Enable VLAN tagging on RHEV 3.2

What is a best way to enable VLAN tagging on RHEV 3.2 ?

- 2 x RHEV-H hosts (4 nic in bond mode 4)
- Only netwrok is default rhevm network
- Default DC and Default Cluster all on version 3.2
 

Can I click on Networks tab then on "rhevm" and then on "edit" and just click on "Enable VLAN tagging" ?

Of cource then I will need to set VLAN tagging on my switch as well.

Or I need to make new DC, cluster, netwroks and then migrte VMs to it ?

Thanks.