12/31/2023 0 Comments Crossover cable![]() The purpose of these standards is to ensure that all ethernet cables of a given pinout are made with the same wire configurations. The two standard wire pinout options are called T568A and T568B. When it comes to ethernet cables, there are two standard ways of laying out the wires inside them. Each wire in the cable will have a different role depending upon its position inside the connector.įor example, some wire positions are meant for sending data to the other device attached to the cable, while others are designed to receive data from the other device attached to it. That’s because each wire location within an ethernet cable is meant for a specific purpose. What gives? Why are the wires not in the same pattern at both ends? If I compare the wires inside the ends of a crossover cable, things start to go off the rails. Now, if I compare the colors of the wires inside a straight through ethernet cable, both ends will have the same pattern of colors. ![]() If you look closely at the end of an RJ45 connector, you can see the colors of the wires going into the connector. These connectors are called RJ45 connectors. At each end of the cable, the 8 copper wires are aligned next to each other, where they’re fed into a connector. The 8 copper wires are used to transfer data from one device to the other. Inside an ethernet cable, there are generally 8 copper wires that are twisted together in pairs. Let’s start with the basics to make sure we’re all on the same page here. It’s all about the wiring within the cable. How do crossover cables work?Ĭrossover cables were designed to allow for two of the same type of device to communicate with each other. This is where the crossover cable came in to save the day. It was like trying trying to call yourself on the telephone. two computers wired together), however, things didn’t go so smoothly. Whenever they had to communicate with the same type of device over a wire (e.g. As a result, that’s what they were made for. Most of the time, computers, routers, and switches were wired to different device types. An ethernet switch to an ethernet switchĬrossover cables were needed in the first place because of how the above devices communicate.To put it simply, most of the wired connections you’ve made in your life require straight through cables.Ĭrossover cables differ in that they’re meant to connect two of the same type of device. You’d also need a straight through cable to connect: For example, if you wanted to connect your computer to a router, you’d need to use a straight through cable. Straight through ethernet cables allow two different types of devices to communicate. The difference is that crossover and straight through cables are designed to work with different devices. They allow devices to communicate through a wire instead of wirelessly. This answer might be a buzzkill, but crossover ethernet cables provide the same benefit as straight through cables. What are crossover ethernet cables in the first place? What makes them so special compared to a straight through cable? What is a crossover ethernet cable?īefore we dive into how they’re used (or not used) today, let’s take it from the top. In this post, I’ll explain the details of how crossover cables work, as well as why you probably don’t need to use them anymore. Whether you use a crossover or regular ethernet cable (also called a straight through cable), the device will be able to communicate with the other device it’s connected to. Modern technology has enabled devices to automatically adjust the way they communicate so it doesn’t matter what type of ethernet cable is used to connect them. If you have relatively modern equipment in your network, you won’t need to use crossover cables at all. What does that mean when it comes to crossover ethernet cables? When should crossover cables be used today? It’s not as complicated as it used to be. Things have changed when it comes to crossover ethernet cables. Your devices wouldn’t be able to communicate with each other. If you weren’t using the right cable, you’d be out of luck. In order for your network to work properly, you had to know when to use a regular cable and when to use a crossover cable. The special type of cable I’m referring to here is a crossover ethernet cable. Later in the day, if you wanted to connect that computer to another computer, you’d have to use a special type of ethernet cable. Ethernet cables used to be a lot more complicated than they are today.ĭepending upon the devices you were connecting, you’d need to use different ethernet cables in order for them to communicate correctly.įor example, let’s say you had your computer connected to a router with an ethernet cable.
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