A network topology in which additional networking components are used to provided redundant data paths. This topology provides fault tolerance - if a wire, hub, switch, or other component fails, data can travel along an alternate path.
A diagram of a mesh network might resemble a portion of a fishing net. A mesh topology is most often used in large backbone networks in which failure of a single switch or router can result in a large portion of the network going down. Mesh networks can use the following topologies:
Graphic M-8. Typical mesh topology of networks connected by routers.