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ethernet cable help

R

russellallen

Junior Member
hi all,

i have a PS2 at one end of my house, and my hub is about 70 feet away. i cut a cat 5 cable and ran it to the other end of my house to the ps2. it ended up being 80-90 feet total cable length. i added the end connectors, and tested it with my computer. it didn't work.

i then cut a 12 foot cable to test, and it worked. i have replaced both end caps perfectly twice now, and the cable still won't work. is it possible that the cable is too long? or is the cable messed up?

i bought this cable at Lowe's for 17 cents/foot, so i hope it's not too cheap to work.

thanks
russell
 
It should work, but you may not be doing a great job on crimping the jacks. Personally I prefer to run cables to keystone jacks, and then use pre made cables from the keystone jack to the pc. It's really hard to screw up a keystone jack, so try that.
 
There's always a remote possibility of a break somewhere in the cable. It's good to have a cheap set of cable testers to check that all wires connect to the other side.

I'd suggest re-ordering the wire pairs, so you use the green & brown pair for the ethernet instead of the orange & blue. If there's say a break in one of the blue wires, you can get around it by using the green wires instead.

I assume you're ordering the wire pairs properly?
 
I would suggest going to Fry's or something like that and get a cheap cable tester. I got one for about 30 bucks and it test Cat 5, RJ-11, and Coax. With the tester it removes all doubt if you crimped it correct or now.

You wired it for a straight ethernet cable not a crossover right?
 
i was under the impression that if you come up with any order, and replicate it on the other end, it would work? is this not correct? if not, what is the correct order?

so none of you think the cable is just too long?
 
No, that run should not be too long. I have one running probably that long from my Netgear 24 port 10/100 switch to my room computer.

Yes, it doesn't matter what order the wire pairs are in as LONG AS they are the same on the opposite end for a straight-through cable.

You are not trying to connect your computer to your PS2 instead of to a router/switch are you?
 
Originally posted by: Reapsy01
ethernet is good for 100m before needing a reapter/hub/switch or whatever. It's probably your homemade cable.
Click to expand...

100M is using the approved wiring standard, but the op just put them in whatever way he wanted to.

op - look up on the internet for ethernet cable 568A or 568B standard and follow it, there is actually a reason to put the wires in a certain order.
 
Try ordering them the right way. Also, if your connecting straight from PC to PS/2 (no switch or anything) then you may need it to be a cross-over cable.

Also, some MoBo's (like mine) have cable testers inbuilt, that you can access from bois.

RoD
 
I had a similar problem at my neighbors house. I ran a temporary short Cat5 cable between the router and a computer. It worked fine. Then I decided to make it permanent and had a long cable, 30', made up to install it neater. It worked for awhile and then quit.

I tried everything to no avail. I hooked up the short cable again and it worked fine. Had the longer cable checked with a tester and it was fine. Went to a different long cable and it would not work.

Has anyone figured out the punchline yet? The NIC in that computer would not pull the signal through the longer cable.
Try another NIC.

Good Luck
Smittty
 
Originally posted by: Smitty308
I had a similar problem at my neighbors house. I ran a temporary short Cat5 cable between the router and a computer. It worked fine. Then I decided to make it permanent and had a long cable, 30', made up to install it neater. It worked for awhile and then quit.

I tried everything to no avail. I hooked up the short cable again and it worked fine. Had the longer cable checked with a tester and it was fine. Went to a different long cable and it would not work.

Has anyone figured out the punchline yet? The NIC in that computer would not pull the signal through the longer cable.
Try another NIC.

Good Luck
Smittty
Click to expand...

did you use either the 568A or 568B wiring standard?
 
Originally posted by: Smitty308
I am not sure about the wiring standard, Someone that has done a lot of networking made up the cables for me.
Click to expand...

do you still have the cable? just curios because i have made long cables - 150'+ with no problems...
 
Originally posted by: russellallen
i was under the impression that if you come up with any order, and replicate it on the other end, it would work? is this not correct? if not, what is the correct order?

so none of you think the cable is just too long?
Click to expand...

Kind of. You can put them in any order (consistant on both ends) and it will work at 10mbit speeds, or 100mbit at very short distances. To get the higher transfer speeds, the pairing is very important.

simple google search result
 
CAT5 attenuation distance is 100 meters I believe. So I don't think length is the problem. If you are absolutely sure you cap them perfectly (because I know I don't every time), then it feels like a kink in the line somewhere, possibly severing it somewhere or causing major crosstalk.

