On Thu, Mar 31, 2011 at 1:49 PM, Nataraj <incoming-centos at rjl.com> wrote: > On 03/28/2011 06:26 AM, AemNet wrote: >> I'm not sure I'm understanding your problem, but generally I create the >> vlan interface inside the guests machine. Notice that we use *ONLY* >> tagged vlan so we can use different vlan in each switch port. >> > Thank You. I got it working now. I'm not sure why it didn't work the > first time I tried. > Please share how you got it working. Regarding VLAN tagging, my understanding is that each interface through which the frames pass must support tagging. Thus if the frame passes through a device that does not support tagging then the tag information is lost. I am also using KVM for my virtual appliances and in one of the appliance scenario, I will have to use 2 VLANs on one the 'guest' VM's NIC. Thanks, -- Arun Khan