LYCOS RETRIEVER 
Ethernet: Mbps Ethernet
built 631 days ago
The 100 Mbps Ethernet was designed more recently than the 10 Mbps alternative. To maintain the same minimum packet size as the earlier, slower version, what should its length specification be? Why should the minimum packet size remain the same?
Source:
An extension of the popular 10Base-T Ethernet standard, Fast Ethernet transports data at 100 Mbps. With rules defined by the IEEE 802.3u standard, Fast Ethernet leverages the familiar Ethernet technology and retains the CSMA/CD protocol of 10 Mbps Ethernet. Three types of Fast Ethernet are available: 100Base-TX, which runs over Category 5 UTP; 100Base-T4 which runs over existing Category 3 UTP; and 100Base-FX, which operates over multimode fiber optic cabling.
Source:
The original work on Ethernet at Xerox PARC used 75 Ohm coaxial cable, and operated at 3 Mbps. The main reason for developing Ethernet was to share very expensive printers. Robert Metcalf (who went on to found 3COM Corp) was working at Xerox PARC, and is often considered the "father" of Ethernet.
Source:
Late collision can be avoided, if the maximum length of the Ethernet network segment is restricted, such that if a collision occurs, it will reach the transmitter before the transmitter completed transmitting the entire frame. In a typical 10 Mbps network, the minimum length of an Ethernet frame is 576 bits (72 bytes) and the maximum length of a single Ethernet network segment is 2.5 kms.
Source:
Included in the Quick Reference Guides are the configuration rules for combining the 10 and 100 Mbps Ethernet media types. This makes it possible for you to verify the configuration of any half-duplex mode Ethernet system, to make sure that it meets the official half-duplex timing guidelines and that it will operate correctly.
Source:
MORE ABOUT
Mbps Ethernet