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Can't reach full 10Gb when crossing VLAN ?

Hi all,

I'm using Sophos XG Home with dual SFP+ ports that can theoretically reach 10Gb. I have 3 machines with these.

If I perform iPerf3 from Machine X to Machine Y, I get the full 10G when they are on the same VLAN.

If they are not, then the speed drops quite a bit (2.5 Gb ish, sometimes 1Gb).

IPS/DOS are turned off, and when I look at the performance graph, it doesn't look like the CPU is maxed out.

Note, Sophos is running on a VM in Proxmox.

Thanks



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[edited by: Erick Jan at 12:19 AM (GMT -8) on 16 Dec 2024]
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