RJ45 Colors

[grant_cpt]

Good day

Is there any 'easy' way to help remember the color codes for crossover and straight througth?

Regards
Grant

 

[Beastman007]

Good day

Is there any 'easy' way to help remember the color codes for crossover and straight througth?

Regards
Grant

Yes there is, do 21 or more crimps in one sitting and you will never forget them again

 

[SinghDude]

No.

Practice makes perfect.

 

[Nuro]

I haven't crimped a crossover in years. Most NICs will go into an automatic crossover mode - https://en.wikipedia.org/wiki/Ethernet_crossover_cable#Automatic_crossover

 

[killerbyte]

Well to the best of my knowledge the current generation of gigabit network ports can use a straight cable and treat it as a crossover (I could be wrong since I haven't even needed to use a crossover for over a decade).

And the colours for the cable depend on which specification, the most common in SA seems to be the B specification.

White Orange
Orange
White Green
Blue
White Blue
Green
White Brown
Brown

 

[killerbyte]

Yes there is, do 21 or more crimps in one sitting and you will never forget them again

I did 35 in one sitting and the client ended up using wireless the whole time... my hand was bruised after all those crimps.

 

[Beachless]

+1 no need to be a crossover anymore you can be straight now.

 

[TJ99]

Well to the best of my knowledge the current generation of gigabit network ports can use a straight cable and treat it as a crossover (I could be wrong since I haven't even needed to use a crossover for over a decade).

This has also been the case for more than a decade.

 

[koeksGHT]

Crimp enough cables and you will remember..

 

[Rickster]

BLOG

 

[Agent_Smith]

Well to the best of my knowledge the current generation of gigabit network ports can use a straight cable and treat it as a crossover (I could be wrong since I haven't even needed to use a crossover for over a decade).

And the colours for the cable depend on which specification, the most common in SA seems to be the B specification.

White Orange
Orange
White Green
Blue
White Blue
Green
White Brown
Brown

Yup. Think auto switching is now standard on most (if not all) switches. So weird reading your layout like that. I've used the same layout for 16 years but I always put the colour before the white (so Orange + White; Orange etc...). When reading yours, it confuses the crap out of me!

 

[akshaybzn]

Well technically not. However as long as the wires on the one side of the RJ45 match the other than the colour order doesn't matter

 

[FNfal]

Well technically not. However as long as the wires on the one side of the RJ45 match the other than the colour order doesn't matter

Correct .
Colours are never what they supposed to be any way .

 

[koeksGHT]

Well technically not. However as long as the wires on the one side of the RJ45 match the other than the colour order doesn't matter

Yes but we do have standards for structured cabling to make everyone's life easier.

 

[Progenix Oj101]

It does matter at times, especially on long, high speed (Gbit or faster) connections where crosstalk and interference can be an issue. The pairs are twisted at different rates to minimise these affects.

 

[TheMightyQuin]

Well technically not. However as long as the wires on the one side of the RJ45 match the other than the colour order doesn't matter

Good luck with that in a corporate and or legacy environment.

 

[Stratt]

Well technically not. However as long as the wires on the one side of the RJ45 match the other than the colour order doesn't matter

Not true. The way the cables are crimped, be it B or A spec, is done so for a reason. This reduces EMF. Read up on TIA/EIA-568-B.1-2001 (T568A) and TIA/EIA-568-B.1-2001 (T568B).

 

[gregmcc]

Well technically not. However as long as the wires on the one side of the RJ45 match the other than the colour order doesn't matter

Bet you have loads of network errors.