a Hybrid Network Testbed
Testbed@TWISC (i.e. Testbed@NCKU) is an integrated network emulator based on the Emulab system authorized from the University of Utah since 2005. It is built with domestic-manufactured hardware and customized software environment and can be accessed through a simple Web interface. This testbed provides heterogeneous nodes for network researchers which fulfills the requirements of being quarantined, closed, recordable, controllable and storable on virtualized environment. All experiment nodes are capable of running multiple operating systems, or as a simulated router, traffic-shaper or traffic-generator. After experiment creation, each user can independently control all resources including owning root access on all machines in the experiment. All the software you run on it, including all bits on the disks, are replaceable and entirely your choice. The same applies to the network characteristics, including its user configurable topology.