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Instructions for Validating the Junos Space Network Management Platform OVA and ISO Image

 

To check the credibility of JA2500 or any virtual application image, compare the checksum values. Verifying the checksum helps to validate that the device image is staged properly and is not corrupted or altered in any way.

To view the checksum on your device, use the following procedure:

  1. Using a Web browser, navigate to https://support.juniper.net/support/downloads/.
  2. Enter a product name in the text box. For example, Junos Space Network Management Platform.
  3. Select a version from the drop-down list. For example, 19.1.
  4. Download the ova and iso image to your computer.
  5. From the shell prompt, enter the following commands to view the checksum values.
    >md5sum space-19.1R1.391861.ova
    >sha1sum space-19.1R1.391861.ova
    >sha256sum space-19.1R1.391861.ova
    >sha512sum space-19.1R1.391861.ova
    >md5sum space-19.1R1.391861-usb.iso
    >sha1sum space-19.1R1.391861-usb.iso
    >sha256sum space-19.1R1.391861-usb.iso
    >sha512sum space-19.1R1.391861-usb.iso

To view the checksum on the download page, use the following procedure:

  1. Using a Web browser, navigate to https://support.juniper.net/support/downloads/.
  2. Enter a product name in the text box. For example, Junos Space Network Management Platform.
  3. Select a version from the drop-down list. For example, 19.1.
  4. Click the Checksums option. A pop-up window displays the checksum values.

Compare the checksum values between the download site and the downloaded image. If the checksum values are the same, then the image is a valid image, and you can use the image for installing and upgrading. If the checksum values are different, then the image is damaged, partially downloaded, or manually modified.