Well, that depends on the font used - if you remove the serifs from the
ones, they travel so fast that you can actually get a zero latency
issue, because the rounder zeros can't keep up. I found that if I bold
the ones and use a serif font (or just use lower case "L"), the speed
balances out better between ones and zeros. That's why a kinked cable
is bad, because if it breaks there, the bits start leaking onto the
floor...what a mess that is.

Rick

-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Dave Saville
Sent: Thursday, February 23, 2006 6:19 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

On Thu, 23 Feb 2006 08:47:51 -0500, Dan Caissie wrote:

>If you ever seen a wiring closet it would scare you most times in most
>places.
>
>Do you know if you twist the network wires the data gets corrupted ;)

Only if there are an odd number of twists. The real problem is that the
ones slide round the bends faster than the zeros - 'cos ones are thinner
and therefore have less resistance getting through the constriction.

--
Regards

Dave Saville



UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org

That's what we get for trying to talk about a networking topic on a software
system list. LOL.

Fluxman

-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of CJT.
Sent: 02/23/2006 9:54 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Some info off the web re: CAT 5 cable,


URL http://www.danpex.com/faqs/cat5-inst.htm

Extract (DANPEX Corp.):

Anything that kinks the cable or disturbs the precise alignment of the wire
pairs inside the cable has the potential to create future performance
problems.


URL
http://www.elec-toolbox.com/communications/classifications/cat5/install.htm

Extract (Electricians Toolbox):

Cat 5 cable requires careful and precise installation to maximize efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the wire pairs inside the cable has the potential to
create future performance problems.


URL http://www.delmar.edu/Courses/ITNW1325/sem1/notes/lessons36-39.html

Extract (mpharris@surf.delmar.edu):

Never secure the cable ties too tightly and try to minimize the amount of
jacket twisting. Never allow the cable to be pinched or kinked. If this
occurs, data will move more slowly and your local area network will operate
at less than optimal capacity. If you exceed 25 pounds of pull, wires inside
the cable can untwist. If wire pairs become untwisted, this can lead to
interference and crosstalk.).


URL
http://72.14.207.104/search?q=cache:xnQfC3To9MEJ:www.sonicmario.com/cisco/Se
mester%25201/S1Ch09review.htm+CISCO+kinked+rj45+cable&hl=en&gl=au&ct=clnk&cd
=10

Extract:

Never allow cables to be pinched or kinked. If this occurs, data throughput
will be reduced, and the LAN will operate at less than optimal capacity.


URL
http://www.commsdesign.com/designcorner/showArticle.jhtml?articleID=1650546
5

Extract (Jason Knickerbocker, Marvell):

Cat5 cable requires careful and precise installation to maximize efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the pairs inside the cable has the potential to create
future performance problems.


URL http://www.derose.net/steve/guides/wiring

Extract (Steve DeRose,):

Never bend CAT5 or higher wire tightly around a corner; make sure it bends
gradually, so that a whole circle would be at least 2" across.






-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Dave Saville
Sent: Thursday, 23 February 2006 9:52 PM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

On Wed, 22 Feb 2006 20:56:46 -0800, Rick Cook wrote:

>If the wires were bent to the point where they were marginally broken,
>it
might cause intermittent failures, but I can't see it just causing slowness.
Network cables aren't like garden hoses that can have flow controlled. I
say that electrons either travel, or they don't.

I agree with Rick *if* the cable is cat5. But if it were good old "fat"
ethernet which is co-ax then yes, sharp bends are known to degrade signal
and introduce interference on this type of cable.

--
Regards

Dave Saville



UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org



UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org

**

Jim:

That is for cable service, not for sending data via the older Ethernet system. They use completely different methods.

