Initial Thoughts on Custom Network Processing Via Waypoint Services
Network operators want additional functionality from the networks they manage. The current approach to add functionality is to deploy middleboxes. Unfortunately middle-boxes raise concerns regarding robustness, correctness, and efficiency due to their need to be deployed at chokepoints. This paper provides some initial thoughts for solving the middlebox problem in an architectural way. The authors believe that waypoint services are the correct way to add functionality to a network. Network processing can be modeled as classification followed by action. Additional functionality should be added to the network through a service model exposed as new actions. Services would be implemented at waypoints which reside off the normal packet path; routers can send traffic to those services for additional processing.