The device copies the software from the removable media emergencyīoot device onto your system, occasionally displaying status messages.Ĭopying the software can take up to 45 minutes, depending on WARNING: The installation will erase the contents of your disk. Information for Junos OS with Upgraded FreeBSD. In Junos OS Release 15.1, Junos OS with upgraded FreeBSD does notĭisplay the following warning. n, where n is a number from 0 through 9). For extra safety, you can also copy the backup configurations For instructions on creating anĮmergency boot device, see Creating an Emergency Boot Device for Routers When the router or switch is first shipped, an emergency The following steps before you perform the recovery installation:Įnsure you have an emergency recovery disk to use during Saved the device’s previous configuration, you can simply restoreĭepending on the situation, you should try to perform You can either create a new configurationĪs you did when the device was shipped from the factory, or if you Have recovered the software, you will need to restore the router or You may need to perform a recovery installation, using the emergencyīoot device to restore the default factory installation. If the device’s software is corrupted or otherwise damaged, Was shipped from the factory, or restore the previously saved configuration The device displays the Junos OS login prompt: a new configuration as you did when the device On which the software was just installed. When the software is finished being copied from the emergencyĭevice to the device, the device reboots from the internal flash storage The device copies the software from the emergency bootĭevice, occasionally displaying status messages. The Junos OS software from the emergency boot device. Select Install Juniper Linux Platform to install Juniper Linux Installer - (c) Juniper Networks 2014 Junos OS software from the factory installed on the emergency bootĭevice. The software prompts you with the following option if you have Select Install Junos Snapshot to install the snapshot. You have a snapshot saved on the emergency boot device: Junos Snapshot Installer - (c) Juniper Networks 2013 The software prompts you with the following option if Load the Junos OS from the emergency boot device onto the internal Insert the emergency boot device into the device. See Creating a Snapshot and Using It to Boot a QFX Series Which include the running Juniper Networks Junos OS, the active configuration,Īnd the rescue configuration-and copies all of these files intoĪ memory source. The system snapshot feature takes a “snapshot” of theįiles currently used to run the QFX Series switch-the completeĬontents of the /config and /var directories, You can use the system snapshot feature to complete this step. n, where n is a number from 0 through 9) to a remote system or Safety, you can also copy the backup configurations (the files named /config/nf. System, such as a server, or to an emergency boot device. See Creating an Emergencyīoot Device for QFX Series Switches for information onĬopy the existing configuration in the file /config/ from the device to a remote If at all possible, you should try to perform theįollowing steps before you perform the recovery installation:Įnsure that you have an emergency boot device to use during Previous configuration, you can simply restore that file to the device. When the device was shipped from the factory, or if you saved the You can either create a new configuration as you did Once you have recovered the software, you need to restore the deviceĬonfiguration. (for example, a USB flash drive) to restore the default factory installation. To perform a recovery installation using an emergency boot device Way that prevents the software from loading correctly, you may need If Junos OS on your device is damaged in some See Release Information for Junos OS with (To determine which platforms use Junos OS with upgraded FreeBSD, For example, the filename might be install-media-9.0R2.10–domestic for Junos OS or, for Junos OS with upgraded FreeBSD, junos-install-media-usb-mx-x86-64-16.1R2.11.img (unzipped). To the installation media downloaded into the /var/tmp directory. Names of the removable media, see the table in Routing Engines and Storage Media Names (ACX Series, M Series, MX Series, PTX Series, T Series, TX Matrix, TX Matrix Plus, and JCS 1200 Routers). The removable media name for an emergency boot device on the M120 To the removable media name of the emergency boot device. For Junos OS with upgraded FreeBSD: dd if=/dev/zero of=/dev/externalDrive count=20ĭd if=installMedia.img of=/dev/externalDrive bs=256kįor Junos OS: dd if=/dev/zero of=/dev/externalDrive count=20ĭd if=installMedia of=/dev/externalDrive bs=64k
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