Overlay network

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

An overlay network is a logical computer network that is layered on top of a 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.

Excerpt from the Wikipedia article “Overlay network”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Ludovic.ferre, CC BY-SA 4.0, via Wikimedia Commons.