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

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Troubleshooting Cisco 2800 Series Routers
OL-5789-01
  Reading System LEDs
Make sure that you have a version of Cisco IOS software that supports the module. Check the 
online document 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 module. Check the 
software requirements for the affected module, which can be found in the configuration note 
that shipped with the network 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 
 and the 
 sections of the 
 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:
(a) The same data rate as configured for the router (9600 baud is the default)
(b) 8 data bits
(c) 1 stop bit
(d) No parity generated or checked
Router powers on and boots only when a particular module is removed. 
Check the module. Refer to the 
 and the 
 sections of the 
 online document for warranty and customer service contact 
information.
Confirm that the Cisco IOS release installed in the router supports the card. The 
 lists the software requirements for each card.
Router powers on and boots only when a particular cable is disconnected.
There may be a problem with the module or cable. Refer to the 
 and the 
 sections of the 
 online document. document for 
warranty and customer service contact information.
Reading System LEDs
The system LEDs on the front panel of the router provide information about the power, data packet 
activity, and flash memory activity. For an explanation of these LEDs see