hpman820129
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Giga Ethernet crossover cable
If I use Fast Ethernet, two pair of wires are used. They will be swapped for crossover.
If I use Giga Ethernet, four pair of wire are used, so that the crossover cable should be difference, isn't it?
What is the pin out of Giga Ethernet crossover cable?
HPMAN
If I use Giga Ethernet, four pair of wire are used, so that the crossover cable should be difference, isn't it?
What is the pin out of Giga Ethernet crossover cable?
HPMAN
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with the second link/post, since they used the word "white" in every listing... if "white" is first or before the slash, then its majority white, with a strip or dot of color...if "white" is listed after the slash, then whatever color is before the slash is the color of the wire completely solid.
i.e.
white/orange = white with a strip or dot of orange
orange/white = completely orange
i.e.
white/orange = white with a strip or dot of orange
orange/white = completely orange
I've always used single color for solid and followed the single color with white for striped or whatever white was paired with the solid - some cables don't have striped wires, just solid color paired with white, in which case you need to keep track of which white was paired with which color in the twists.
i.e.
blue/white = the white or blue-and-white striped wire paired with the solid color blue wire.
blue = the solid colored blue wire.
I don't ever recall seeing it in either of the above notations.
That's just nitpicking, though. The crossover is:
Pin 1 - pin 3
Pin 2 - Pin 6
Pin 3 - pin 1
Pin 4 - pin 7
Pin 5 - pin 8
Pin 6 - pin 2
Pin 7 - pin 4
Pin 8 - pin 5
The color pairs and number of twists makes a big difference, too, in meeting the spec for gigabit crossover. Using the old standard Cat5 crossover won't do it, 'cause it doesn't cross over anything except pins 1,2,3 & 6. One end should maintain the Cat5 standard color order, the other should match the corresponding pinouts.
i.e.
blue/white = the white or blue-and-white striped wire paired with the solid color blue wire.
blue = the solid colored blue wire.
I don't ever recall seeing it in either of the above notations.
That's just nitpicking, though. The crossover is:
Pin 1 - pin 3
Pin 2 - Pin 6
Pin 3 - pin 1
Pin 4 - pin 7
Pin 5 - pin 8
Pin 6 - pin 2
Pin 7 - pin 4
Pin 8 - pin 5
The color pairs and number of twists makes a big difference, too, in meeting the spec for gigabit crossover. Using the old standard Cat5 crossover won't do it, 'cause it doesn't cross over anything except pins 1,2,3 & 6. One end should maintain the Cat5 standard color order, the other should match the corresponding pinouts.
Usually when you see blue/white and white/blue, etc., you're talking telco bundles, where they have wires with radial stripes of color - the blue/white would be more blue than white and the white/blue would be more white than blue.
http://logout.sh/computers/net/gigabit/
Pin Connector #1 Connector #2
1 white/orange white/green
2 orange/white green/white
3 white/green white/orange
4 blue/white white/brown
5 white/blue brown/white
6 green/white orange/white
7 white/brown blue/white
8 brown/white white/blue