Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 

Recovering System Software on a C Series Controller from a System Snapshot (SRC CLI)

 

If you encounter a software failure on a C Series Controller, in most cases you can recover from the failure by restoring the software from a snapshot by using the request system restore command.

If, however, the operating system on the main partition on a C Series Controller is damaged, the operating system tries to boot from the snapshot partition. If the system does not boot from the snapshot partition, you can try to manually reboot the system and use the software snapshot.

If a software failure damages the snapshot partition on a C Series Controller, you can boot the system from the USB storage device supplied with the C Series Controller. After the system boots, it installs the system software from the USB storage device. The USB storage device supplied with the C Series Controller contains a copy of the system software. For more information, see Recovering or Installing System Software on a C Series Controller by Using the USB Storage Device Supplied by Juniper Networks.

To boot a C Series Controller from the system snapshot:

  1. Connect a console terminal to the C Series Controller.

    See your C Series Controller Hardware Guide.

  2. Initiate a system reboot in one of the following ways:

    • Power off and then power on the C Series Controller.

    • To enter the boot menu, press the Spacebar on the console when the Press any key to continue prompt is displayed.

  3. From the boot menu, select the backup partition.

    If a software failure damages the boot partition on a C Series Controller, you can install the system software from the USB storage device that is supplied with a C Series Controller.