What then happens if we have two switches in the mix? They each "cross" the wire once, therefore two PC's connected through to switches would have the switch's crossing effect negated. Anytime something is sent on a TX pair, it is always received by an RX pair, all the way through the communication. This fact is applied only to the devices that don't have an auto sensing mechanism , which can detect the direction of the transmitted traffic on each pin of the 8 RJ pins. When connecting same type of network devices together switch to switch, router to router or PC to PC , we need to use cross-over cables so that the emitting pair from one device goes to the receiving pair of the other device.
Nowadays, most devices are smart enough to understand the direction of the traffic and handle it whatever the type of cable. According to your answer, I think first you should have a basic understanding of the Crossover cable. A Crossover cables, as the name implies, are the cables with the Tx and Rx lines crossed. While the other type of the ethernet cable is straight-through cable that has the pin assignments on each end of the cable.
That's why you need a crossover cable. A crossover cable redirect the output of one RJ port into the input of the other RJ port. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?
Learn more. Why do I need a crossover cable to connect devices of the same type? Ask Question. Asked 5 years, 2 months ago. Do I still need a crossover cable to connect two PC's directly? If not, then why was this needed in the past, and when was it used for this?
Specifically, when did crossover cables stop being needed to directly connect 2 PCs? Most all? The answer is simple: You don't need such cable. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Despite advances in wireless technologies, many computer networks still rely on cables as a physical medium for devices to transfer data.
Several standard types of network cable exist, including coaxial cable, twisted pair cable, USB cable, crossover cable, Ethernet patch cable , fiber optic cable, etc. Among these different types of network cable, many people may be unfamiliar with the patch cable and crossover cable.
In fact, patch cable and crossover cable are two types of Ethernet cable, and they have the same physical characteristics. But what on earth is the difference between the patch cable and crossover cable?
With regard to these two patch cable wiring schemes, there are two different connectivity forms. The TB wiring scheme is by far the most common, though many devices support the TA wiring scheme as well.
If both ends of the patch cords are wired on the basis of one standard, it is a straight through connection. Both the standards can be used for straight through cable. If not, it is a crossover connection. Some networking applications require an Ethernet crossover cable, which has a TA connector on one end and a TB connector on the other.
Hm, that's an unfortunate choice. In premade cables, crossovers are usually orange! Geese: An RJ45 barrel connector in no way "terminates" the cable. Sure, the extra contacts and so on don't look exactly like the rest of the cable looks. But you're talking about differences on the order of a percent or so when the line receivers are tolerant of 50 percent differences, at least.
Why do straight through and crossover ethernet cables exist? Ok that makes sense, thanks This is why I love ars. Ars Tribunus Militum et Subscriptor.
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