Token Ring (3)
media access: Token Passing - information is traveling from station to station and is regenerated by each station; no collisions; possession of the token grants the right to transmit data
priority system: token ring networks use a sophisticated priority system that permits certain users and high priority stations to use network more frequently (frame contains priority field and reservation field)
One selected station works as active monitor: it acts as a centralized source of timing information; removal of faulty frames circling the ring
beaconing algorithm detects and tries to repair certain network faults
frames:
- tokens : 3 bytes in length (start delimiter, access control byte, end delimiter)
- data/command s: vary in size