Chapter 4 Troubleshooting Line Cards

Troubleshooting the OC-12 Packet-Over-SONET Line Card

Table 4-5 OC-12 POS Line Card Fault Indications and Recommended Action

Fault

Corrective Action

 

 

 

Fail LED is lit indicating that the line card has failed

1.

Reinsert the line card.

 

2.

Replace the line card.

 

3.

Insert the line card in another slot.

 

4.

Contact the Cisco TAC.

 

 

 

Carrier LED is off and interface is enabled

1.

Check the fiber optic cable, making sure that it is properly

 

 

attached at both ends.

 

2.

Make sure that you are using the proper fiber type.

 

3.

Check the cable connections on the remote equipment.

 

4.

Contact the Cisco TAC.

 

 

 

Fail LED blinks then lights steadily repeatedly

1.

Check for bent pins on the backplane.

or

2.

If there are no bent pins, replace with a new line card.

3.

Try inserting the line card in a different slot.

 

Card seems to be passing traffic (Tx/Rx lights), but

 

If the card works in a different slot, the Cisco uBR10012

cannot communicate with the PRE

 

 

 

backplane may be defective. Contact the Cisco TAC.

 

 

 

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

 

OL-1237-01

4-13

 

 

 

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Cisco Systems UBR10012 manual Fault Corrective Action