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USB Installation or Upgrade Guideline for JUNIPER QFX Switch System

Time: 2025-01-14
        JUNIPER switch system files usually have tgz format installation package and image format system image file, JUNIPER QFX Series Switch System Upgrade Guidelines introduces you to use FTP to import tgz format installation package, and use the command install to upgrade the switch software. Next, Moduletek Limited Laboratory will show you how to upgrade the JUNIPER QFX switch with the help of USB by using the system image file in image format.
1. USB boot disk creation
        According to the device model, go to the official website to download the system image file in image format. In this case, the switch model is QFX5200-32C (junos:18.4R1.8), and the upgrade target system version is junos 20.2 (system image file: install-media-host-usb-qfx-5e-flex-x86-64-20.2R2.11.img).
Note: Switch system software download directory: https://support.juniper.net/support/downloads;
Figure 1 Image File Download
        Write the image file with the help of disk image tool to make the USB into a boot disk, and use FAT32 as the format of the USB disk.
Note: Download the disk image tool from https://sourceforge.net/projects/win32diskimager;
Figure 2 Make a boot disk
        After writing the image file to the USB, you can see the following files inside the USB.
Figure 3 USB boot disk file
2. Switch system installation
        Connect the boot disk to the USB port of the switch, power on the switch, enter the system, the following options will pop up, select the second item to install JUNIPER operating system;
Figure 4 Select System Installation
        The device will start to install the system in the boot disk and reboot automatically after the installation is completed; this method upgrades the switch software without considering the cross-version problem;
Figure 5 System installation process
        After the switch boots successfully, the upgrade is completed, the original user configuration is invalidated, and the system logs in with the root account without password; view the version of the system software running on the switch.
Figure 6 View the current software version of the switch
        Moduletek Limited is at your service.
        If you have any questions about the above content, you can contact us by Email : web@moduletek.com.
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