James McKenzie

-----Original Message-----
From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG]On Behalf Of Jim Fox
Sent: Thursday, February 23, 2006 7:13 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires


**
Yes, Cox Cable.

Fluxman




From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of McKenzie, James J C-E LCMC HQISEC/L3

Sent: 02/23/2006 8:38 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires


**
Dave:
You know of anyone using the old 10Base5 (it is a 1/4" thick coax cable) anymore?
James McKenzie
-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG]On Behalf Of Dave Saville
Sent: Thursday, February 23, 2006 3:52 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires


On Wed, 22 Feb 2006 20:56:46 -0800, Rick Cook wrote:
>If the wires were bent to the point where they were marginally broken, it might cause intermittent failures, but I can't see it just causing slowness. Network cables aren't like garden hoses that can have flow controlled. I say that electrons either travel, or they don't.

I agree with Rick *if* the cable is cat5. But if it were good old "fat"
ethernet which is co-ax then yes, sharp bends are known to degrade signal and
introduce interference on this type of cable.
--
Regards
Dave Saville

UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org
20060125This posting was submitted with HTML in it 20060125This posting was submitted with HTML in it

20060125This posting was submitted with HTML in it

**

Dibert alert!

James McKenzie


-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG]On Behalf Of Dave Saville
Sent: Thursday, February 23, 2006 7:19 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires


On Thu, 23 Feb 2006 08:47:51 -0500, Dan Caissie wrote:

>If you ever seen a wiring closet it would scare you most times in most
>places.
>
>Do you know if you twist the network wires the data gets corrupted ;)

Only if there are an odd number of twists. The real problem is that the ones
slide round the bends faster than the zeros - 'cos ones are thinner and
therefore have less resistance getting through the constriction.

--
Regards

Dave Saville


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org

20060125This posting was submitted with HTML in it

I have one for you.
My last place I worked we had to deal with Type 1 network wiring and we
still had Token ring now I'm not talking about 5 or 6 years ago this was
last year and it ran at a whole 16MBs what fun.

Dan Caissie
Remedy Administrator / Developer
United Natural Foods, Inc
Dayville, CT 06241
(860)779-2800 Ext:32380

-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of CJT.
Sent: Thursday, February 23, 2006 9:54 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Some info off the web re: CAT 5 cable,


URL http://www.danpex.com/faqs/cat5-inst.htm

Extract (DANPEX Corp.):

Anything that kinks the cable or disturbs the precise alignment of the
wire
pairs inside the cable has the potential to create future performance
problems.


URL
http://www.elec-toolbox.com/communications/classifications/cat5/install.
htm

Extract (Electricians Toolbox):

Cat 5 cable requires careful and precise installation to maximize
efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the wire pairs inside the cable has the potential
to
create future performance problems.


URL http://www.delmar.edu/Courses/ITNW1325/sem1/notes/lessons36-39.html

Extract (mpharris@surf.delmar.edu):

Never secure the cable ties too tightly and try to minimize the amount
of
jacket twisting. Never allow the cable to be pinched or kinked. If this
occurs, data will move more slowly and your local area network will
operate
at less than optimal capacity. If you exceed 25 pounds of pull, wires
inside
the cable can untwist. If wire pairs become untwisted, this can lead to
interference and crosstalk.).


URL
http://72.14.207.104/search?q=cache:xnQfC3To9MEJ:www.sonicmario.com/cisc
o/Se
mester%25201/S1Ch09review.htm+CISCO+kinked+rj45+cable&hl=en&gl=au&ct=cln
k&cd
=10

Extract:

Never allow cables to be pinched or kinked. If this occurs, data
throughput
will be reduced, and the LAN will operate at less than optimal capacity.


URL
http://www.commsdesign.com/designcorner/showArticle.jhtml?articleID=165
0546
5

Extract (Jason Knickerbocker, Marvell):

Cat5 cable requires careful and precise installation to maximize
efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the pairs inside the cable has the potential to
create
future performance problems.


URL http://www.derose.net/steve/guides/wiring

Extract (Steve DeRose,):

Never bend CAT5 or higher wire tightly around a corner; make sure it
bends
gradually, so that a whole circle would be at least 2" across.






-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Dave Saville
Sent: Thursday, 23 February 2006 9:52 PM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

On Wed, 22 Feb 2006 20:56:46 -0800, Rick Cook wrote:

>If the wires were bent to the point where they were marginally broken,
it
might cause intermittent failures, but I can't see it just causing
slowness.
Network cables aren't like garden hoses that can have flow controlled.
I
say that electrons either travel, or they don't.

