Field Notice: FN74023 - Cisco Network Convergence System 540 Routers: N540-24Q8L2DD-SYS Will Not Boot With Cisco IOS XR Release 7.8.x and 7.9.1 - Software Upgrade Recommended

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Updated:July 18, 2023
Document ID:FN74023

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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.

Products Affected


Affected Product Name Description Comments
N540-24Q8L2DD-SYS NCS540-2x400G QSFP-DD+8x50G+24x25G  
N540-24Q8L2DD-SYS= NCS540-2x QSFP-DD 400G+8x50+24x25G Spare  




Defect Information


Defect IDHeadline
CSCwf59503N540-24Q8L2DD-SYS: Router getting bricked with AVL SSD POST to 4.06 BIOS Upgrade

Problem Description


Cisco Network Convergence System (NCS) 540 Routers with the chassis product ID (PID) N540-24Q8L2DD-SYS will not boot when they are upgraded to Cisco IOS XR Release 7.8.x  or 7.9.1.


Background


Cisco IOS XR releases 7.8.x and 7.9.1 are configured with a specific BIOS version that has compatibility issues with Cisco NCS 540 Routers PID N540-24Q8L2DD-SYS.


Problem Symptom


Cisco NCS 540 Routers with the PID N540-24Q8L2DD-SYS will brick and become unresponsive after upgrading to Cisco IOS XR Release 7.8.x or 7.9.1


Workaround/Solution


Cisco recommends upgrading Cisco NCS 540 Routers with the PID N540-24Q8L2DD-SYS to Cisco IOS XR Release of 7.9.2 that has the fix . It is  recommended to avoid upgrading to IOS XR releases 7.8.x or 7.9.1 because backporting or recovering from the failure is not possible. For routers that are already impacted by the upgrade issue that is described in this field notice, a Return Material Authorization (RMA) can be initiated.


Revision History


VersionDescriptionSectionDate
1.0Initial Release—2023-JUL-18

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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