediately!
Fan failure
Air conditioner failure in the room
Air blockage to cooling vents
Cisco 4000 Series—Front Panel Indicators
Network activity LEDs
1 2
DATA DATA
OK OK
Health LEDs
Run LED
3
DATA
OK
Power LED
Troubleshooting the Initial Hardware Configuration 4-3
Environmental Reporting Features
SERIES
OK
POWER