CMUlab is a network testbed facility at Carnegie Mellon University. It consists for three testbeds that use the Emulab software for testbed management and control. The facilities include a cluster a rack-mounted PCs, a residential wireless testbed called Homenet and the CMU wireless network emulator testbed. The wireless emulator testbed is publicly available and has been used by a number of external groups and to teach wireless networking courses. The other two testbeds are currently still private.