overlay network


Also found in: Wikipedia.

overlay network

A logical network that runs on top of another network. For example, peer-to-peer networks are overlay networks on the Internet. They use their own addressing system to determine how files are distributed and accessed, thus providing a layer on top of the Internet's IP addressing.

A quality of service (QoS) system is also called an overlay network, because it uses an additional addressing mechanism that may change the route normally taken in the underlying network. See also over-the-top broadcasting and over-the-top messaging.
References in periodicals archive ?
Spurred by the observation that a few relay nodes with high betweenness centrality can provide more optimal routes for a large number of node pairs, we propose a resilient routing overlay network construction method by introducing Super-Relay nodes.
The Sixth International Conference on Peer-to-Peer Computing (P2P2006) is the most recent in a series of annual conferences concerned with overlay network technologies.
The Company offers competitive local exchange carrier services using its overlay network in Moscow, Kiev, St.
com), which has established an overlay network by peering arrangements with many major backbones, along with a network operations center that monitors backbone conditions in real time and controls their customers' routing accordingly.
The Riverbed Cascade product family is an application-aware NPM solution to leverage this performance information about overlay network and UDP-encapsulated traffic to provide comprehensive and unified visibility across the WAN, LAN, virtual overlay networks and data centers in the cloud.