Active network has two meanings: one is called anns network intermediate nodes (such as routers, switches,), not only complete store-and-forward and other network function, and can contain data and code of so-called active packet and ordinary package of computing power is calculated, the network nodes after receives packets from network equipment, executes programs of the packet processing, then send to other network node packets. Second is the user according to network applications and services for network requirements can be programmed to complete these calculations.
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