Cisco 2811 ROUTER 2FE 1NME 4HWIC 2PVDM 2AIM IP BASE WITH A/C POWER SUPPLY Specification Guide

Does the router shut down after being on a short time?

Check for an environmentally induced shutdown. See the next section, “

.”

Check the environmental site requirements in the 

. 

Ensure that all interface cards and internal modules are correctly installed.

Check for a power supply failure by inspecting the SYS PWR LED on the front panel. If it is 
green, the power supply is functional.

Router partially boots, but LEDs do not come on.

Check for a power supply failure by inspecting the SYS PWR LED on the front panel of the 
router. If the SYS PWR LED is blinking or continuous green or continuous amber, the power 
supply is functional.

If the SYS PWR LED is not on, refer to the 

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 

 for power supply LED descriptions.

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 

, and the 

.

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 module. Each module has its own set of LEDs. For information on these 
LEDs, refer to the online 

.