minimum cat6 cable length?

Talk about "WhatEVER !"..
Post Reply
Message
Author
ducky2802
Junior Member
Junior Member
Posts: 306
Joined: Mon Mar 05, 2007 11:16 am
Location: San Diego, CA

minimum cat6 cable length?

#1 Post by ducky2802 » Sat Mar 13, 2010 8:33 pm

Hi everyone,

Ive been running custom length cables between my modem, router, and gigabit switch, which are all about 3-4 inches apart.

Ive made a bunch of cat5 and cat6 cables in lengths from 3" to 3'.

Switch to router works fine with any size cat5/cat6 cable from 2" up to a few feet.
Router to modem with cat6 less than 24" doesnt work, but works okay with cat5 down to 6" lengths.

Im no networking expert by any means, but Im hoping someone out in thinkpad-land knows if there is a minimum I need to maintain (please, Im running out of bulk cable!).

rkawakami
Admin
Admin
Posts: 10053
Joined: Sun Jun 04, 2006 1:26 am
Location: San Jose, CA 95120 USA
Contact:

Re: minimum cat6 cable length?

#2 Post by rkawakami » Sat Mar 13, 2010 9:16 pm

Googling shows this: http://forums.bicsi.org/Topic2210-4-1.aspx 0.5 meters, or roughly 20" is the implied minimum length for Cat6 according to one poster.

2 inches????? :shock: I've made my own Cat5 cables but never less than 6 feet.
Ray Kawakami
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.

ducky2802
Junior Member
Junior Member
Posts: 306
Joined: Mon Mar 05, 2007 11:16 am
Location: San Diego, CA

Re: minimum cat6 cable length?

#3 Post by ducky2802 » Sat Mar 13, 2010 11:04 pm

Thanks!!!!! Yeah, Ive been on an underdesk cleaning binge and the lan cables are on my shortlist. :D

rkawakami
Admin
Admin
Posts: 10053
Joined: Sun Jun 04, 2006 1:26 am
Location: San Jose, CA 95120 USA
Contact:

Re: minimum cat6 cable length?

#4 Post by rkawakami » Sun Mar 14, 2010 12:39 am

Then you certainly don't want to see how my DSL modem (2 Wirespeeds actually; one is a backup), Netgear RT314 router, Netgear PS110 print server, Netgear switch and D-Link ( :!: :?: ) WRT54G WAP (Netgear ME102 is currently off-line due to a cat issue :) ) are all lashed together :lol: .

(And when I say "cat", it's not Cat5/Cat6 cabling I'm talking about... one of my felines got behind my desk and managed to pull out the AC brick for the ME102 from the wall outlet. There's no way I can reach down there and plug it back in. Might have to pull out my Gateway tower and see if I can reach through the back side of the desk....)
Ray Kawakami
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.

BillMorrow
*Senior* Admin
*Senior* Admin
Posts: 7154
Joined: Tue Apr 13, 2004 9:40 pm
Location: San Francisco -> Florida -> Georgia
Contact:

Re: minimum cat6 cable length?

#5 Post by BillMorrow » Sun Mar 14, 2010 1:37 am

i never thought there WAS a minimum length except that amount needed to reach from one RJ41 to the other RJ41..

and having just run a cat 5e from my router to the TV i can say that 117 feet (so says my cable tester) works just fine though now thatn i mention it i'm not sure what sure its running at..

my question would be "how close to AC wiring can you get and not have some sort of crosstalk spoil the signal..?
Bill Morrow, kept by parrots :parrot: & cockatoos
Sysop - forum.thinkpads.com

*
She was not what you would call refined,
She was not what you would call unrefined,
She was the type of person who kept a parrot.
~~~Mark Twain~~~

ducky2802
Junior Member
Junior Member
Posts: 306
Joined: Mon Mar 05, 2007 11:16 am
Location: San Diego, CA

Re: minimum cat6 cable length?

#6 Post by ducky2802 » Sun Mar 14, 2010 2:54 pm

It sounds like I just might break down! haha, yep, Im running my belkin N router with a linksys wrt54G backup (those things just refuse to die!), two dlink switches and a motorola modem. It was a mess with wires everywhere! Now, everything looks nice and clean (I even splice the adaptors so 1 power adaptor for 2-3 network appliances) and except for the modem to router, everything is cat6 (though, for the 20ft to my server and the 1ft to most networking gear, I say its overkill, but I got a great deal on a 250' spool of cat6 cable!)

"my question would be "how close to AC wiring can you get and not have some sort of crosstalk spoil the signal..?"

Ive actually run power cables and network cables in a 1/2" split loom tubing for ~8ft together, and havent noticed any slowdowns doing a simple 100gb transfer between comp/server. And since Im broke after the computers, Ive got one machine across a few rooms on a 100' cat5 cable streaming HD and appears no signal loss on gigabit lan.

killer
ThinkPadder
ThinkPadder
Posts: 1483
Joined: Mon May 28, 2007 5:26 am
Location: West Sussex, UK

Re: minimum cat6 cable length?

#7 Post by killer » Sun Mar 14, 2010 5:17 pm

I run my network through the house electricity ring main. It is quite simple and uses homeplugs. Look homeplugs up on any search engine. The ring main doesn't interfere with network signals.
T540p Win 7 Pro 64

X1 Carbon Win 7 Pro 64 for my wife.

Time flies like an arrow; fruit flies like a banana.

Dogs must be carried on the escalator. Where can I find a dog?

BillMorrow
*Senior* Admin
*Senior* Admin
Posts: 7154
Joined: Tue Apr 13, 2004 9:40 pm
Location: San Francisco -> Florida -> Georgia
Contact:

Re: minimum cat6 cable length?

#8 Post by BillMorrow » Sun Mar 14, 2010 5:28 pm

50 ~ (in UK) vs. whatever frequency the LAN runs at is not likely to interfere given all the filtering that must go on in the AC -> ethernet adapters..

i suppose i can give it a try..

meanwhile, aside from the security of a hardwired LAN, wifi is available too..
but this samsung TV won't accept a wifi USB dongle unless it is a samsung wifi USB dongle..

i did consider the AC wiring solution but the $200 initial price tag kinda put me off..

especially since i intend to run several video cameras..
Bill Morrow, kept by parrots :parrot: & cockatoos
Sysop - forum.thinkpads.com

*
She was not what you would call refined,
She was not what you would call unrefined,
She was the type of person who kept a parrot.
~~~Mark Twain~~~

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “Off-Topic Stuff”

Who is online

Users browsing this forum: axur-delmeria and 6 guests