LAGG for virtualized PfSense to an unmanaged switch?


New Member
Aug 14, 2023
Hi folks!

I'm going to be virtualizing my PfSense installation with Proxmox, and am looking for the best LAGG option to an unmanaged switch (i.e. no LACP).
  • I'm assuming it would be better to create a Bond in Proxmox instead of passing through the ports with IOMMU to use the LAGG option in the PfSense config. Is that correct?
  • If I'm creating a Bond, what's the best mode for this use case? If I'm only wanting failover, it looks like the mode I want is "active-backup", but if I'm wanting failover protection and use both physical connections when not failing over, it looks like I should use "balance-alb". Is that correct?
  • If I was incorrect and I should be passing the physical ports through to PfSense with IOMMU, are there any potential pitfalls that I should be watching out for? I'm assuming that using "Load Balance" in the PfSense LAGG config is also the best option in this case?
Any info appreciated


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