Although there is no consensus on the future internetworking approach, requirements such as security, scalability, and incremental deployment are often considered. We focus on specific proposals for future internetworking such as: Loc/ID split, flat routing, network mobility, multipath and content-based routing, path programmability, and Internet scalability. In this survey, for the sake of completeness, we cover several new protocols for network interconnection spanning both incremental deployments (evolutionary approach) and radical proposals to redesign the Internet from scratch (clean-slate approach). These challenges have attracted significant research efforts in the latest years because of both their relevance and complexity. Among them, many are consequence of unforeseen demands on the original Internet design such as: mobility, multihoming, multipath, and network scalability.

To this end, we first discuss the shortcomings of the Internet's current model. We review the main challenges and survey promising techniques for network interconnection in the Internet of the future. We evaluate our techniques using a combination of event-driven packet-level simulations, and our implementation over the PlanetLab testbed. We have implemented the algorithms using i3 as the forwarding infrastructure. We present scalable and efficient algorithms for distributed tree construction and maintenance, and for reliable packet delivery.

This division of functionality enables our architecture to combine the efficiency of infrastructure-based solutions and the flexibility and deployability of host-based solutions. End-hosts build multicast trees by setting up forwarding state in the infrastructure. In this paper, we present the design and evaluation of a hybrid multicast architecture wherein the infrastructure provides packet forwarding, and the end-hosts implement the control plane. These proposals can be categorized as either infrastructure-based, with the multicast functionality provided by specialized network nodes, or host-based, with the multicast functionality provided by the members of the multicast group itself. The last decade has seen a deluge of proposals for supporting multicast in the Internet.

Indirection nl