Upgrading Using ISSU

 

In-service software upgrade (ISSU) enables you to upgrade between two different

Junos OS releases with no disruption on the control plane and with minimal disruption of traffic.

For additional information about using ISSU on routing and switching devices, see the High Availability Feature Guide.

For additional information about using ISSU on security devices, see the Chassis Cluster Feature Guide for SRX Series Devices  .

For information about ISSU support across platforms and Junos OS releases, see the In-Service Software Upgrade (ISSU) Web application.