Straight through vs crossover cable, which one should I choose? Usually, straight through cables are primarily used for connecting unlike devices. And crossover cables are use for connecting alike devices. Use straight through Ethernet cable for the following cabling:. Straight through and crossover cables are wired differently from each other. One easy way to tell what you have is to look at the order of the colored wires inside the RJ45 connector.
If the order of the wires is the same on both ends, then you have a straight through cable. At present, the straight through cable is much more popular than crossover cable and is widely used by people.
Look for Ethernet patch cables , just come to FS. Your specific need or the application will determine which type of cable would be best for what you are trying to achieve in your network, home office, or data center setup. Straight through cables provide a connection that only allows one end to communicate at any given moment.
These cables are the most common. They are best when connecting two different types of networking equipment. For instance, they are appropriate for connecting a computer to a switch, router or printer. This list should clarify the configuration of cable that you need.
The cable used for both the straight through and crossover formats is exactly the same. The difference between straight through and crossover cable is that in the crossover configuration the color-covered wires that stick out from the frayed ends of the cable are wired into the plug differently at one end.
If the same colored wires connect to the same pins in the connectors at both ends, you can plug either end into your computer and the other end into your router. Away from the CCNA exams, there is one more complication to take into account when you are buying network cables. It can detect which wire transmissions arrive on rather than doggedly listening on pins 3 and 6.
So, if your computer, printer, switch, router or modem has MDI printed on the box, you only need to buy a straight through cable. They simply reverse the pin order of each wire in a cable.
The wire that connects to pin 1 at one end goes to pin 8 at the other end, the wire that goes to pin 2 and the first end goes to pin 7 at the other end. In the middle of the connector pins 4 and 5 are reversed. This format is used for RS connectors that attach to serial ports on computers, printers, or monitors. You may see network wired cables that are gray, while others are yellow, some are blue, and then there are white ones. Most cable networking professionals will tell you that the cable jacket color has no meaning; it is just a question of aesthetics.
They are partially right. The contents of the cable are exactly the same no matter what the plastic jacket color is. There is an industry standard to which these colors are meaningful. Among the standards that it promotes is EIA , which you have already read about. This is where those cable colors originate.
The meanings of cable colors are as follows:. Here is an image of the color coding section of the EIAB standards document where these colors are defined.
Network creation, maintenance, and administration is a very satisfying career path. It is a very technical field and you will encounter a lot of academic and theoretical information on the topic. However, it is also a very important real-world factor that keeps the wheels of commerce turning. As you become more proficient in cable networking theory and practice you will contribute more to the economy and help the world thrive.
Your starting point is knowing how to crimp a connector onto the end of a network cable. Now that you know about the layout of networking cables and how to connect them to devices, you are on your way to becoming a network engineer or a network administrator! We hope you have enjoyed our cabling guide.
A length of UTP cable becomes a crossover cable, a rollover cable, or a straight-through cable when someone crimps a connector to each end of it.
The order in which the inner wires go into the connectors determines whether it is a crossover, rollover, or straight-through cable. Although convention states that a connection between two routers DCE to DCE requires a crossover cable, a straight-through cable will work if either or both of the devices implements the Medium Dependent Interface MDI standard.
The tools needed to transform a network cable and two RJ connectors into a straight-through cable are:. Public Domain.
Network cable colors from PXHere. I find this very useful as somethings I knew earlier but the blog is just amazing for beginners as some things are here too for Engineers. I really appreciate it. Lets say im running a cat6 cable from a switch to a computer. This site uses Akismet to reduce spam.
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