Operation of CSMA/CD2/2
nThe vulnerable period on the bus is defined as the time from when a station transmits
its first bit to the
time when the furthest station on the bus has sensed the transmission (the worst
case is one propagation delay
on the bus, related to the two
stations attached to the end points of the bus).
nA contention period consists of: one propagation delay for vulnerable period plus another propagation delay for the transmitting
station to detect the
collision (worst case!).