I currently have Windows Server setup with one physical ethernet port (eth0) as an external VLAN trunk connected to a Hyper-V virtual external switch for VMs to share with the host. The host uses specifically VLAN1 while the virtual switch allows VMs to use and share from VLAN1 to VLAN3.
Now I want to connect another physical ethernet port (eth1) to the same virtual switch or something similar so I can connect an external network device to it (eth1) and have the communication be able to pass through the other physical external VLAN trunk (eth0).
Typically, it would be a much easier task to do if it was on a router configuration, but I can't figure how I go about doing the same thing on Windows. The configuration for network adapters in the current network setup confused me, let alone the new network configuration.
If you need routing on Windows Server, you can install RRAS. Using Powershell,
(reboot is needed)
If you need the Admin Tool for it (on the same server or somewhere else):
The routing component:
Then from Server Manager's tools, you can start Routing and remote access and configure the server for LAN routing.