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Is this bad cabling?

M

Mucman

Diamond Member
We got some patch panels that are 568A. Most, if not all of our patch cables are 568B. Would it be bad cabling technique to have it setup like this :

switch -> 568B patch cable -> patchpanel -> punch down 568A ----- wire ----- punchdown 568A -> patchpanel -> 568B patch cable -> server
 
There's nothing wrong with doing it that way. 568A and 568B cables are electrically identical. They just have the orange and green pairs swapped. The place you run into trouble is connecting 568A patch panels to 568B panels (or jacks) and following the color codes. This will result in a crossover. Your setup is fine.
 
its not bad cabling at all, just bad practice. By sticking to one wiring standard throughout you'll never have to worry about getting A and B jacks/panels/cables mixed up.
 
Yeah that's what I thought... Too bad I have already made 30 patch cables that are 568b before I found out that patch panels were 568a 🙁
 
It makes no difference whatsoever. As I said the cables are electrically identical. Just don't mix A and B jacks or patch panels and you'll be fine. If it mattered, PCs and hubs etc. would be labelled A or B!
 
If you want to keep making life hard on yourself by mixing and matching cables/jacks/standards then yes it will work just fine and meet cat5 specs.

But once you step into the world of structured cabling and realize how much money you can save by not fighting or guessing on cabling then you WILL ADHERE TO THE STANDARDS.

read the freakin TIA standards before telling somebody "don't worry about it".

<edit> heheheehe, putting on cable nazi hat 🙂

<more edit> how much crosstalk and attentuation is added to a end-to-end cable run by mixing and matching pairs? If you knew you wouldn't mix'em.
 
Calm down Spidey! You're almost as bad as ScottMac! 😉

This was sort of my fault in the first place because I started making 568b cables before checking out everything else. I had always heard that 568b is the popular way to do it in North America for some reason. I had used 568b for my house as well... it just became a habit.
 
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