We would like to deploy two VSS clusters, one at our main office and the other at a co-location site. We are currently running two HP switches that handle all of the switching between these sites. We have two connections between the two sites: a 100 meg fiber connection and a internet connection that is layer two VPN'd with two linux openvpn servers. The later connection is obviously much slower so we just set the stp path-cost to be much higher on that connection for fail-over if the fiber goes down. These two sites need to be in the same broadcast domain because certain apps require it (VMware)...that's why we don't stick a router between the two sites. My question is can we still run STP between the two Cisco VSS clusters? Or is there a better/different way to do it?
By default all the ports in VSS can be used to connect to the network. There are 2 types of interfaces that you need to interconnect back2back between virtual-switch nodes - VSL and dual-ACTIVE Fast Hello.
Not sure if I understood your response correctly but prevent deploying single-home devices to the VSS. It is not an recommended network design and may not be able to take complete VSS advantage...