CAT5e, CAT6, CAT6e and other Ethernet cables are common cable products in people's daily life, and are often used to connect computers, routers, switches and other equipment in local area networks. In general, Ethernet cables can be divided into two types: straight-through cables and crossover cables, both of which have different constructions and applications, but both play an important role in a local area network. This tutorial Fast (FS) will introduce both of them. Network cables and how to make them.
What are a crossover cable and a feedthrough cable?
Generally speaking, there are two international standards for the production method of twisted pair, namely EIA/TIA568A and EIA/TIA568B. Before introducing these two lines, let's first understand these two standards. The order of the T568A cables is from left to right: white-green, green, white-orange, blue, white-blue, orange, white-brown, and brown. The order of the T568B cables is from left to right: white-orange, orange, white-green, blue, white-blue, green, white-brown, and brown.
The so-called crossover cable means that one end is made of T586A standard, and the other end is twisted pair made of T568B standard. So one end is the line sequence of the positive line, and the other end is from left to right: white-green, green, white-orange, blue, white-blue, orange, white-brown, brown. (For the positive line, press the orange, green, blue, and brown cables in front of the white line, and exchange 4 and 6 at both ends; press the orange, green, blue, and brown cables at one end of the reverse line. Green, orange, blue, and brown cables are in front of the white cable, 4 and 6 are swapped). It is mainly used to connect two identical devices, such as computer to computer, switch to switch. The feed-through cable refers to a twisted pair cable with both ends using the T568A standard or T568B standard at the same time, so the wire sequence at both ends is the same, and the wire sequence from left to right is: white-orange, orange, white-green, blue, white-blue, green, White-brown, brown. Its role is to connect different devices together, such as a computer to a switch.
The difference between feed-through cable and crossover cable
Simply put, the main difference between a feed-through cable and a crossover cable is the wire sequence standard used when the two ends of the cable are terminated. Both ends of the feed through network cable use the T-568A line sequence standard or the T-568B line sequence standard, while one end of the crossover network cable uses the T-568A line sequence standard and the other end uses the T-568B line sequence standard.
Application of feed-through cable and crossover cable
The application range of feed-thru network cables and crossover network cables is not the same; feedthrough network cables are often used to connect different devices, such as computers and routers, routers and switches, etc., and cross-over network cables are used to connect the same device, such as computers and computers, switches and switches, etc.
