HyNEX Ltd and Optical interconnection
Token Ring
The token is a special 3 byte sequence that indicates the state of the ring; it may mark the ring as in-use, or free (anyone can use it), or health status. Any client needs to have access to the token before transmitting or receiving on the ring network.
try a promise ring
token ring uses a physical star and a logical ring ,while FDDI uses a physical star/ring and a logical ring.
In a token ring network, there is typically only one token circulating at a time. This token is a special data packet that grants permission to a device to transmit data on the network. If a device has data to send, it captures the token, sends its data, and then releases the token back into the network for other devices to use. Therefore, there is generally just one token in a properly functioning token ring network.
Token Ring is described by the IEEE 802.5 standard. This standard defines the physical and data link layers for Token Ring networks, which use a token-passing protocol for controlling access to the network. Token Ring networks typically operate at speeds of 4 Mbps or 16 Mbps and utilize a star topology with a token that circulates around the network to manage data transmission.
Token
Both Token Ring and FDDI use the concept of a ring topology structure. However, Token Ring is used in a LAN, and FDDI is used in a MAN.Token Ring is implemented with copper cable (UTP cable) and FDDI uses Fiber Optic cable.Finally, the protocols are very different between the two. FDDI uses a synchronous type of transmission, where Token Ring uses an actual token (a 3 character packet) to control who has access to transmit or receive on the network. FDDI does not use this technique.
Uranus
token passing
Token ring hub
In a token bus network architecture, the nodes at either end of the bus do not actually meet. In a token ring, the network logically functions as a ring, but is wired as a star.