iRule after upgrading 9.1.X to 9.3.x

citizen_elah , Thank you for your advise.

 

I don't have a test environment, the 2 BIG-IP systems ( HA pair) are in a production environment.

 

So I will have to do the upgrade on live.

 

 

But I have another question, a more general about upgrading HA pair from 9.1.X to 9.3.x.

 

 

This is how I want to proceed ;

 

 

1. Upgrade the standby unit and failover to it.

 

(9.1.2 --> 9.3.1 + HF1 ).

 

2.upgraded unit becomes Active unit.

 

 

so after the above actions, i have the below setting :

 

active unit ( version 9.3.1 + HF1) and standy unit ( version 9.1.2 ).

 

 

I plan to keep the above configuration for about 1 week, then if there are problems, I failover to standy unit which is still version 9.1.2.

 

 

HA configuration(active-standby) with 2 differents versions of BIG-IP will work fine ??

 

Active ( 9.3.1 ) and Standby ( 9.1.2) HA is possible ??

 

 

thank you.

 

 

Sako.