Active Network Definition  A programmable network is a packet   transmission network. It's an open an extensible architecture. The goal is a very quick method for the integration of the new services . It's an extensible network, it's easy change the comportment and dynamically. (following how the clients use it) The actual networks (1/2)   For the new services, the cost is high and the deployment is slow. The standardization is necessary  Ex : IPV6, Diffserv  Re-use the actual services  Ex : UDP et TCP   A transparent and passive network No interaction between the semantic of data and the service's live. The actual networks (2/2)   The network devices are closed  Programmable only with the customer interfaces  No modifications dynamically Lack of interoperability  Between the different customers (Router)  Between the routers and the services customers with add value New model for the network Active network To/From To/From/How