Feature Description
5G UPF supports backward compatibility of software releases on the SMF and the UPF. The feature allows seamless upgrade/downgrade of the software from/to one previous release (N-1). The functionality includes support for the following:
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N-1 compatibility of software releases on two UPFs in ICSR mode—allows seamless upgrade of UPFs from one version to another in UPF 1:1 redundancy scenario.
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N-1 compatibility of software releases between SMF and UPF—allows seamless upgrade of the associated SMF or UPF from one version to another.
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N-1 compatibility of software releases between SMF and UPF with multi-Sx—allows seamless upgrade of the associated SMF or UPF from one version to another in multi-Sx scenario.
For more information, refer to the UCC 5G UPF Configuration and Administration Guide > Software Management Operations chapter.