HA, Active-Active or Active-Passive

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HA, Active-Active or Active-Passive

L2 Linker

Dears Expertise,

we have 2 PA-3220, and we think to configure HA between those devices,

now what is the best practices for mentioned topic   

Active-Active or Active-Passive

just i want to know what is the essential difference between them, when i need to use Active-Active or Active-Passive



Community Team Member

Hi @Mahmoud-Osama ,


For deciding between using active/active or active/passive please check the following page where the differences between the different HA modes is explained:


HA modes 


Cheers !



LIVEcommunity team member, CISSP
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Cyber Elite
Cyber Elite

Hi @Mahmoud-Osama ,


Choosing type of HA mode (Active-Passive or Active-Active) depends on the different use cases and requirements. Active-Passive is comparatively simple design.


One of the preferred reasons to use Active-Active setup is when you have Asymmetric Routing. Having said that, there are few other use cases of having A-A setup like when you need to load balance traffic on both instances in real time.

Active-Passive mode is mostly preferred one unless you have some specific use cases as given above which can be fulfilled using Active-Active setup only.


Article shared by @kiwi will give you more understanding about the HA modes.


Hope it helps!



thanks for your reply, what i am understanding is as per the article, the active-active mode is not  "Load-balance traffic".


Active/Active mode has faster failover and can handle peak traffic flows better than Active/Passive mode because both firewalls are actively processing traffic.


So, I need to understand what is best for me, Active-Active or Active-Passive

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