CoreCast: Efficient Live Streaming in the Core-Edge Separated Internet

The increasing bandwidth offered by home broadband connections makes delivering live streaming and IPTV content increasingly more attractive over the Internet. Solutions range from the least bandwidth- efficient unicast point-to-multipoint, through peer-to-peer, to the most efficient multicast delivery mechanisms. But IP multicast does not scale well to the global Internet and today's practical im- plementations are restricted to "walled garden" scenarios, where content is entirely delivered inside the ISP. We propose CoreCast, a new live streaming delivery mechanism that takes advantage of the likely introduction of the Locator/Identifier Separation Protocol (LISP). LISP is being pushed as a possible solution to the Internet's routing scalability problem. We show that with minor modifica- tions to LISP we can have a scalable global multicast solution.