When is rollover cable used in a network

It is also referred to as a Cisco console cable and is normally flat and light blue so as to distinguish it from other network cable types. The pin-outs on one end of the cable are reversed from the opposite end, which is how the cable derived its name. A rollover cable is identified by comparing each end of the cable while they are beside each other. The wire that connects the pin on the outside of the plug on the left-hand side is the same color as the wire connecting the pin on the outside of the plug on the right-hand side.

Pin 2 of connector A would be connected to Pin 7 of connector B and so on. Rollover cables, sometimes referred to as Yost cables are most commonly used to connect to a devices console port to make programming changes to the device. Unlike crossover and straight-wired cables, rollover cables are not intended to carry data but instead create an interface with the device. It is very impor tant to know about Types of cables Used in Networking for network engineer.

Let us learn some of the basic information about the time-division multiplexing and different types of multiplexing in it.

The time-division multiplexing can be of two types. It can be statistical time division multiplexing and frequency division multiplexing. Before we Every channel has a specific Have an account? Sign In Now. Sign In. Remember Me! Don't have account, Sign Up Here. Forgot Password. The proper configuration of the wires on each end, called the pinout, characterizes a rollover cable. Appropriate markings on the ends of the cable indicate what kind it is, unless different colors of cabling are available to be used.

Custom-made cables, not ordered from the manufacturer, should be marked accordingly so they are not confused with other cables that look the same. Andrew Kirmayer. Please enter the following code:. When you connect two devices of different types together, you use a straight through cable.

When you connect two devices of the same type together, you use a crossover cable. All cables are straight through if you insert a network device between two devices of the same kind. 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.