I agree with Rick *if* the cable is cat5. But if it were good old "fat"
ethernet which is co-ax then yes, sharp bends are known to degrade
signal
and
introduce interference on this type of cable.

--
Regards

Dave Saville




UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org



UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org

**
Eric:

Yes. This would be true because the second pair would be lost. However, if the cable were simply kinked in the middle, this would not slow down data. However, if the connector were to be disturbed, not crimped properly, or a wire broken inside the cable or pulled loose from the connector, then the data rate would neogitate to the lower rate be it 100MB or 10MB. However, this would not affect most user's use of the Internet or intranet. However, if this were to happen to a server which happily serves everyone at the higher rate but appears very sluggish at the lower one, the story quickly changes.

James McKenzie


-----Original Message-----
From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG]On Behalf Of Eric Cleereman (IT)
Sent: Thursday, February 23, 2006 7:52 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires


**
Hi James,

It is possible for a damaged cable to work, but have degraded performance. This can happen if a networks uses the 100baseT4 spec.


10baseT uses the the following connections on two pairs:
pin 1 - pin 3
pin 2 - pin 6
pin 3 - pin 1
pin 6 - pin 2

100baseTX uses the same pairs as 10baseT, using a higher quality cable.

For both 10baseT and 100baseTX, if the wires were kinked enough to slow data down, they would not work at all.


100baseT4 uses the same two pairs as 10baseT, plus the following two pairs:

pin 4 - pin 7
pin 5 - pin 8
pin 7 - pin 4
pin 8 - pin 5

I've seen a single instance with 100baseT4 where a cable was bent badly enough that one wires to a pin used by 100baseT4, but not by 10baseT failed to carry a signal. In that single instance, pretty much anything hooked to the cable which was 10/100 capable, would auto negotiate 10, since it could not carry a signal at 100.

Eric Cleereman

**

Chris:

If you have not been told this, the story is false. If the wires were kinked enough to slow data down, they would not work at all.

James McKenzie
-----Original Message-----
From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG]On Behalf Of Chris Doble
Sent: Wednesday, February 22, 2006 6:39 PM
To: arslist@ARSLIST.ORG
Subject: kinked wires


**
Hey folks,

Just a bit curious about something I heard.

A company IT department Director told a VP that the reason some folks pc's were slower than others is that when the installation of the network cables was performed, some of the cables were "kinked". And therefore those people would naturally get slower response times..... blah, blah, blah.


I'd like to find out if anybody out there has experienced this phenomenon.

Thank You,

Chris Doble
Mobile: 949-533-5346
Email: cdoble@aisconsulting.net
Advanced Integrated Solutions Inc.
http://www.aisconsulting.net



20060125This posting was submitted with HTML in it

20060125This posting was submitted with HTML in it

20060125This posting was submitted with HTML in it

20060125This posting was submitted with HTML in it

OK! I have to agree with Shafqat. This thread is a classic and
should be recorded for posterity!

I for one would like to make a nomination for best thread for the up
coming RUG (or whatever we're calling it now). I don't think we have
to look any farther!

Who's with me?

Dan? Comments?

