Well, the topic is very self explanatory I believe.. I think that this issue is kind of related to WANs. I decided to focus my thesis on this problem for a ISP in my country, I would like to design a system (Point of Presence, Internet Exchange Point) here in the country able to separate internet traffic, send the international traffic out, and keep the national traffic inside the country, I assume that this is pretty complicated and requires a lot of resources and planning, but it would help me a lot if you could recommend some ways of getting on the road . I assume I may need to simulate a network with switches, routers, servers, etc. This design may be applicable to only one company running very little traffic, or for more than one, depending on the revenue that the project may generate, the basic idea to analize is if this project could lower latency and reduce overall cost for the company. But its also way too important analize how much a project like that may cost to implement. Thanks in advance for your insight!