This article is intended to clarify on supportability for the NSSU software upgrade through Juniper Mist Cloud for Juniper Networks EX/QFX Series Switches that supports it.

The Juniper Mist™ portal supports upgrading the Junos OS software on the following platforms: EX2300, EX3400, EX4100, EX4100-F, EX4300-P, EX4300-MP, EX4400, EX4600, EX4650, EX9200, QFX5110, QFX5120, and EX Series Virtual Chassis.

In the case of Virtual Chassis, you can only upgrade the mixed EX4300 Virtual Chassis, which combines EX4300 multigigabit model (EX4300-48MP) switches with any other EX4300 model switches.

Juniper Mist does not support nonstop software upgrade (NSSU).