On 2/23/06, CJT. wrote:
> Some info off the web re: CAT 5 cable,
>
>
> URL http://www.danpex.com/faqs/cat5-inst.htm
>
> Extract (DANPEX Corp.):
>
> Anything that kinks the cable or disturbs the precise alignment of the wire
> pairs inside the cable has the potential to create future performance
> problems.
>
>
> URL
> http://www.elec-toolbox.com/communications/classifications/cat5/install.htm
>
> Extract (Electricians Toolbox):
>
> Cat 5 cable requires careful and precise installation to maximize efficiency
> and system performance. Anything that kinks the cable or disturbs the
> precise alignment of the wire pairs inside the cable has the potential to
> create future performance problems.
>
>
> URL http://www.delmar.edu/Courses/ITNW1325/sem1/notes/lessons36-39.html
>
> Extract (mpharris@surf.delmar.edu):
>
> Never secure the cable ties too tightly and try to minimize the amount of
> jacket twisting. Never allow the cable to be pinched or kinked. If this
> occurs, data will move more slowly and your local area network will operate
> at less than optimal capacity. If you exceed 25 pounds of pull, wires inside
> the cable can untwist. If wire pairs become untwisted, this can lead to
> interference and crosstalk.).
>
>
> URL
> http://72.14.207.104/search?q=cache:xnQfC3To9MEJ:www.sonicmario.com/cisco/Se
> mester%25201/S1Ch09review.htm+CISCO+kinked+rj45+cable&hl=en&gl=au&ct=clnk&cd
> =10
>
> Extract:
>
> Never allow cables to be pinched or kinked. If this occurs, data throughput
> will be reduced, and the LAN will operate at less than optimal capacity.
>
>
> URL
> http://www.commsdesign.com/designcorner/showArticle.jhtml?articleID=1650546
> 5
>
> Extract (Jason Knickerbocker, Marvell):
>
> Cat5 cable requires careful and precise installation to maximize efficiency
> and system performance. Anything that kinks the cable or disturbs the
> precise alignment of the pairs inside the cable has the potential to create
> future performance problems.
>
>
> URL http://www.derose.net/steve/guides/wiring
>
> Extract (Steve DeRose,):
>
> Never bend CAT5 or higher wire tightly around a corner; make sure it bends
> gradually, so that a whole circle would be at least 2" across.
>
>
>
>
>
>
> -----Original Message-----
> From: Action Request System discussion list(ARSList)
> [mailto:arslist@ARSLIST.ORG] On Behalf Of Dave Saville
> Sent: Thursday, 23 February 2006 9:52 PM
> To: arslist@ARSLIST.ORG
> Subject: Re: kinked wires
>
> On Wed, 22 Feb 2006 20:56:46 -0800, Rick Cook wrote:
>
> >If the wires were bent to the point where they were marginally broken, it
> might cause intermittent failures, but I can't see it just causing slowness.
> Network cables aren't like garden hoses that can have flow controlled. I
> say that electrons either travel, or they don't.
>
> I agree with Rick *if* the cable is cat5. But if it were good old "fat"
> ethernet which is co-ax then yes, sharp bends are known to degrade signal
> and
> introduce interference on this type of cable.
>
> --
> Regards
>
> Dave Saville
>
>
>
> UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org
>
>
> UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org
>


--
Warren R. Baltimore II
Remedy Developer
UW Medicine IT Services
School of Medicine
University of Washington
Box 358220
1325 Fourth Ave, Suite 2000
Seattle, WA 98101

The opinions expressed in this e-mail are in no way those of the
University of Washington, or the State of Washington. They are my
own.


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org

**
I just checked with a gentleman here who is more familiar with cabling than I and he states he has seen some cabling that goes down hill cause significant acceleration of the bits in the cable and a severe bend of the cable at the end of the down hill stretch will cause the 1's to exit the cable through the sheath because of excessive centripetal acceleration. The 0's however are safe from this event because their width does not allow them to fit through the pores of the sheath...and this causing re-transmits of the 1's in the packet due to crc errors



From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of Shafqat Ayaz
Sent: Thursday, February 23, 2006 7:48 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires


** Hey guys
it is pretty obvious I mean, look at it, if there are kinks then the electrons have to travel further you know like going up and down instead of a straight line, so it would slow them down! everyone knows that a straight line is the shortest distance between two points, I think.
this is a classic and should be recorded for posterity!

shafqat

Dan Caissie wrote:

You are right Rick that if they were bend back and forth like 50 times
or so it could brake the wires inside.
But I would say the problem is with the switch setting or PC they could
be plugged into a 100MB and not a 1Gig Switch or the settings are set
lower all the way down to 10MB and this would make it crawl.
It could also be the settings for there network card or the network card
could just be a slower card not able to run at 1 Gig.

If you ever seen a wiring closet it would scare you most times in most
places.

