PA-5050 8.1.11 Inter Vsys traffic

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PA-5050 8.1.11 Inter Vsys traffic

L2 Linker

Hi all,


We got a Palo Alto 5050 active/passive HA configuration with two vsys with a lot of inter-vsys traffic.

Our DP1 is running at 100% during working hours.


I am convinced that the problem is that inter-vsys traffic can't be offloaded to hardware.


If i configure physical interface 1 and 2 to vsys1 (L3) and physical interface 3 and 4 to vsys 2 (L3), connect them with a physical cable, aggregate these two links (port-channel) and route inter-vsys traffic over that physical link. Would that be a good practice? Now traffic can be offloaded to HW.


Thank u for your feedback!


L4 Transporter

Hello @MarcelBolleboom   ,


If your environment only have 2 vsys  and it won't get any bigger.  That is one way to resolve the inter-vsys performance issue.   


Do you have a diagram that can help us understand the problem?    


Have you able to identify the traffic pattern?  Is there a specific zone/subnet in one vsys that all the systems from the other vsys need to access?  





Thank u for your reply.

All internet traffic from the LAN uses the inter-vsys connection (red) for internet. Best way to tackle this would be to consolidate the two vsys to one but that would be a large operation.


Inter vsys.png

How is the inter-vsys connection currently setup?    and the proposal fix look like?

Current: Direct inter vsys routing between two vsys on same physical device.

New: Using 4 interfaces (2 per vsys) and aggregate them to form a 2 Gbit link (UTP). SFP 10 Gbit interfaces are all in use. Traffic won't exceed 2 Gbit. Make it a L3 connection.


So, direct cables from one interface to another between two vsys on same physical device.

thanks!  let's us know if the change helps!

i will

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