Token Ring Protocol
This method involves token passing. Token passing is a
communications network access method that uses a continuously repeating frame (the token)
that is transmitted onto the network by the controlling computer. When a terminal or
computer wants to send a message, it waits for an empty token. When it finds one, it fills
it with the address of the destination station and some or all of its message.
In Token Ring topology, the computers are connected so that
the signal travels around the network from one computer to another in a logical ring. A
single electronic token moves around the ring from one computer to the next. If a computer
does not have information to transmit, it simply passes the token on to the next
workstation. If a computer wishes to transmit and receives an empty token, it attaches
data to the token. The token then proceeds around the ring until it comes to the computer
for which the data is meant. At this point, the data is captured by the receiving
computer. Token Ring allows for Ring topologies.
