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NetworkingATE
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 What is a straight-through, cross-over and a roll-over cable?
Cabling, Cross-over cable, Networking, roll-over cable, straight-through cable
What is a straight-through cable, a cross-over cable and a roll-over cable?

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ASKED: January 29, 2008  10:04 PM
UPDATED: March 23, 2011  11:29 PM
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A patch cable (also called a straight through cable) is configured with all 8 wires in the same order on both ends of the cable. There are two standard wiring configurations used for patch cables. They are 568A and 568B. Either configuration can be used, so long as the same configuration is used at both ends of the cable. With 568A: Pin 1 - White/Orange Pin 2 - Orange White Pin 3 - White/Green Pin 4 - Blue/White Pin 5 - White/Blue Pin 6 - Green/White Pin 7 - White/Brown Pin 8 - Brown/White With 568B: Pin 1 - White/Green Pin 2 - Green/White Pin 3 - White/Orange Pin 4 - Blue/White Pin 5 - White/Blue Pin 6 - Orange/White Pin 7 - White/Brown Pin 8 - Brown/White A cross over cable is configured with 4 of the wires in the same order on each end. The other four wires are crossed (hence the name). One end gets wired with the 568A configuration, while the other gets wired with the 568B configuration. First End: Pin 1 - White/Orange Pin 2 - Orange White Pin 3 - White/Green Pin 4 - Blue/White Pin 5 - White/Blue Pin 6 - Green/White Pin 7 - White/Brown Pin 8 - Brown/White Second End: Pin 1 - White/Green Pin 2 - Green/White Pin 3 - White/Orange Pin 4 - Blue/White Pin 5 - White/Blue Pin 6 - Orange/White Pin 7 - White/Brown Pin 8 - Brown/White A rollover cable is wired with each pin on one end of the cable connected to the reverse pin on the other end. So the cable on Pin 1 on one end of the cable connects to Pin 8 at the other end, etc. Rollover cables are used to connect the serial port of a computer to the serial port of a network switch so that you can configure the network switch. These cables are not used for network connectivity.
Last Wiki Answer Submitted:  December 15, 2009  6:12 pm  by  Denny Cherry   64,520 pts.
All Answer Wiki Contributors:  Denny Cherry   64,520 pts.
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I couldn’t say it any better my self.

A straight is used for connecting 2 unlink devices such as; hub-computer, switch-computer.

A Cross-over is used for connecting 2 like devices such as; computer-computer, computer-router (non config).

A roll-over is used for connecting for configuration; config serial ports on routers, wap’s, and etc.

IT-Guy1509
 210 pts.