Overview
This section provides information about the upgrade paths for Nexus 9000 Series devices and outlines the supported transitions between major and maintenance software releases.
For a list of specific releases from which you can perform a disruptive upgrade or a non-disruptive ISSU, see the Cisco Nexus 9000 Series NX-OS Release Notes for your particular release.
For ISSU compatibility for all releases and information about the upgrade paths, see the Cisco Nexus 9000 and 3000 Upgrade and ISSU Matrix.
In general, ISSU is supported from
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a major release to any associated maintenance release
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the last two maintenance releases to the next two major releases, and
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an earlier maintenance release to the next two major releases.