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Hi everyone,I am trying to find if ISSU on QFX Virtual chassis is supported. So far I have not found any juniper doc saying it does.Thanks.
ISSU is supported in Dual RE configurations on physical routers and SRX chassis clusters.ISSU is not supported in virtual chassis.
In-Service Upgrade is supported on QFX Virtual Chassis and it's called Non-Stop Software Upgrade (NSSU). You can find more info about it here https://apps.juniper.net/feature-explorer/feature-info.html?fKey=1175&fn=Nonstop+software+upgrade+%28NSSU%29