Vista UTP Cable Question

[KA Kueh]

Dear all,

I have a few questions regarding UTP cables when used in a Vista
environment.

1) Does it make any differences if I have a TIA/EIA 568B cable scheme vs
just colored paired wire (white orange, orange, white blue blue, white
green,green, white brown, brown)?

2) Is there any performance differences if non standard wire scheme are
used? If so, why? since connection wise it gives me a straight cable
configuration.

Thanks.

Regards,
Kueh.

 

[Richard G. Harper]

Vista makes no difference on how the cable operates. Not using the standard
pairings and pinouts will increase noise in the cable, decrease performance,
cause problems, etc. no matter what OS you use. There's a reason the
standard specifies the colors to be paired and used and what pins they
connect to.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

 

[KA Kueh]

Hi,

Thanks for the reply. I am observing some strange problems that is
cropping up in my office setup. Our previous support guy was doing the UTP
cable the non standard way ie just paring colored cables togather. While it
works well with Windows XP machine but the same cable would cause Vista
network copy to be slow to a crawl. I am getting like 100-200KiloBytes per
sec with the non standard cable, on XP I am getting 4-5MegaBytes per sec.

Well, I did a test. Cutting both ends of the UTP cable and rewire with new
RJ45 jack to standard EIA 568B scheme, the same cable now works in the
4-5MB/s. Hope this might help some of the folks out there that is getting
slow network copy speed.

Thanks.

Regards,
Kueh.

Vista makes no difference on how the cable operates. Not using the
standard pairings and pinouts will increase noise in the cable, decrease
performance, cause problems, etc. no matter what OS you use. There's a
reason the standard specifies the colors to be paired and used and what
pins they connect to.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Dear all,

I have a few questions regarding UTP cables when used in a Vista
environment.

1) Does it make any differences if I have a TIA/EIA 568B cable scheme vs
just colored paired wire (white orange, orange, white blue blue, white
green,green, white brown, brown)?

2) Is there any performance differences if non standard wire scheme are
used? If so, why? since connection wise it gives me a straight cable
configuration.

Thanks.

Regards,
Kueh.

 

[Mike O]

UTP network connections are based on wiring pairs, each signal must be
matched with it's correct "partner". Because the wiring schemes originally
came from the telephone industry, the pairing at the jack is similar to
phone wires. The two middle pins (4 & 5 on an 8 pin plug) are one pair, the
next two outer (3 & 6) are another pair. After the first two, the next
pairs are next to each other (1&2 and 7&8). None of the wiring cares what
color you use, but you must keep the pairs together or you will suffer bad
performance. Using the straight left to right, solid/stripe/solid/stripe,
etc. makes what's called "split" pairs from the two middle sets.

As someone else said, the O/S isn't going to make a difference, however
possibly the XP driver was more tolerant of bad connection and somewhat
masked the poor performance.

Mike O.

Hi,

Thanks for the reply. I am observing some strange problems that is
cropping up in my office setup. Our previous support guy was doing the
UTP cable the non standard way ie just paring colored cables togather.
While it works well with Windows XP machine but the same cable would cause
Vista network copy to be slow to a crawl. I am getting like
100-200KiloBytes per sec with the non standard cable, on XP I am getting
4-5MegaBytes per sec.

Well, I did a test. Cutting both ends of the UTP cable and rewire with
new RJ45 jack to standard EIA 568B scheme, the same cable now works in the
4-5MB/s. Hope this might help some of the folks out there that is
getting slow network copy speed.

Thanks.

Regards,
Kueh.

Vista makes no difference on how the cable operates. Not using the
standard pairings and pinouts will increase noise in the cable, decrease
performance, cause problems, etc. no matter what OS you use. There's a
reason the standard specifies the colors to be paired and used and what
pins they connect to.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

Dear all,

I have a few questions regarding UTP cables when used in a Vista
environment.

1) Does it make any differences if I have a TIA/EIA 568B cable scheme vs
just colored paired wire (white orange, orange, white blue blue, white
green,green, white brown, brown)?

2) Is there any performance differences if non standard wire scheme are
used? If so, why? since connection wise it gives me a straight cable
configuration.

Thanks.

Regards,
Kueh.

 

[Not Me]

Most of the connectors I have bought have had the colors coded right on the
plugs to match the wires.
Why anyone would not just follow that is beyond me.
But non standard wiring can cause a bad connection and slow transfer rates
because it can change the resistance in the cable.
Even a fraction of an inch difference in spacing of the wires can make a
difference.
Each wire puts out a small electromagnetic wave that is picked up by the
other wires.
The standard wiring design takes into account the placement and even the
twist of the wire to optimize the cable.
Wiring it willy-nilly is like using the first resistor you see (instead of
the one specified) when building a circuit, then wondering why the thing
doesn't perform as designed.

 

[Kueh Kim Ann]

Hi Mike,

Thanks for the explaination. I guess those people out there who is having
network performance problem should also look at their UTP cable to see if it
is standard compliance. I have learned the hard way.

Regards,
Kueh.

UTP network connections are based on wiring pairs, each signal must be
matched with it's correct "partner". Because the wiring schemes
originally came from the telephone industry, the pairing at the jack is
similar to phone wires. The two middle pins (4 & 5 on an 8 pin plug) are
one pair, the next two outer (3 & 6) are another pair. After the first
two, the next pairs are next to each other (1&2 and 7&8). None of the
wiring cares what color you use, but you must keep the pairs together or
you will suffer bad performance. Using the straight left to right,
solid/stripe/solid/stripe, etc. makes what's called "split" pairs from the
two middle sets.

As someone else said, the O/S isn't going to make a difference, however
possibly the XP driver was more tolerant of bad connection and somewhat
masked the poor performance.

Mike O.

Hi,

Thanks for the reply. I am observing some strange problems that is
cropping up in my office setup. Our previous support guy was doing the
UTP cable the non standard way ie just paring colored cables togather.
While it works well with Windows XP machine but the same cable would
cause Vista network copy to be slow to a crawl. I am getting like
100-200KiloBytes per sec with the non standard cable, on XP I am getting
4-5MegaBytes per sec.

Well, I did a test. Cutting both ends of the UTP cable and rewire with
new RJ45 jack to standard EIA 568B scheme, the same cable now works in
the 4-5MB/s. Hope this might help some of the folks out there that is
getting slow network copy speed.

Thanks.

Regards,
Kueh.

Vista makes no difference on how the cable operates. Not using the
standard pairings and pinouts will increase noise in the cable, decrease
performance, cause problems, etc. no matter what OS you use. There's a
reason the standard specifies the colors to be paired and used and what
pins they connect to.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* NEW! Catch my blog ... http://msmvps.com/blogs/rgharper/
* PLEASE post all messages and replies in the newsgroups
* The Website - http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm


Dear all,

I have a few questions regarding UTP cables when used in a Vista
environment.

1) Does it make any differences if I have a TIA/EIA 568B cable scheme
vs just colored paired wire (white orange, orange, white blue blue,
white green,green, white brown, brown)?

2) Is there any performance differences if non standard wire scheme are
used? If so, why? since connection wise it gives me a straight cable
configuration.

Thanks.

Regards,
Kueh.