Copyright (c) 2008 Don R. Crawley />

Ethernet works on two layers of the OSI reference model. Layer two, also known as Data Link Layer is in the Logical Link Control (LLC) layer and Media Access Control (MAC) split. Ethernet nodes use a globally unique address, called 48-bit MAC address to communicate on the network. Datagrams two layers are called frames. The frame structure with modern Ethernet is the same as that of previous coaxial wired Ethernet networks used a level of backward compatibility.

The original Ethernet operated at a speed of three megabits per second. Today, the typical transmission rate of 10 Mbit / s Ethernet, 100 Mbps and 1000 Mbps (Gigabit Ethernet). 10.000 Mbit / s (10 Gigabit Ethernet) is now beginning to emerge. higher data rates are still under development.

standard Ethernet 10Base-2, also known as Thinnet is used, the coaxial cable is limited to 10 Mbit / s limit and a maximum length of segment of 185 meters. 10-Base 2 has been forgotten, because lower costs and greater simplicity with UTP place (Unshielded Twisted Pair) cabling fallen.

10-Base-5, also known as Thicknet used, the coaxial cable to 10 Mb / s and limited to a maximum segment length of 500 meters. 10-Base-5 is rarely more.

10-Base-T uses twisted pair (UTP) for a maximum of 100 meters (328 feet) at a rate of 10 Mbps unshielded. 10-Base-T, with only two of the four pairs in the cable son.

10-Base-FL uses fiber optic cables up to 2000 meters with a maximum throughput of 10 Mbps.

100 Base-TX UTP cable uses a maximum segment length of 100 meters with a maximum data rate of 100 Mbps. 100 Base-TX uses only two of the four couples son in the cable.

100 Base-FX uses fiber optic cable over a maximum segment length of 2000 meters with a maximum data rate of 100 Mbps.

1000-Base-FX uses fiber optic cable over a maximum segment length of 2000 meters with a maximum data rate of 1000 Mbit / s (gigabits per second).

1000 Base-TX UTP cable uses a maximum segment length of 100 meters with a maximum data rate of 1000 Mbit / s (gigabits per second). In contrast with a 100-Base-TX, 1000 Base-TX uses four pairs of son in the cable.

Categories copper

While there are nine categories of unshielded twisted-pair copper cable (UTP), it really only three that you meet probably in your local network. The others are either outdated or intended for use in backbone networks.

Category 5e: Provides performance of up to 100 MHz and is often used for both 100 Mbps and Gigabit Ethernet

Category 6 The three categories are:. Provides performance of up to 250 MHz, more than double category 5 and 5e

Category 6:. Provides performance of up to 500 MHz, twice the class 6 and is also suitable for 10 Gigabit Ethernet

. What do you have in your network?

building you can make your network cable to the fastest you. Their need for bandwidth over time increase and upgrade of your cable system is disruptive, time consuming and expensive.
Ethernet cabling