HA4 firewalls

[SylviaPudimat]

Hi,

is there any reference which firewalls do have the HA4 option?

Can´t find any information about.

Thanks in advance!

[PavelK · Accepted solution]

Hello @SylviaPudimat

HA4 is used for Firewall clusters HA Clustering Overview. This is supported only by models of Firewall mentioned in the link. In these Firewalls you will find the option for HA4 under: Device > High Availability > Cluster Config. In all other Firewall models that do not support clustering this option is not available under High Availability configuration.

Kind Regards

Pavel

[SylviaPudimat]

Thanks Pavel, this is exactly what I searched for. It was confusing to me, because the HA Pair and HA Cluster options are sometimes mixed up in the documentation.

[SylviaPudimat]

I have one question beyond. The link given describes in the picture, that there is a L2-connection between DCs (guess some VXLAN/EVPN). Within the text it says: "HA clusters support a Layer 3 or virtual wire deployment."
Could anyone describe how exactly this is meant and configured? Thanks!

[CosminM]

The HA4 link between cluster nodes is an L2 connection.

"HA clusters support a Layer 3 or virtual wire deployment." This means that on a firewall that is part of an HA cluster, you can only configure Layer 3 or virtual wire security zones for transit traffic. For instance, you cannot use an L2 security zone on such a firewall node.

[SylviaPudimat]

Okay thanks! This document https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-admin/high-availability/ha-concepts/ha-links-and...​
states, that HA2 Link for session sync is L2/Ethertype 0x7261.
Does the same apply for HA4 too? If yes it would be difficult to have devices in between of the two cluster member as Ethertype 0x7261  seems to be "special"...

And next question:
Do this Use Cases for Active/Active HA (Pairs) apply to Cluster configurations t00?
https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/high-availability/set-up-activeactive-ha/...

Thanks!!!