You can install the Junos OS using the Trivial File Transfer Protocol (TFTP) method. The device is shipped with the Junos OS loaded on the primary boot device. During the Junos OS installation from the loader, the device retrieves the Junos OS package from a TFTP server. The internal media is then formatted, and the Junos OS image is installed.

• Install the Junos OS on the device for the first time.
• Recover the system from a file system corruption.

  Note: Installation from a TFTP server can only be performed using the first onboard Ethernet interface. Installation from the loader-over-TFTP method does not work reliably over slow speeds or large latency networks.

• You have access to the TFTP server with the Junos OS package to be installed.
• That the TFTP server supports BOOTP or DHCP. If the TFTP server does not support BOOTP or DHCP, you must set the environment variables before performing the installation from the TFTP server.
• Functional network connectivity exists between the device and the TFTP server over the first onboard Ethernet interface.

To install the Junos OS image on the internal media of the device:

1. To access the U-boot prompt, use the console connection to connect to the device.
2. Reboot the device.

   The following messages appear:

   Clearing DRAM........ done BIST check passed. Net:   pic init done (err = 0)octeth0 POST Passed
   

   After this message appears, you see the following prompt:

   Press SPACE to abort autoboot in 3 seconds

3. Press the space bar to stop the autoboot process.

   The => U-boot prompt appears.

4. From the U-boot prompt, configure the environment variables listed in Table.

   Table 1: Environment Variables Settings

• Netapp Display NIS info
• Netapp Display YP info

1

nis info

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netapp01> nis info

  NIS domain is cloud.linuxmoz.com

  NIS group cache has been enabled
  The group cache was last updated on Mon Apr 29 02:00:12 BST 2013


   IP Address             Type  State  Bound        Last Polled            Client calls   Became Active
-----------------------------------------------------------------------------------------------------------
192.168.75.4              PREF  ALIVE   YES    Mon Apr 29 08:05:35 BST 2013         0   Fri Mar  1 21:16:37 GMT 2013
192.168.75.5              PREF  ALIVE   NO     Mon Apr 29 08:05:35 BST 2013         0   Fri Mar  1 15:46:37 GMT 2013


      NIS Performance Statistics:
  Number of YP Lookups: 2801489626
  Total time spent in YP Lookups: 541818971 ms, 813 us
  Number of network re-transmissions: 2130
  Minimum time spent in a YP Lookup: 0 ms, 0 us
  Maximum time spent in a YP Lookup: 10064 ms, 679 us
  Average time spent in YP Lookups: 0 ms, 193 us

      3 Most Recent Lookups:
  [0] Lookup time: 0 ms, 1 us   Number of network re-transmissions: 0
  [1] Lookup time: 0 ms, 1 us   Number of network re-transmissions: 0
  [2] Lookup time: 0 ms, 1 us   Number of network re-transmissions: 0

      NIS netgroup (*.* and *.nisdomain) cache status:
  Netgroup cache: ready
  *.* eCode: 0
  *.nisdomain eCode: 5

 NIS Slave disabled