Rate and give feedback:  Feedback Received. Thank You!

Rate and give feedback: 

X

This document helped resolve my issue

Yes No

Additional Comments

800 characters remaining

May we contact you if necessary?

Name:  

E-mail: 

Enter a valid Email ID

Need product assistance? Contact Juniper Support

Submit

This site is protected by hCaptcha and its Privacy Policy and Terms of Service apply.

English  

English

Upgrading the Second Routing Engine When Using Chassis Cluster Dual Control Links on SRX5600 and SRX5800 Devices

For SRX5600 and SRX5800 devices, a second Routing Engine is required for each device in a cluster if you are using dual control links. The second Routing Engine does not provide backup functionality; its purpose is only to initialize the switch on the Switch Control Board (SCB). The second Routing Engine must be running Junos OS Release 10.0 or later.

Note: For the SRX5400 Services Gateways, dual control is not supported due to limited slots.

Because you cannot run the CLI or enter configuration mode on the second Routing Engine, you cannot upgrade the Junos OS image with the usual upgrade commands. Instead, use the master Routing Engine (RE0) to create a bootable USB storage device, which you can then use to install a software image on the second Routing Engine (RE1).

1. Use FTP to copy the installation media into the /var/tmp directory of the master Routing Engine (RE0).
2. Insert a USB storage device into the USB port on the master Routing Engine (RE0).
3. In the UNIX shell, navigate to the /var/tmp directory:

   start shell
   cd /var/tmp

4. Log in as root or superuser:

   su [enter]
   password: [enter SU password]

5. Issue the following command:

   dd if=installMedia of=/dev/externalDrive bs=1m

   where

   • externalDrive—Refers to the removable media name. For example, the removable media name on an SRX5000 line device is da0 for both Routing Engines.
   • installMedia—Refers to the installation media downloaded into the /var/tmp directory. For example, install-media-srx5000-10.1R1-domestic.tgz.

   The following code example can be used to write the image that you copied to the master Routing Engine (RE0) in step 1 onto the USB storage device:

   dd if=install-media-srx5000-10.1R1-domestic.tgz of=/dev/da0 bs=1m

6. Log out as root or superuser:

   exit

7. After the software image is written to the USB storage device, remove the device and insert it into the USB port on the second Routing Engine (RE1).
8. Move the console connection from the master Routing Engine (RE0) to the second Routing Engine (RE1), if you do not already have a connection.
9. Reboot the second Routing Engine (RE1). Issue the following command:

   # reboot

   • When the following system output appears, press y:

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

   • When the following system output appears, remove the USB storage device and press Enter:

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