Performance issue with VLAN node and BATMAN involved

[chr1s]

Hi!

I have a weird performance issue and I am not sure how to solve it.
My OpnSense firewall is installed on a proxmox server. On this proxmox server I have two nodes - one LAN node and one node in VLAN 66.
I have an OpenWRT access point connected to the firewall, a 2.5 Gbit connection for LAN and 1 Gbit connection for other VLANs (management, iot, guest, vlan66). This access point is connected via WIFI to 5 other access points via B.A.T.M.A.N. mesh, serving all vlans. However, none access point is part of VLAN66.

I have attached a generalized network map.

I figured out, that my node in vlan66 can only transfer < 5 Mbit/s to nodes connected to other access points in my lan, so I tested with some iperf3 tests.

node vlan 66 -> access point 1 (lan) = 2.3 Gbit/s
node vlan 66 -> access point 2 (lan) = 4-5 Mbit/s

However, if I try this with a lan node on my proxmox setup, I get similar numbers, if I test directly between the access points:

node lan -> access point 1 (lan) = 2.3 Gbit/s
node lan -> access point 2 (lan) = 120 Mbit/s

I have no idea how to further analyze this. Do you have any hints for me, where to look into?

Kind regards,
   Christian

[EricPerl]

How about you share some details about PVE's network configuration? Same for the various VMs involved.