Before revision: We consider a switch with uniform traffic operating under the MaxWeight scheduling algorithm . This traffic pattern is interesting to study in the heavy-traffic regime since the queue lengths exhibit a multi-dimensional state-space collapse  .
After revision: We consider a switch with uniform traffic operating under the MaxWeight scheduling algorithm , under any traffic pattern such that all the ports are loaded. This system is interesting to study in the heavy-traffic regime since the queue lengths exhibit a multi-dimensional state-space collapse .