After much investigation and testing, I've come to realize that getting VLANs to work for Sophos XG running as a VM on Hyper-V is causing me all kinds of headaches. I had another thread opened about failing to obtain an IP address even though switch and Sophos VLANs and DHCP servers were correctly setup. I know they were correctly setup because once I moved the configuration over to a baremetal install, everything worked as expected and VLANs were also working perfectly. Move this same working config over to a Hyper-V guest and no IP address assignment to devices on VLANs.
I've had Sophos on Hyper-V for years and without any VLANs, it's a beautiful thing. But now I need to segregate the traffic more and VLANs are a requirement.
Has anyone successfully gotten VLANs working on their Sophos XG firewall that is installed as a guest OS on Hyper-V 2012R2? If so, would you mind sharing how you got VLANs to work through the Hyper-V virtual switches? How did you setup your guest OS? Did you need to change anything on the physical LAN port of the server?
The plan is to have a setup with only 2 ports...1 for WAN and 1 for LAN along with several VLANs sharing the same LAN port in Sophos.
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