Intel Modular Server, Proxmox and VLAN

Good Morning,

I try to explain the scenario:

I have one IMS with 2 blades (and double switch).

On the blades, Proxmox VE is installed.

I need to split the network with VLAN to separate VOIP traffic.

This is what I will do:

In the VM set the VLAN ID of eth0 to 20

In the main switch (not IMS) I will set the port group 1-10 to vlan 20 and 11-24 to VLAN 10.

Will this be enought or I have to work on the IMS inside switch?

I've forgot to say another important matter:

Office are splitted across two buildings thorught a Fiber Optic media converter where both traffic will go.

Does it work and will be transparent or not?

Thanks