Token Ring Physical Operation
Ring is emulated through TR hub by passing frames from station to station (1, 4 or 16Mbps).
When a station has a problem or is pulled from the ring, that port is “wrapped” to allow the ring to continue
An active hub retimes and regenerates the signal, a passive hub connects the ring
When a station inserts at the wrong speed or loses track of its neighbor, a beacon condition is created on the ring