Ethernet Technologies
From Mycomputer Notes
Revision as of 06:50, 5 March 2006 by 70.82.223.90 (Talk)
| MEDIUM | Maximum Theoretical Bandwith | Maximum Physical Distance | |
| 50-ohm coaxial cable | 10 BASE2(Ethernet,Thinnet) | 10 Mbps | 185 m |
| 50-ohm coaxial cable | 10 BASE5 (Ethernet,Thicknet) | 10 Mbps | 500 m |
| Category 5 UTP | 10 BASE-T(Ethernet) | 10 Mbps | 100 m |
| Category 5 UTP | 100 BASE-TX (Ethernet) | 100 Mbps | 100 m |
| Category 5 UTP | 1000 BASE-TX(Ethernet) | 1000 Mbps | 100 m |
| Multimode optical fiber | 100 BASE-FX (62.5/125 um) | 100 Mbps | 2000 m |
| Multimode optical fiber | 1000 BASE-SX(62.5/125 um) | 1000 Mbps | 220 m |
| Multimode optical fiber | 1000 BASE-SX (50/125 um) | 1000 Mbps | 550 m |
| Single Mode optical fiber | 1000 BASE-LX(9/125 um) | 1000 Mbps | 5000 m |
Contents |
10BASE5
10BASE5 transmitted 10Mbps over a single thick coaxial cables thus giving the name of Thicknet
- First medium used for Ethernet
- Part of the original 802.3 standard
- Inexpensive and do not required configuration(no needs for hubs to extend the length of systems)
- Technologoy is very sensitive to signal reflections
- Cable-dependent across the whole collision domain and it represents a large single point of failure.
- 10BASE5 uses Manchester-encoded signals.
- Other specifications or limitations are:
- Only one station can transmit at a time (collision will occur)
- 10Base5 can run only in half-duplex mode (subject to CSMA/CD rules)
- 100 stations & including repeaters can exist on any individual 10Base5 segment.
10BASE2
Introduced in 1985 and because of its smaller size, lighter wight, and greater flexibility ,it was easier to install than 10BASE5 because of its thinner cable is was known as Thinnet.
- Also know as 802.3a
- Still exist in legacy networks
- Low cost and lack of need for hubs are attractive
- The computer were linked together bu a series of coaxial cables. These cables were attached by BNC connectors to a t-Shape connector on the NIC.
- Because all the computers were attached to a single cable this type of design was a bus designed.
10BASE-T
- Originally half duplex protocol, full duplex feature was added later.
- 10base-T was running with CAT 5 UTP cable
- 10Base-Network are alive with a Link Pulse.
