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Virtual chassis - JUNOS not in line

‎11-28-2018 04:37 AM

Hi All,

 

We have two QFX 5100 set up in a virtual chassis, one is master and other is backup.

 

Backup is in inactive status in VC and it is because JUNOS versions are different in both.

 

Master is with lower version and backup is with higher version.

 

I want master to be on same version as backup and would like to know if there is a process that we can copy JUNOS from backiup and get master turned up on new IOS?

 

thanks in advance

nagasheshu

7 REPLIES 7
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Junos

Re: Virtual chassis - JUNOS not in line

‎11-28-2018 05:37 AM

Can someone help me with this please.

 

Thanks again!!

Nagasheshu.

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Re: Virtual chassis - JUNOS not in line

‎11-28-2018 07:16 AM

I guess you can snapshot the backup and reboot the master from it.

 

https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/qfx-series-system-snapsh...

 

It would safer to just download the firmware and upgrade the master,

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Re: Virtual chassis - JUNOS not in line

‎11-28-2018 10:42 AM

Hi Nag,

 

Do you have the image file on your backup? If yes, you can simply perform a nonstop-upgrade by running this command:

request system software nonstop-upgrade <image-file-location>

 

What is the version you want to load? I suppose this helps...

 

//Nex

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Re: Virtual chassis - JUNOS not in line

‎11-28-2018 10:54 AM

For more, you may refer to this page which I find very useful.

 

NSSU(NonStopSoftwareUpgrade)

 

Mark this as accepted solution if it works for you, that way you help others to easily navigate to the solution!

Kudos are appreciated as well!!

 

//Nex

 

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Re: Virtual chassis - JUNOS not in line

‎11-28-2018 11:01 AM

You can't perform an NSSU on an inactive RE. There's not much you can do to avoid an outage when upgrading the live half of a mismatched VC.

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Re: Virtual chassis - JUNOS not in line

‎11-29-2018 12:37 AM

Thanks for responding Nex.

 

where does the Junos file gets saved it Juniper device?

 

I searched /var/tmp, did not find any.

 

Thanks again!!

Nagasheshu

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Re: Virtual chassis - JUNOS not in line

‎12-04-2018 03:26 AM

Hi Nagasheshu,

 

First of all, to make the 'inactive' member participate in the VC,

1) Either bring the inactive backup to the same version as the master.

2) Or break the VC, upgrade both the same version and form VC again.

 

Now that we have both members running on same version, we can push the image you need to run the VC on to the master switch first and from the master switch, you can perform upgrade on all devices at once. 

 

 

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