Performing a Recovery Installation of the Director Group

If Junos OS on your Director group is damaged in some way that prevents the software from loading correctly, you may need to perform a recovery installation using an emergency boot device (external USB flash drive) to restore the default factory installation. Once you have recovered the software, you need to restore the Director group configuration. You can either create a new configuration as you did when the Director group was shipped from the factory, or if you saved the previous configuration, you can simply restore that file to the Director group.

You can reinstall Junos OS with or without access to the QFabric switch default partition.

1. Ensure that you have an emergency boot device (external USB device) with Junos OS installed to use during the installation.
2. Insert the external USB device in the USB port.

   A menu like the following appears once you are connected to the Director group:

   Juniper Networks QFabric Director Install/Recovery Media
   

   -  To boot from the USB device, wait 10 seconds or press the <ENTER> key.

   -  To reinstall the QFabric software on this Director device, type: install and then press the <ENTER> key. 

   -  To perform a network installation on this Director device, type: network <ENTER>

3. To reinstall the software on the Director group, type install and then press Enter.

   The Director group copies the software from the external USB device, occasionally displaying status messages. Copying the software can take up to 10 minutes.

4. Remove the external USB device when prompted, and then press Enter.

   The Director group then reboots from the internal flash storage on which the software was just installed. When the reboot is complete, the Director group displays the login prompt.

5. Create a new configuration as you did when the Director group was shipped from the factory, or restore the previously saved configuration file to the Director group.

1. Ensure that you have an emergency boot device (external USB device) to use during the installation.
2. Log in to the QFabric switch default partition.
3. To download the software from the external USB device, issue the request system software download command and specify the path and the package name on the external USB device:
   request system software download /media/usbdisk/jinstall-qfabric-11.3R1.4.rpm
4. To install the software, issue the request system software add package-name component director-group reboot command and specify the name of the software package:
   request system software add jinstall-qfabric-11.3R1.4.rpm component director-group reboot

   The Director group copies the software from the external USB device, occasionally displaying status messages. Copying the software can take up to 10 minutes.

5. Remove the external USB device when prompted, and then press Enter.

   The Director group then reboots from the internal flash storage on which the software was just installed. When the reboot is complete, the Director group displays the login prompt.

6. Create a new configuration as you did when the Director group was shipped from the factory, or restore the previously saved configuration file to the Director group.