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Contributor
Posts: 19
Registered: ‎08-17-2016
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SRX Cluster Upgrade from 11.4 to 12.3

[ Edited ]

Hi, all

 

We are thinking to upgrade Junos OS from V11.4 to 12.3 of SRX 650. We have more than 30 SRXs and these are all clusterd. Can I upgared only one side so that I can easily change(faile over) to the other SRX which is instaled old version  if I see something wrong in upgaraded version?

  

Super Contributor
Posts: 152
Registered: ‎04-08-2015
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Betreff: SRX Cluster Upgrade from 11.4 to 12.3

[ Edited ]

Hi YukaDora,

 

your SRX-Cluster must have 2 identical SRX'es with the same Software Version - upgrading only one isn't working.

Your only option would be to upgrade using the minimal-downtime-method (https://kb.juniper.net/library/CUSTOMERSERVICE/GLOBAL_JTAC/BK17947/LICU_v0.7.pdf) - by splitting the cluster and then upgrading one machine after the other - but in order to form the Cluster again, the Version needs to be identical.

 

This is also described in: https://kb.juniper.net/InfoCenter/index?page=content&id=KB17947&actp=search

Regards
Chris
Twitter: @chsjuniper