Straight connection is the same wire sequence at both ends of the same
Network Cable, either 568A standard or 568B standard, and the
Crossover Cable is the same
The two sections of the root network cable use different line sequences; 2. The straight-through cable is used to connect the computer and the switch, router, and the crossover cable is used to connect the computer and the electricity.
brain.
The difference between crossover and straight connection of network cable is:
First of all, we must understand the two standard wire sequences of the network cable crystal head:
From left to right, T568A is: 1-green-white, 2-green, 3-orange-white, 4-blue, 5-blue-white, 6-orange, 7-brown-white, 8-brown.
From left to right, T568B is: 1-orange white, 2-orange, 3-green-white, 4-blue, 5-blue-white, 6-green, 7-brown-white, 8-brown.
1. Straight connection, that is, the same wire sequence is used at both ends of the same network cable, either 568A standard or 568B standard. Cross line, i.e.
Two segments of the same network cable use different line sequences. One end is 568A standard, and the other end is 568B standard. (568A standard: green and white, green,
Orange and white, blue, blue and white, orange, brown and white, brown, 568B standard: orange and white, orange, green and white, blue, blue and white, green, brown and white, brown)
2. The straight-through cable is used to connect the computer and the switch (or HUB), the router and the switch (or HUB). The crossover cable is used to connect the computer and the computer,Routers and routers.
3. Use crossover cables to connect devices of the same type, and use straight-through cables to connect devices of different types. (Because the PC has a routing function, it belongs to
At the third network layer)
There are two standards for twisted-pair termination: T568A and T568B, and there are two main ways to connect twisted-pair cables: straight-through cables and crossover cables. straight Both ends of the crystal plug of the cable follow the T568B standard. Each group of twisted-pair cables has a one-to-one correspondence at both ends, and the crystal plugs of the same color are on both ends.
Keep consistent in the corresponding slots. It is mainly used in the switch (or hub) Uplink port to connect the switch (or hub) ordinary port or exchange
The replacement port is connected to the computer network card. The crystal head of the crossover cable complies with 568A at one end, while the other end uses the 568B standard, which Crystal head 1 and 2 correspond to B crystal head 3 and 6, while A crystal head 3 and 6 correspond to B crystal head 1
2. It is mainly used to connect the common port of the switch (or hub) to the common port of the switch (or hub) or the network card to connect to the network card.
March 16, 2021