Answer Description
In a Mesh network topology every network node (router, switch, hub, etc) is connected to every other network node. If a connection breaks, the node can easily communicate with another through multiple existing connections. In reality this is too complex to implement in a large network, but it is still very common to see a hybrid network with several mesh style layers.
Wikipedia
A mesh network is a network topology in which each node relays data for the network. All mesh nodes cooperate in the distribution of data in the network. It can be applied to both wired and wireless networks.
Wireless mesh networks can be considered a type of Wireless ad hoc network. Thus, wireless mesh networks are closely related to mobile ad hoc networks (MANETs). Although MANETs are not restricted to a specific mesh network topology, Wireless …
Mesh networking - Wikipedia, the free encyclopedia