Shashank Shanbhag (University of Massachusetts, US); Tilman Wolf (University of Massachusetts, US)
To support the increasing diversity of systems and protocols in the Internet, modern routers offer a variety of data path processing functions. Such "network services" are easy to implement on a single node, but a network-wide deployment is difficult. We discuss our implementation of a network service architecture that uses novel end-to-end abstractions to access and control advanced data path functions. To make such functions available to end-system applications, we introduce a "service socket" API. We demonstrate the operation of this network architecture and its socket API in the context of a video distribution scenario that we have implemented on a 60-node Emulab testbed.