LAN (Neighborhood Region Network) merupakan jaringan milik pribadi di dalam satu organisasitertentu, gedung atau kampus yang berukuran sampai dengan beberapa kilometer. In a physical Token ring topology, when a cable is open or a station is not operating, the entire network goes down. Token Ring networks employ numerous mechanisms for detecting and compensating for network faults. It started out in 1969 as the Newhall Network, named following the originator of the token ring concept.
This is due to the complicated token passing protocol which increases the difficulty of manufacturing such gear. Token-Ring does give a pretty neat function that permits the computer systems on the Token-Ring network to aid diagnose issues with the logical ring.
These cables interconnect MAUs, repeaters, and most other Token Ring components. Reliability ‘ The topology selected for the network can help find faults by allowing the fault to be detected and isolated. To make the network price effective, it is desirable to decrease installation cost.
To transmit a message, a node inserts a message and location address inside an empty token. If a node getting the token has no info to send, it simply passes the token to the next finish station. The token continues around the ring till it arrives at a node that wants to transmit information.
Type three Token Rings enable up to 72 devices per network and use unshielded twisted pair (Category three, four or five) with RJ-45 connectors. The MAU provides the logical ring that supplies the ring topology applied by the computer systems on the LAN as they pass the token.