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What's Changed

Learn about what changed in this release for NFX Series devices.

Software Installation and Upgrade

  • Two-step Downgrade (NFX150, NFX250 NextGen, and NFX350)—You cannot downgrade Junos OS Release 23.1R1 directly to certain releases (listed in the Target Release column in Table 1). As a workaround, you can perform downgrade as a two-step activity, in which you downgrade Junos OS Release 23.1R1 first to a corresponding intermediate release (listed in Table 1), and then to the target release.

    Table 1: Release Compatibility for Downgrading Junos OS 23.1R1 on NFX Series Devices
    Target Release Intermediate Release
    Any 22.4x release earlier than 22.4R2 22.4R2
    Any 22.3x release earlier than 22.3R2. 22.3R2
    • Any 22.2x release earlier than 22.2R3.

    • Any 22.1x release or earlier releases.