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Network Topologies: Mesh This lesson discusses different types of topologies typically seen on a Local Area Network (LAN). When we are discussing topologies, essentially we are talking about the way computers are connected; what they look like and how they send and receive data. There is physical topology and there is logical topology. This lesson focuses specifically on mesh topology. In mesh topology, some nodes are connected to more than one node and there are fully meshed and partially meshed set ups. In fully meshed topology, there are computers connected to more than one node. In partial meshed topology, some computers are connected to all the computers, while some computers are just connected to one other computer. Mesh topology allows for your traffic room so more data can be passed on. However, it can be expensive to set up and difficult to maintain.