Field Notice: FN - 72333 - ACI Switch Upgrade Brings Up Downlinks Without Any Policy/Configuration - Software Upgrade Recommended

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
1.2	11-May-22	Updated the Products Affected Section
1.1	12-Mar-22	Updated the Products Affected Section
1.0	25-Feb-22	Initial Release

Products Affected

Affected OS Type	Affected Software Product	Affected Release	Affected Release Number	Comments
NON-IOS	NX-OS System Software-ACI	14.2	14.2(7l)
NON-IOS	NX-OS System Software-ACI	15.2	15.2(1g), 15.2(2e), 15.2(2f)
NON-IOS	NX-OS System Software-ACI	15.1	15.1(1h), 15.1(2e), 15.1(3e), 15.1(4c)
NON-IOS	NX-OS System Software-ACI	15.0	15.0(1k), 15.0(1l), 15.0(2e), 15.0(2h)

Defect Information

Defect ID	Headline
CSCvz71778	apicConnectivity file removed after FPGA golden image update, downlinks up before VLANs programmed

Problem Description

After the switch completes the upgrade, the switch brings up its downlinks without any policy/configuration (VLANs). This can result in hosts hashing to these links and that traffic goes to a null route for a few minutes until the Cisco Application Policy Infrastructure Controller (APIC) handshake completes and the Cisco APIC is able to program the policy.

Background

Cisco has identified a software issue with your selected release which might affect the use of this software. Review this field notice in order to determine if the issue applies to your environment. You can proceed to download this software if you have no concerns with the issue.

For more comprehensive information about what is included in this software, refer to the Cisco APIC documentation.

Problem Symptom

This issue occurs only when an auto-EPLD (electronic programmable logic device) update occurred on the switches as part of a policy-based upgrade to Release 14.2(7l) or 15.2(2e). This issue does not occur when the switches are in a steady state.

Output for the show version CLI command includes text similar to this example:

Last reset at 626622 usecs after  2021-09-10T10:04:17.000000000-05:00
  Reason: Power Down/UP epld upgrade process
  System version: 14.2(7l)
  Service: module reloaded

Workaround/Solution

Upgrade to the 14.2(7q), 15.2(2g), or later release.

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:

• Open a service request on Cisco.com
• By email or telephone

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