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Creating a Snapshot and Using It to Boot an EX Series Switch

The system snapshot feature takes a “snapshot” of the files currently used to run the switch and copies them to an alternate storage location. You can then use this snapshot to boot the switch at the next bootup or as a backup boot option.

This topic includes the following tasks:

Creating a Snapshot on a USB Flash Drive and Using It to Boot the Switch

You can create a snapshot on USB flash memory after a switch is booted by using files stored in internal memory.

Ensure that you have the following tools and parts available before creating a snapshot on a USB flash drive:

A USB flash drive that meets the switch USB port specifications. See USB Port Specifications for an EX Series Switch.

To create a snapshot on USB flash memory and use it to boot the switch:

Place the snapshot into USB flash memory:
user@switch> request system snapshot partition media external
(Optional) Perform this step if you want to boot the switch now using the snapshot stored on the USB flash drive. If you created the snapshot as a backup, do not perform this step.
- To reboot the switch using the most recently created snapshot:
  user@switch> request system reboot media external
- To reboot the switch using a snapshot in a specific partition on the USB flash drive:
  user@switch> request system reboot media external slice alternate

Creating a Snapshot on an Internal Flash Drive and Using it to Boot the Switch

You can create a snapshot in internal memory after a switch is booted by using files stored in external memory.

To create a snapshot in internal memory and use it to boot the switch:

Place the snapshot files in internal memory:
user@switch> request system snapshot partition media internal
(Optional) Perform this step if you want to boot the switch now using the newly created snapshot. If you created the snapshot as a backup, do not perform this step.
- To reboot the switch using the most recently created snapshot:
  user@switch> request system reboot media internal
- To reboot the switch using a snapshot in a specific partition in internal memory:
  user@switch> request system reboot media internal slice alternate

Creating a Snapshot on the Alternate Slice of the Boot Media

The alternate slice of the boot media contains a backup software image that the switch can boot from if it is unable to boot from the primary slice. When you upgrade software, the new software image gets copied only to the primary slice of the boot media.

To create a snapshot of the currently booted software image on the backup slice of the boot media:

user@switch> request system reboot slice alternate