Description

How to upgrade the Jloader (Uboot) image on Qfabric Nodes (QFX3500) and Interconnect devices (IC's) using USB media.

Symptoms

How to upgrade/downgrade Jloader (Uboot) image on Qfabric Nodes and Interconnect devices using USB media.

Solution


To upgrade the Jloader (Uboot) image on Qfabric Nodes (QFX3500) and Interconnect devices (IC's) using USB media, use the following procedure:


1. Copy the jloader image to a USB drive

2. Insert the USB drive to the Qfabric Node (QFX3500)

3. Login to the node from one of the Director Group device (DG's)
   
    a. SSH to one of the DG's
    b. Run "/root/dns.dump" command on DG to look for IP address, or DNS name, of the Node or Interconnect device to be upgraded
    c. Telnet to Node IP or DNS name
    d. Login as root user 
    e. Access to shell on the node device

4. Mount USB device from shell prompt

    root@qfabric% mount_msdosfs /dev/da1s1 /mnt

5. Copy the Jloader (Uboot) image from /mnt directory to /var/tmp directory on the node
   
    root@qfabric% cp /mnt/ <name of the image file> /var/tmp

6. Install the Jloader (Uboot) image using following command,
    
    root@qfabric > request system software add /var/tmp/ <name of the image file>   no-validate reboot 

NOTE:  Reboot is optional. You can reboot the Node during downtime to complete upgrade/downgrade process)

7. Unmount USB device using following command, 
     
    root@qfabric% umount /mnt

8. Repeat step 6 to install the image on alternate partition of the Node or Interconnect devices (IC's)

9. Repeat all steps for Interconnect devices (IC's)