千兆以太网交叉线

Crossover Cable is used to connect two same type devices back to back to provide a network connection. This can be also called a direct ethernet connection. What makes crossover cable different is the connecting devices are the same type as two computers or two routers etc where the data communication lines should be reversed. The signals should be crossed intentionally where they send signal will be receiving a signal and receive signal will send a signal for the counterpart system.

Crossover Cable用于背对背连接两个相同类型的设备以提供网络连接。 这也可以称为直接以太网连接。 交叉电缆的不同之处在于，连接设备的类型与两台计算机或两台路由器等的类型相同，其中数据通信线路应反向。 信号应有意地交叉，在这些信号中，它们的发送信号将接收信号，而接收信号将向对方系统发送信号。

交叉布线方案 (Crossover Wiring Scheme)

There is two pinout schemes named T568A and T568B . A crossover cable uses both of these scheme end of the ethernet cable. You can see these pinout in the following diagram.

有两种引脚分配方案，分别为T568A和T568B 。 交叉电缆使用以太网电缆的这两个方案端。 您可以在下图中看到这些引脚。

T-568A颜色引脚(T-568A Color Pinout)

• White Green白绿
• Green绿色
• White Orange白橙
• Blue蓝色
• White Blue白蓝
• Orange橙子
• White Brown白棕
• Brown棕色

T-568B颜色引脚(T-568B Color Pinout)

• White Orange白橙
• Orange橙子
• White Green白绿
• Blue蓝色
• White Blue白蓝
• Green绿色
• White Brown白棕
• Brown棕色

We can see the crossover cable connection more clear in the following diagram. The following connections are made to make a crossover cable.

在下图中，我们可以更清楚地看到交叉电缆的连接。 进行以下连接以构成交叉电缆。

• Connector A Pin 1 <-> Connector B Pin 3连接器A引脚1 <->连接器B引脚3
• Connector A Pin 2 <-> Connector B Pin 6连接器A引脚2 <->连接器B引脚6
• Connector A Pin 3 <-> Connector B Pin 1连接器A针3 <->连接器B针1
• Connector A Pin 6 <-> Connector B Pin 2连接器A引脚6 <->连接器B引脚2

交叉电缆的使用(Crossover Cable Usage)

Crossover cable is used for different cases where which are depicted with the following diagrams.

交叉电缆用于不同的情况，如下图所示。

• Switch to Switch切换到切换
• Switch to Hub切换到集线器
• Hub to Hub集线器到集线器
• Router to Router路由器到路由器
• Router to PC路由器到电脑
• PC to PC电脑到电脑

跳线(直)电缆与交叉电缆(Patch (Straight) Cable vs Crossover Cable)

Crossover cable is the alternative of the Straight or Patch Cable. They are using the same cables with different pinouts were used for a different type of connections.

交叉电缆是直电缆或跳线的替代产品。 他们使用的是相同的电缆，不同的引脚分配用于不同类型的连接。

• The crossover uses different pinout for the ends like if one end is T-568A another end should be T-568B but in straight cable, both ends will be the same pinout like if one end is T-568A the other end will be T-568A too.分频器的两端使用不同的引脚分配，例如一端是T-568A，另一端应该是T-568B，但是在直电缆中，两端将是相同的引脚，就像一端是T-568A另一端是T- 568A也是。
• Crossover cable will be used the same type devices where Straight cable is used for a different type of devices where a crossover of the pins are not required.交叉电缆将与直电缆用于相同类型的设备，而不同类型的设备则不需要引脚交叉。

自动分频器的自动MDI标准 (Auto MDI Standard For Automatic Crossover)

Auto MDI is a technology where the cable type can be detected and configured automatically with the software on the network interface card. This is very useful where a crossover cable can be used to connect different types of devices by using Auto MDI technology. Auto MDI is provided by the network interface card. Today most of the network ports like modem, pc, laptop, switch, router use the auto MDI where there is no need to find proper cable type.

Auto MDI是一项技术，可以使用网络接口卡上的软件自动检测和配置电缆类型。 这在使用交叉电缆通过Auto MDI技术连接不同类型的设备时非常有用。 自动MDI由网络接口​​卡提供。 如今，大多数网络端口(如调制解调器，个人计算机，笔记本电脑，交换机，路由器)都使用自动MDI，而无需查找正确的电缆类型。

翻译自: https://www.poftut.com/what-is-crossover-ethernet-cable-compare-crossover-with-patch-cable/

千兆以太网交叉线