Is there an OpenStack installer that offers the option of using tagged VLANs during the installation? I'm building an OpenStack environment that uses redundant hardware, but I have limited space for switches. The idea that I had was to use tagged VLANs for the external network. But all of the installers that I've seen, they only work if each physical port on the server corresponds to a network. IE, one of my physical ports on my server needs to be connected to a management switch, another port needs to be connected to the switch for the external network, etc. I'd like to reduce the physical footprint of the switches, by using a single switch with tagged VLAN: 1) one VLAN for the management network 2) one tagged VLAN for the external network 3) etc Taken to the extreme, it seems like it might be possible to use as few as one or two physical ports for all of the OpenStack networks. Is this possible, and if so, which OpenStack distribution offers this?