Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?


Known Limitations

Learn about limitations in this release for ACX Series routers.

For the most complete and latest information about known Junos OS Evolved defects, use the Juniper Networks online Junos Problem Report Search application.

Interfaces and Chassis

Powering up and configuring data path of 400G-ZR and 400G-ZR-M optics is not instant and takes more time comparatively with the other optics. So, an user has to wait enough time before switching to new speed configuration. If the user switches from one speed to the other speed without waiting, leads to interface down. This is dynamic and subject to change from vendor to vendor and 3PO optics. For Juniper qualified optics 6 to 7 minutes in worst case. PR1635443