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Cisco 10000 Series Routers

Field Notice: FN - 62977 - ESR and uBR10k - PRE2 - Defective Ethernet Transceiver on Limited Build of Boards


Revised April 16, 2010
December 12, 2007


NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

    
Revision Date Comment
1.3 16-APR-2010 Added description to metadata.
1.2 07-APR-2010 Added serial number checking tool in How to Identify Hardware section.
1.1 15-DEC-2008 Removed Upgrade Program section and updated title and Workaround/Solution section accordingly.
1.0 12-DEC-2007 Initial Public Release

Products Affected

Products Affected Top Assembly Printed Circuit Assembly Comments
Part Number Revision Part Number Revision
ESR-PRE2
800-08916-16
E0
73-5544-16
B0
Top Assembly revision level of -F0 indicates an updated unit that has had the transceiver replaced.

Serial Numbers

    
Random #
http://serialnumbervalidation.com/62977

Problem Description

The PRE2 backplane ethernet port may fail due to transceiver sub-component failure. This affects PRE2's from the serial number set provided (built between November 2005 and March 2006) when used in either ESR or uBR10k platforms. Symptoms may include unexpected PRE2 reboot, or loss of connectivity to line cards from the PRE2.

Background

A sub-component of one of the Ethernet transceiver modules for the ESR-PRE2 may fail prematurely under normal field use. The transceiver module was first used in November of 2005 and was phased out after March 2006 as part of an unrelated Reduction of Hazardous Substances project. The only part number version to use this component was 800-08916-16. PRE2 engines with earlier (-15) or later (-17) part numbers are not affected.

Subsequently, the early failure of the transceiver module was noted in the field, leading to a defect root cause.

Problem Symptoms

Affected PRE2 boards may either reboot repeatedly without toggling to standby PRE2 or exhibit a loss of connectivity to the backplane Ethernet and installed line cards.

Workaround/Solution

Solution
Replace boards matching serial numbers on the list above.

Note: A failed board may briefly recover after reinsertion, however the board will fail again with extended use. Do not continue to use the board once crash files (if any) are recovered.

Although an upgrade program had previously been provided to replace potentially affected but otherwise working product, the upgrade program is now over and Cisco will only replace product which has actually failed. The standard RMA process should be used to replace failed product.

Note: Products that fall within the affected serial number range are not affected by this problem if they have ECO E091409 applied.

How To Identify Hardware Levels

Note: Units upgraded by Cisco Service Repair will show a top assembly revision level of -F0 (800-08916-16, -F0), indicating that the suspect transceiver was replaced and the unit re-tested.
The PCA board revision will also be incremented to -C0 (73-5544-16, -C0).

Please use the link below to validate your affected serial number(s):
Serial Number Validation Tool

Service Repair will start in December of 2007.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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