CSMA CD in Ethernet
In CSMA/CD, minimum length of packet to detect collision, L >= 2 * Tp * Bandwidth
example:Determine the maximum length of the cable (in km) for transmitting data at a rate of 500 Mbps in an Ethernet LAN with frames of size 10,000 bits. Assume the signal speed in the cable to be 2,00,000 km/s.
L(length of the cable)<=(Data size*Signal speed)/(2*Bandwidth)
L<=(10,000 bits * 2 *108m/s)/(2*500*106b/s)