Limit to the length of CAT5 cable? please help

[robotcholi]

Is there a limit to how long CAT5 cable can be? This is my problem:
I crimped(spelling?) about 8 CAT5 cables today and they are around 70-80 feet long. For some reason all of them won't work. I then crimped 2 short ones just to test it out maybe I crimped the other 8 wrong but the 2 short ones worked fine (i am very confident that the ends are good and no loose connections). I've checked all my wiring and they all matched perfectly. I am so clueless right now and sad Can someone please be so kind and enlighten me. I am desperate. Is there anything that can stop the flow of electron maybe? Please help. Thank you so much in advance.

robot,

 

[spidey07]

most of the time one cannot crimp a good cat 5 connection without a lot of practice and patience.

Check your pinouts on the connectors and look up 568b wiring. Otherwise don't crimp and use jacks.

The distance limitations are 90 meters for wiring and 5 meters a piece for two patch cables for a total of 100 meters end-to-end. So you're within distance but probably have the crimping or wire order messed up.

 

[robotcholi]

Originally posted by: spidey07
most of the time one cannot crimp a good cat 5 connection without a lot of practice and patience.

Check your pinouts on the connectors and look up 568b wiring. Otherwise don't crimp and use jacks.

The distance limitations are 90 meters for wiring and 5 meters a piece for two patch cables for a total of 100 meters end-to-end. So you're within distance but probably have the crimping or wire order messed up.

yeah, other folks seem to think i have the wiring order messed up. Thanks for your help spidey07.

 

[Mucman]

Originally posted by: spidey07
most of the time one cannot crimp a good cat 5 connection without a lot of practice and patience.

Check your pinouts on the connectors and look up 568b wiring. Otherwise don't crimp and use jacks.

The distance limitations are 90 meters for wiring and 5 meters a piece for two patch cables for a total of 100 meters end-to-end. So you're within distance but probably have the crimping or wire order messed up.

Hehe, I got flamed in Off Topic for giving the same advice! I guess people just know more in OT

 

[spidey07]

What do you mean mucman? Its just a network right? All I have to do is slap some wires together and plug it in, right?

-edit- post link so the 300 pound gorilla spidey can come out and play.

 

[Mucman]

Originally posted by: spidey07
What do you mean mucman? Its just a network right? All I have to do is slap some wires together and plug it in, right?

-edit- post link so the 300 pound gorilla spidey can come out and play.

lol... exactly! People always find it odd that we have a whole forum dedicated for a bunch of monkey who slap wires together

enjoy

 

[spidey07]

And I can name 5 people on this board that have a combined 70 years experience.

 

[skyking]

I crimp my own solid jumpers for static situations, like patch panels, etc. Never to hook up a workstation, or any other remotely moveable situation.
I would never attempt to crimp stranded, and I make those solid jumpers knowing full well my limitations and possibilities of failure, thanks to you guys here. I test them, and so far, so good

 

[robotcholi]

guys, thanks for all the helps. all is well with me now
the fault was in wiring configuration
i tried 1-2, 3-4, 5-6, 7-8 for short ones and they worked but it didn't stranslate so well to longer ones.
so i tried the method d33p suggested to me [1-2, 3-6, 4-5, 7-8] and it worked wonderful.
All is well now
Thanks for all the helps guys. Appreciated

Robot,

 

[ScottMac]

That is still incorrect.

To be correct (and to ensure proper high-speed operation) the pair-order is critical:

(568B) Orange-white, orange, green-white, blue, blue-white, green, brown-white, brown
(clip down, opening towards your body)

The only other acceptable pair-order is to swap the orange and green pairs (568A).

Any other color order is only suitable for telephone use (maybe serial / console).

Edit: (I read the other link too). The link light is DC ... no frequency there at all. It is not at all unusual to get a link light and still not pass traffic, especially at speed and longer lengths. The improper cabling kills the signal ... the longer the cable, the more the signal gets clobbered. Passing DC and passing a frequency are two totally different animals.

FWIW

Scott