When upgrading the Cisco ACI fabric through an intermediate release, the following steps should be

taken:

Upgrade the APICs to an interim release: This is the first step to ensure that the APICs are running a

stable version that is compatible with both the current and the targeted release1.

Upgrade the switches to an interim release: After the APICs are upgraded, the next step is to upgrade

the leaf and spine switches to the same interim release. This ensures that the entire fabric is running

on a compatible version before moving to the targeted release1.

Upgrade the APICs to the targeted release: Once the fabric is stable on the interim release, the APICs

can be upgraded to the targeted release. It’s important to verify that the APICs are fully operational

before proceeding to upgrade the switches1.

Upgrade the leaf and spine switches to the targeted release: The final step is to upgrade the leaf and

spine switches to the targeted release. This should be done after the APICs have been successfully

upgraded and are stable on the targeted release1.

By following these steps, the customer can successfully upgrade the Cisco ACI fabric to the new code

release that includes the desired feature.