In a mesh topology every device has a dedicated point to point link to every other device. The term dedicated means that the link carries traffic only between two devices it connects. The mesh topology is also called as complete topology. The mesh topology does not have the traffic congestion problem, because dedicated lines are being used.
These links are not being shared. So the special protocol called Media Access Control (MAC) protocol is not required to be used. This topology has an advantage in terms of data security. It is robust. If one link fails, the rest of the network can continue to function. The fault indication also is easy. The only demerit of this topology is the cable length, the cost of the cable and the associated complexity. Mesh topology is usually implemented as a backbone connecting the main computer of a hybrid network that can include several other topologies