Field Notice: FN74154 - Some A900-PWR1200-A Power Supply Units on Cisco Network Convergence System 560 Series Routers May Become Unresponsive After FPD Upgrade with Specific Cisco IOS XR Releases - Software Upgrade Recommended
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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 |
|---|---|---|
| A900-PWR1200-A | ASR 900 1200W AC Power Supply | |
| A900-PWR1200-A= | ASR 900 1200W AC Power Supply | |
| N560-4 | N560 4RU Chassis HW with RSP4 | |
| N560-4-E | NCS 560 4RU Chassis HW with RSP4-E, PSU options and FAN | |
| N560-4-E-CC | NCS 560 4RU CC Chassis HW with RSP4-E, PSU options and FAN | |
| N560-4-SYS | N560 4RU HW. Flex. Consumption for RSP4. Smart Licensing | |
| N560-4-SYS-BUN1 | N560 4RU HW. Flex. Consumption for RSP4. Smart Licensing | |
| N560-4-SYS-E | N560 4RU HW. Flex. Consumption for RSP4-E. Smart Licensing | |
| N560-4-SYS-E-BUN1 | N560 4RU HW. Flex. Consumption for RSP4-E. Smart Licensing | |
| N560-4-SYS-E-V | N560 4RU HW. for RSP4-E. ATO for Volume based discounting | |
| N560-4-SYS-V | N560 4RU HW. for RSP4. ATO for Volume based discounting | |
| N560-7 | N560 7RU Chassis HW with RSP4 | |
| N560-7-E | NCS 560 7RU Chassis HW with RSP4-E, PSU options and FAN | |
| N560-7-SYS | N560 7RU HW. Flex. Consumption for RSP4. Smart Licensing | |
| N560-7-SYS-E | N560 7RU HW. Flex. Consumption for RSP4-E. Smart Licensing | |
| N560-7-SYS-E-V | N560 7RU HW. for RSP4-E. ATO for Volume based discounting | |
| N560-7-SYS-V | N560 7RU HW. for RSP4. ATO for Volume based discounting | |
| NCS560-4 | NCS 560 Series Router Chassis 4RU | |
| NCS560-4-CC= | NCS 560 Series Router Chassis 4RU Conformal Coated | |
| NCS560-4= | NCS 560 Series Router Chassis 4RU |
Defect Information
| Defect ID | Headline |
| CSCwk02203 | NCS560: To disable FPD upgrade for (A900-PWR1200-A) PSU |
Problem Description
Some A900-PWR1200-A power supply units on Cisco Network Convergence System (NCS) 560 Series Routers may become unresponsive after a Field Programmable Device (FPD) upgrade to Cisco IOS XR Software releases 7.7.21, 7.8.2, 7.10.1, or 24.1.1.
Background
The root cause of this issue is a power supply FPD upgrade enablement to Cisco IOS XR releases 7.7.21, 7.8.2, 7.10.1, or 24.1.1.
Problem Symptom
After upgrading Cisco NCS 560 Routers to Cisco IOS XR Software Release 7.7.21, 7.8.2, 7.10.1, or 24.1.1, or after online insertion and removal (OIR), output for the # show hw-module fpd command for the power supply may show the FPD status NEED UPGD, as shown in the following example:
# show hw-module fpd
Location Card type HWver FPD device ATR Status Running Programd
0/PM1 A900-PWR1200-A 0.1 DCA-PriMCU NEED UPGD 0.00 0.00
If the command output shows 0.00 for Running and Programd, the device is affected by this vulnerability.
If the FPD upgrade is executed further from this stage, the power module will fail and show a FAILED status for the # show platform command, as shown in the following example:
# show platform
Node Type State Config state
0/PM1/CPU0 A900-PWR1200-A FAILED NSHUT
Workaround/Solution
Do not attempt FPD upgrade for power supply units with the A900-PWR1200-A product ID (PID).
Cisco recommends disregarding the NEED UPGD output for the #show hw-module fpd command on the affected Cisco IOS XR releases that are mentioned in this field notice.
The routers can be upgraded to Cisco IOS XR Release 24.2.1 or later, which have incorporated the fix for this issue.
For A900-PWR1200-A power supply modules that have already failed, a Return Material Authorization (RMA) can be initiated.
Revision History
| Version | Description | Section | Date |
| 1.0 | Initial Release | — | 2024-AUG-06 |
For More Information
For further assistance or for more information about this field notice, contact the Cisco Technical Assistance Center (TAC) using one of the following methods:
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