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An overlay network is a computer network that is layered on top of another (logical as opposed to physical) network. The concept of overlay networking is distinct from the traditional model of OSI layered networks, and almost always assumes that the underlay network is an IP network of some kind.
Overlay network, a computer network which is built on top of another network; Video overlay, techniques to display video on computer display; Hardware overlay, one type of video overlay that uses memory dedicated to the application; Another term for exec, replacing one process by another; Overlay (programming), a technique to reduce the amount ...
A sample overlay network. An overlay network is a virtual network that is built on top of another network. Nodes in the overlay network are connected by virtual or logical links. Each link corresponds to a path, perhaps through many physical links, in the underlying network. The topology of the overlay network may (and often does) differ from ...
Overlay network diagram for a structured P2P network, using a distributed hash table (DHT) to identify and locate nodes/resources In structured peer-to-peer networks the overlay is organized into a specific topology, and the protocol ensures that any node can efficiently [ 28 ] search the network for a file/resource, even if the resource is ...
Tor [6] is a free overlay network for enabling anonymous communication.Built on free and open-source software and more than seven thousand volunteer-operated relays worldwide, users can have their Internet traffic routed via a random path through the network.
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A Software-Defined Wide Area Network (SD-WAN) is a wide area network that uses software-defined networking technology, such as communicating over the Internet using overlay tunnels which are encrypted when destined for internal organization locations.