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Software Images Overview

A device image is a software installation package used to upgrade or downgrade the operating system running on a network device. Juniper Security Director Cloud helps you to manage (add, stage, deploy, and delete) the entire lifecycle of images of all managed network devices.

Juniper Security Director Cloud can manage the software images running on SRX Series Firewall (both standalone and chassis clusters) and vSRX Virtual Firewall.

To access this page, click SRX > Device Management > Software images.

Workflow

The following is the software image upgrade workflow in Juniper Security Director Cloud:

  1. Add a software image in Juniper Security Director Cloud.

  2. Stage the software image on the device.

    Juniper Security Director Cloud validates whether the complete software is copied onto the device by using the checksum of the image. The checksum of the image in Juniper Security Director Cloud is verified with the checksum of the image in the device. If the checksum of the image copied onto the device does not match with the checksum of the device in Juniper Security Director Cloud, the image copied onto the device is deleted and the image is copied again. If the checksum does not match again, the stage task fails.

  3. Deploy the software image. During the deployment, the following tasks are performed on the device:

    • Validation of the image copied onto the device—Juniper Security Director Cloud validates if the complete software is copied onto the device by using the checksum of the image. The checksum of the image in Juniper Security Director Cloud is verified with the checksum of the image in the device. If the checksum of the image copied onto the device does not match with the checksum of the device in Juniper Security Director Cloud, the image copied onto the device is deleted and the image is copied again. If the checksum does not match again, the deploy job fails.

    • Upgrade of the image on the device—Juniper Security Director Cloud upgrades devices in the following manner:

      • Single Chassis/Standalone devices—Normal upgrade where the device stops forwarding traffic during the upgrade process.

      • Chassis Clusters (SRX Series Firewalls)—The upgrade or downgrade is possible by using In-Band Cluster Upgrade (ICU) or In-Service Software Upgrade (ISSU). See Upgrading Devices in a Chassis Cluster Using ICU for details about ICU and Upgrading a Chassis Cluster Using In-Service Software Upgrade for details about ISSU.

      • vSRX Virtual Firewall Cluster: For vSRX Virtual Firewall clusters, Juniper Security Director Cloud decides whether it has to use ISSU or manually upgrade the cluster nodes.

    • Reboot the device—The devices are automatically rebooted after the image is upgraded.

Juniper Security Director Cloud synchronizes with the device after the device connects back.

Field Descriptions

Table 1 displays the fields on the Images page.

Table 1: Fields on the Images Page

Field

Description

Image Name

The name of the software image file.

Version

The version number of the software image.

For example, 20.4R1.12

Vendor

The vendor of the software image.

For example, Juniper Networks.

Family

The device family to which the software image belongs.

For example, Juniper-SRX

Supported Platform

The device models on which the software image can be deployed.

Only one device model, such as SRX, is listed in this column. A +<Integer> where the integer indicates the number of additional device models supported is displayed next to the device model, such as +2. Click the +<Integer> to view the list of all the other device models on which the image can be deployed.

Size

The size of the software image file in MB or GB.

Uploaded By

 The user who uploaded the software image file.

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