[CentOS] VLAN support?

Are there any new tools in CentOS 6 to configure VLAN interfaces (where 
the switch passes multiple tagged VLANs over one physical link to the 
host) or is it best to edit /etc/sysconfig/network-scripts/eth?.vlan# 
files manually?

-- 
   Les Mikesell
    lesmikesell at gmail.com