Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?



With Junos OS Evolved, you can enable higher availability, accelerate your deployments, innovate rapidly, and operate your network more efficiently. We’ve aligned Junos OS Evolved with Junos OS so that you can seamlessly continue to manage and automate your network. There are, however, differences between Junos OS and Junos OS Evolved that you should know about before moving over to this powerful new OS. For details on these changes, see How Junos OS Evolved Differs from Junos OS.

Use these release notes to find new and updated features, software limitations, and open issues for Junos OS Evolved Release 21.2R2.

These release notes are cumulative and are updated for later releases.

For more information on this release of Junos OS Evolved, see Introducing Junos OS Evolved.