Do you know if you twist the network wires the data gets corrupted ;)


Dan Caissie
Remedy Administrator / Developer
United Natural Foods, Inc
Dayville, CT 06241
(860)779-2800 Ext:32380


-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Warren Baltimore
Sent: Thursday, February 23, 2006 12:16 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Chris, the ONLY thing that I am aware of related to ethernet cords and
performance is the length of the connection between PC and
router/switch/etc.

Warren

On 2/22/06, Chris Doble wrote:
> **
>
>
> Hey folks,
>
>
>
> Just a bit curious about something I heard.
>
>
>
> A company IT department Director told a VP that the reason some folks
pc's
> were slower than others is that when the installation of the network
cables
> was performed, some of the cables were "kinked". And therefore those
people
> would naturally get slower response times..... blah, blah, blah.
>
>
>
> I'd like to find out if anybody out there has experienced this
phenomenon.
>
>
>
> Thank You,
>
>
>
> Chris Doble
>
> Mobile: 949-533-5346
>
> Email: cdoble@aisconsulting.net
>
> Advanced Integrated Solutions Inc.
>
> http://www.aisconsulting.net
>
>
>
>
>
> 20060125This posting was
> submitted with HTML in it


--
Warren R. Baltimore II
Remedy Developer
UW Medicine IT Services
School of Medicine
University of Washington
Box 358220
1325 Fourth Ave, Suite 2000
Seattle, WA 98101

The opinions expressed in this e-mail are in no way those of the
University of Washington, or the State of Washington. They are my
own.



UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org





Shafqat Ayaz





Relax. Yahoo! Mail virus scanning helps detect nasty viruses! 20060125This posting was submitted with HTML in it
20060125This posting was submitted with HTML in it

**

Please tell me this is early Friday Humor! LOL!



Lisa





From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of L. J. Head
Sent: Thursday, February 23, 2006 11:21 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires



I just checked with a gentleman here who is more familiar with cabling than I and he states he has seen some cabling that goes down hill cause significant acceleration of the bits in the cable and a severe bend of the cable at the end of the down hill stretch will cause the 1's to exit the cable through the sheath because of excessive centripetal acceleration. The 0's however are safe from this event because their width does not allow them to fit through the pores of the sheath...and this causing re-transmits of the 1's in the packet due to crc errors





From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of Shafqat Ayaz
Sent: Thursday, February 23, 2006 7:48 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

** Hey guys
it is pretty obvious I mean, look at it, if there are kinks then the electrons have to travel further you know like going up and down instead of a straight line, so it would slow them down! everyone knows that a straight line is the shortest distance between two points, I think.
this is a classic and should be recorded for posterity!

shafqat

Dan Caissie wrote:

You are right Rick that if they were bend back and forth like 50 times
or so it could brake the wires inside.
But I would say the problem is with the switch setting or PC they could
be plugged into a 100MB and not a 1Gig Switch or the settings are set
lower all the way down to 10MB and this would make it crawl.
It could also be the settings for there network card or the network card
could just be a slower card not able to run at 1 Gig.

If you ever seen a wiring closet it would scare you most times in most
places.

Do you know if you twist the network wires the data gets corrupted ;)


Dan Caissie
Remedy Administrator / Developer
United Natural Foods, Inc
Dayville, CT 06241
(860)779-2800 Ext:32380


-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Warren Baltimore
Sent: Thursday, February 23, 2006 12:16 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Chris, the ONLY thing that I am aware of related to ethernet cords and
performance is the length of the connection between PC and
router/switch/etc.

Warren

On 2/22/06, Chris Doble wrote:
> **
>
>
> Hey folks,
>
>
>
> Just a bit curious about something I heard.
>
>
>
> A company IT department Director told a VP that the reason some folks
pc's
> were slower than others is that when the installation of the network
cables
> was performed, some of the cables were "kinked". And therefore those
people
> would naturally get slower response times..... blah, blah, blah.
>
>
>
> I'd like to find out if anybody out there has experienced this
phenomenon.
>
>
>
> Thank You,
>
>
>
> Chris Doble
>
> Mobile: 949-533-5346
>
> Email: cdoble@aisconsulting.net
>
> Advanced Integrated Solutions Inc.
>
> http://www.aisconsulting.net
>
>
>
>
>
> 20060125This posting was
> submitted with HTML in it


--
Warren R. Baltimore II
Remedy Developer
UW Medicine IT Services
School of Medicine
University of Washington
Box 358220
1325 Fourth Ave, Suite 2000
Seattle, WA 98101

The opinions expressed in this e-mail are in no way those of the
University of Washington, or the State of Washington. They are my
own.



UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org


UNSUBSCRIBE or access ARSlist Archives at http://www.ARSLIST.org







Shafqat Ayaz



Relax. Yahoo! Mail virus scanning helps detect nasty viruses! 20060125This posting was submitted with HTML in it



The information contained in this communication may be CONFIDENTIAL and is intended only for the use of the recipient(s) named above. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited. If you have received this communication in error, please notify the sender and delete/destroy the original message and any copy of it from your computer or paper files.

20060125This posting was submitted with HTML in it 20060125This posting was submitted with HTML in it

Now ain't that somethin? Learn something new every day. I would have thought
bent cables reducing throughput would only apply to fiberoptic cables.

Good info - thanks for posting that. :)

-CW

Jim Fox wrote:

That's what we get for trying to talk about a networking topic on a
software
system list. LOL.

Fluxman

-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of CJT.
Sent: 02/23/2006 9:54 AM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

Some info off the web re: CAT 5 cable,


URL http://www.danpex.com/faqs/cat5-inst.htm

Extract (DANPEX Corp.):

Anything that kinks the cable or disturbs the precise alignment of the wire
pairs inside the cable has the potential to create future performance
problems.


URL
http://www.elec-toolbox.com/communications/classifications/cat5/install.htm

Extract (Electricians Toolbox):

Cat 5 cable requires careful and precise installation to maximize
efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the wire pairs inside the cable has the potential to
create future performance problems.


URL http://www.delmar.edu/Courses/ITNW1325/sem1/notes/lessons36-39.html

Extract (mpharris@surf.delmar.edu):

Never secure the cable ties too tightly and try to minimize the amount of
jacket twisting. Never allow the cable to be pinched or kinked. If this
occurs, data will move more slowly and your local area network will operate
at less than optimal capacity. If you exceed 25 pounds of pull, wires
inside
the cable can untwist. If wire pairs become untwisted, this can lead to
interference and crosstalk.).


URL

http://72.14.207.104/search?q=cache:xnQfC3To9MEJ:www.sonicmario.com/cisco/Se

mester%25201/S1Ch09review.htm+CISCO+kinked+rj45+cable&hl=en&gl=au&ct=clnk&cd
=10

Extract:

Never allow cables to be pinched or kinked. If this occurs, data throughput
will be reduced, and the LAN will operate at less than optimal capacity.


URL

http://www.commsdesign.com/designcorner/showArticle.jhtml?articleID=1650546
5

Extract (Jason Knickerbocker, Marvell):

Cat5 cable requires careful and precise installation to maximize efficiency
and system performance. Anything that kinks the cable or disturbs the
precise alignment of the pairs inside the cable has the potential to create
future performance problems.


URL http://www.derose.net/steve/guides/wiring

Extract (Steve DeRose,):

Never bend CAT5 or higher wire tightly around a corner; make sure it bends
gradually, so that a whole circle would be at least 2" across.






-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:arslist@ARSLIST.ORG] On Behalf Of Dave Saville
Sent: Thursday, 23 February 2006 9:52 PM
To: arslist@ARSLIST.ORG
Subject: Re: kinked wires

On Wed, 22 Feb 2006 20:56:46 -0800, Rick Cook wrote:

>If the wires were bent to the point where they were marginally broken,
>it
might cause intermittent failures, but I can't see it just causing
slowness.
Network cables aren't like garden hoses that can have flow controlled. I
say that electrons either travel, or they don't.

I agree with Rick *if* the cable is cat5. But if it were good old "fat"
ethernet which is co-ax then yes, sharp bends are known to degrade signal
and introduce interference on this type of cable.

--
Regards

Dave Saville




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