Adding an internal VLAN for VMs/CTs only

[buco]

Hi,

I've been toying for a week now with ProxMox. I'm not a networking guy so I'm a bit puzzled what I should do to achieve the following:

My current network is just a single LAN ( no VLANS) with subnet 10.10.10.0/24. I want to create an additional VLAN inside my proxmox host so I can put (test)VMs in that VLAN. So basically all my devices are on 10.10.10.0/24 and I want 10.10.20.0/24 to be my testing network. I have a single NIC enp0s25 which is connected to vmbr0.

How should I proceed so that I have a new VLAN where ProxMox routs the traffic correcly between the 2 VLANS. I'm aware I should configure my clients in 10.10.10.0/24 so they know where to rout 10.10.20.0/24 traffic to.

 

[floh8]

I understand u have a single PVE. U can configure a second bridge without ethernet port. This network is privat and without connection to the internet and the vmbr0.
If u want forwarding between vmbr0 and vmbr1 then u have to use Layer 3 forwarding with Open vSwitch.