What is Ring Network?

           

A Ring networks is form of circle, at least as for as the nodes are connected. Network transmissions travel from node to node, in one direction only, in a closed, round robin loop. When a transmissions has traveled the full circuit, it has moved from the node that started the transmission to the computer connected to that node and so an until it has gone around the loop and returned to the starting node.

            A Ring network has tow characteristics that are supposed to solve the problems or bus network: It’s closed network, in which only one message (the token) can circulate at any given time, which makes it impossible to have collisions. To transmit, a node connected to the network must read the token when it arrives and retransmit it if it hasn’t reached its destination. The terminal that’s the destination of token must send an Acknowledgement. This doesn’t have to be send to specific address, because only the terminal that send the message is waiting for an acknowledgment. Other terminals simply retransmit it. This technology seems to solve the problems simply and efficiently there is, however, a downside to it: Nothing prevents one terminal from trying up the entire network, because all the other terminal (Node) are waiting for message sender to free token.

            Each node communicates directly with only two others; the node that transmits to the node it transmits to. When a node has some information to transmit, it waits until it receives the token.

            Ring network don’t require massive amounts of  cabling a fancy hardware to its implement and one of their great advantages is in giving each node an equal opportunity to transmit.