Field Notice: FN - 63894 - UCS-PSU-6296UP-AC PSU Silent Reload Failure - Replace on Failure

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Updated:June 29, 2018
Document ID:FN63894

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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.

Revision History

Revision Publish Date Comments
1.0
05-Jan-17
Initial Release
10.0
13-Oct-17
Migration to new field notice system
10.1
28-Jun-18
Removed the Upgrade Program Section

Products Affected

Affected Product ID Comments
UCS-PSU-6296UP-AC=
UCS-PSU-6296UP-AC

Defect Information

Defect ID Headline
CSCuf57615 Nexus 5596UP/600x: Silent reload with i2code cause 0x0800 or 0x2

Problem Description

A particular component failure in UCS-PSU-6296UP-AC and UCS-PSU-6296UP-AC= power supply units (PSUs) can cause the entire UCS 6296 fabric interconnect to reload.

All UCS-PSU-6296UP-AC and UCS-PSU-6296UP-AC= power supplies with a Part Number of 341-0495-01 and a Part Revision -A0 and -B0 are impacted.

All UCS-PSU-6296UP-AC and UCS-PSU-6296UP-AC= power supplies with a Part Number of 341-0523-01 and a Part Revision -A0 or higher are not impacted.

Background

The most common reason for the system reset is loss of power to the switch. Make sure the switch has dual power supplies connected to different power distribution units (PDUs) and power to the switch is stable. This bug is seen on switches with redundant power supplies powered up and when one of the power supplies goes bad, which triggers the entire switch to reload.

Problem Symptom

A single PSU failure in a UCS 6296 fabric interconnect might cause the entire system to reboot.

Workaround/Solution

Replace the affected hardware via standard Return Material Authorization (RMA) process.

Refer to the "How to Identify Affected Products" section for instructions on how to view the version of in-service product.

How To Identify Affected Products

sxucs3-B(nxos)# show sprom powersupply 1 | egrep Product|Part|Serial
Product Number : UCS-PSU-6296UP-AC
Serial Number : POG16487L4D
Part Number : 341-0495-01
Part Revision : A0
sxucs3-B(nxos)# show sprom powersupply 2 | egrep Product|Part|Serial
Product Number : UCS-PSU-6296UP-AC
Serial Number : POG16487L2C
Part Number : 341-0495-01
Part Revision : A0

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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