Product : Red Hat, RHEV/3.6, RHEV
Feature : VLAN, Networking, Network and Storage
Content Owner:  Roman Macek
Summary
Yes (via host hooks)
Details
Currently PVLAN support in RHEV is done via host hook.

Background: Hooks are scripts executed on the host when key events occur. The creation and use of VDSM hooks to trigger modification of virtual machines based on custom properties specified in the Administration Portal is supported on Red Hat Enterprise Linux virtualization hosts. The use of VDSM Hooks on virtualization hosts running Red Hat Enterprise Virtualization Hypervisor (RHEV-H) is not currently supported.