I buy my cable from Home Depot for like 6 cents a foot and mine works fine, so I wouldn't worry about the cheapness.
 
I've got about 60ish feet of cable here which is fine. I did use one of the wiring standards although I've forgotten which one now.
 
Should use something like:

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

Just letting you know... When you put the RJ45 ends on the white/orange wire (pin 1) should be the left most wire when looking from the underside of the RJ45 end (retaining clip is on top side)... Hope that helps...
 
ok, i will try to put new ends on using this order. i don't know what the wireing standards are though.
"Kind of. You can put them in any order (consistant on both ends) and it will work at 10mbit speeds, or 100mbit at very short distances. To get the higher transfer speeds, the pairing is very important. "

see i didn't know this. is the pairing mickey described the correct way to make sure i'm getting the 100mb speeds?

 
Originally posted by: russellallen
ok, i will try to put new ends on using this order. i don't know what the wireing standards are though.
"Kind of. You can put them in any order (consistant on both ends) and it will work at 10mbit speeds, or 100mbit at very short distances. To get the higher transfer speeds, the pairing is very important. "

see i didn't know this. is the pairing mickey described the correct way to make sure i'm getting the 100mb speeds?
Click to expand...

use 568A or 568B, the reson for the wiring order is, i believe, is due to how the signal cancel each other out or outisde noise. maybe somebody can clairify this for me
 
The reason for the standardized wiring scheme mentioned earlier is to reduce interference called "cross-talk". It basically helps prevent signal from bleeding over from one wire to another. This gets especially important at longer lengths.
 
Originally posted by: russellallen
ok, i will try to put new ends on using this order. i don't know what the wireing standards are though.
"Kind of. You can put them in any order (consistant on both ends) and it will work at 10mbit speeds, or 100mbit at very short distances. To get the higher transfer speeds, the pairing is very important. "

see i didn't know this. is the pairing mickey described the correct way to make sure i'm getting the 100mb speeds?
Click to expand...

Yes, this pairing I put forth is the one of the correct ways to make sure you get the full speed (also known as 568B wiring - but as mentioned above as well 568A is also acceptable but in the industry is much less common wiring method). It also ensures furthest signal transfer. BTW, 568A is just the white/green with green pair swapped with the white/orange with orange pair. Nothing more.

And to explain why, you only need to break apart a typical CAT5e cable for instance. In doing so you will notice that the wires inside the jacket are paired with each other. Not only that but if you pay special attention you will notice that down the length of the cable, the actual twists in the cable vary. The white/orange with orange and the white/green with green pairs have much more twists "per foot" of cable then the other two pairs (white/bue with blue and white/brown with brown). This twisting of cables makes it possible to transfer faster and farther than without.

As mentioned above, "cross-talk" is this interference from not only the signal being carried but possibly other cables nearby and fields around the cable in usage. Not only do the pairs twist but the color combinations also twist with each other helping increase the effect. Most quality cables will specify the actual twists per foot of cable to let you know the build of the cable. Also, you will see ratings on the cables at times indicating the "MHZ" rating. That is the rating of the cable transmission capabilities and to give you an example, 100MHZ rating falls in the CAT5 category. 350MHZ rated cable falls in the CAT5e and some CAT6 category. CAT5e is the minimum rated cable you can correctly use for Gigabit transfers for instance. Not that CAT5 CANT work, but not designed to do it as reliably.

Last but not least, if you are making cables that are in use and not stationary, then try to use "stranded" cabling for increased life expectancy. Hope that helps.
 
I tried 2 different 30 foot cables and neither would work on this particular NIC, but the short one worked, and still is, working fine.

I am assuming that if the NIC won't pull the signal through the longer cables, that even though it does work with shorter cables, it does have some speed loss and may be a defective NIC. So, I suggested trying another one with the long cable.

I was not saying that long cables won't work, as I know a lot of networked computers are very far apart.

Smitty
 
thank you so much everyone!! especially michey. i wanted to stop and tell you guys that the wireing works perfectly. i am so thankful i wanted to come and tell you guys before i even start an online game 🙂

russell
 
Originally posted by: russellallen
thank you so much everyone!! especially michey. i wanted to stop and tell you guys that the wireing works perfectly. i am so thankful i wanted to come and tell you guys before i even start an online game 🙂

russell
Click to expand...

:thumbsup::beer:

glad it worked out
 
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