2% of my Brain

To upgrade Junos on a M-series Juniper with redundant routing engines you do it the following way.

1.  Log in to the master Routing Engine.

2.  Enter the JUNOS software configuration mode:

	{master}

	marcel@re0.lab2> configure

3.  Disable Routing Engine redundancy.

	{master} [edit]

	marcel@re0.lab2# delete chassis redundancy

4.  Save the configuration change on both Routing Engines.

	{master} [edit]

	marcel@re0.lab2# commit synchronize and-quit

5.  Log in to the backup Routing Engine.

       {master}
        marcel@re0.lab2> request routing-engine login other routing-engine

	{backup}

	marcel@re1.lab2> request system software add

	/var/home/marcel/jinstall-8.xxx.x-domestic-signed.tgz reboot

6.  Switchover to the other Routing Engine to change the role.

       {backup}
        marcel@re1.lab2> quit

       {master}
       marcel@re0.lab2> request chassis routing-engine master switch
      
       marcel@re0.lab2>

7.  Install the new software version on the Backup Routing Engine.

	{backup}

	marcel@re0.lab2> request system software add

	/var/home/marcel/jinstall-8.xxx.x-domestic-signed.tgz reboot

8.  Enable Routing Engine Redundancy again 

	{master}

	marcel@re1.lab2> configure

	[edit]

	marcel@re1.lab2# rollback 1

9.  Save the configuration change on both Routing Engines

	[edit]	marcel@re1.lab2> commit synchronize and-quit

10.  If you are satisfied that the new software is running smoothly

                     {master}

	marcel@re1.lab2> request routing-engine login other routing-engine

	{backup}

	marcel@re0.lab2> request system snapshot

	{backup}

	marcel@re0.lab2> quit

Juniper, Networking, Work