Troubleshooting a Routing Engine on the JCS1200 Platform

Problem

You cannot run the Junos OS on a Routing Engine on the JCS1200 platform and you cannot reload the software using the Junos OS CLI.

Solution

Manually load the Junos OS on the Routing Engine in the JCS chassis using the media tray.

Note: This procedure requires that you issue commands on the JCS management module CLI and to interactively respond to prompts from the Junos OS through a console port session on the Routing Engine.

Caution: When you manually reload the Junos OS, the hardware disk and CompactFlash card are erased.

1. Obtain the Junos OS package from the Juniper Networks support Web site and transfer the software onto a USB device. For more information, contact your Juniper Networks support representative.
2. Insert the USB device with the Junos OS into either USB port on the media tray on the JCS chassis.
3. To select the Routing Engine, either press the CD button on the Routing Engine or issue the following command using the JCS management module CLI. In this example, the Routing Engine to be reloaded is in slot 1 on the JCS chassis.
   system> mt -b 1
4. To restart the Routing Engine and begin loading the software, issue the following command:
   system> reset -T blade[1]
5. Type y and press Enter when the system issues the following prompt during the console session on the Routing Engine:

   WARNING: The installation will erase the contents of your disks. Do you wish to continue (y/n)?

6. When the system issues the following prompt on the console port session:

   Eject the installation media and Hit [Enter] to reboot?

   1. Using the JCS management module, issue the following command to deselect the media tray:
      system> mt -b 0
   2. On the console port session on the Routing Engine, press Enter to reboot the system.
7. When the system has rebooted, log in as root with no password:

   Amnesiac (ttyd0)
   

   Login: root
8. You can now load an existing configuration file onto the Routing Engine or configure the system with basic system properties.