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Groups > comp.os.linux.networking > #2814

Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender

From Dan Purgert <dan@djph.net>
Newsgroups alt.os.linux, alt.os.linux.ubuntu, comp.os.linux.networking
Subject Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender
Date 2014-03-09 21:19 -0400
Organization A noiseless patient Spider
Message-ID <531D1308.7050305@djph.net> (permalink)
References (1 earlier) <531B1133.3030405@djph.net> <46871$531b684c$43da7656$13519@nntpswitch.blueworldhosting.com> <slrnlhnlks.bv7.BitTwister@wb.home.test> <87r46bokae.fld@apaflo.com> <aaf5c$531c7d84$43da7656$31899@nntpswitch.blueworldhosting.com>

Cross-posted to 3 groups.

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On 09/03/2014 10:40, Liam O'Connor wrote:
> On Sat, 08 Mar 2014 23:20:25 -0900, Floyd L. Davidson wrote:
> 
>> The simple fact is, his statement about the color not making any
>> difference is exactly right.  It doesn't.
> 
> At the risk of inserting myself into a conversation where I have
> no business being in due to my almost total lack of the history
> involved ... here's what happened ...
> 
> 0. Having never strung cabling before, I looked it up.
> 1. I was surprised to see (at least) two main wiring standards.

Yep, T568A and B.  The only difference is where the green and orange
pairs are.

> 2. Looking at the difference, I realized the copper didn't care.
> 3. That is, had the wires been bare, the copper is the same on both.
> 4. The only difference was the color of the insulation on the wires.

Yes, yes, yes. It's kinda like home electrical wiring ... you *could*
use any color wire you wanted (since "the copper doesn't care"), but the
standard is:

Black = Hot
White = Neutral
Green (or bare) = Ground.

110V 3-Way wiring adds in Red (secondary hot)

220V or higher adds in other "Hot" conductors (I think Yellow, possibly
Red).

Granted, this is a "for safety" standard as compared to the "for sanity"
telecomms standard ... but the idea is the same -- you want to make the
guy checking it out 2 years down the road to not have to guess at WTF
you were up to.

> 5. Still unsure, I checked all my patch cables lying around.
> 6. It was hard to see inside connectors, even with a magnifying glass.
> 7. However, all my patch cables (except xover) were the same scheme.
> 8. So, that's the color scheme I ended up using! :)
> 
> [...]
>
> So, since color didn't seem to matter, functionally, I wondered *why*
> they had two main standards for me to choose from. 

Mainly, it's a "sanity" thing.  Also, if you look at them side by side
(or as close as I can get in text), it might be easier:


568A: ................. 568B:

1. Lt. Orange (TX) .... 1. Lt. Green (TX)
2. Orange (TX) ........ 2. Green (TX)
3. Lt. Green (RX)...... 3. Lt. Orange (RX)
4. Blue ............... 4. Blue
5. Lt. Blue ........... 5. Lt. Blue
6. Green .............. 6. Orange (RX)
7. Lt. Brown .......... 7. Lt. Brown
8. Brown .............. 8. Brown

As you can (hopefully) see, wiring one end of a cable as 568A and the
other 568B will create a crossover cable (that is, the Transmit (TX)
pair on one end is the Receive (RX) pair on the other end).  This isn't
a huge deal since most ports these days are auto-sensing (i.e. they
figure out which pairs the other end is transmitting on, and set that as
RX, then TX as the other pair), but it was necessary in the early days
of Ethernet networking, since most devices were not auto-sensing.

-Dan

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Thread

How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-08 00:53 -0800
  Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Dan Purgert <dan@djph.net> - 2014-03-08 07:46 -0500
    Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-08 10:56 -0800
    Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-08 10:58 -0800
      Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-08 11:51 -0800
      Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Dan Purgert <dan@djph.net> - 2014-03-08 15:25 -0500
      Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Scott Hemphill <hemphill@hemphills.net> - 2014-03-08 21:07 -0500
        Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Scott Hemphill <hemphill@hemphills.net> - 2014-03-08 21:18 -0500
        Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-08 20:49 -0800
        Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Mark Lloyd <mark@this.is.not.email.invalid> - 2014-03-09 10:50 -0500
      Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Bit Twister <BitTwister@mouse-potato.com> - 2014-03-09 02:49 +0000
        Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-08 20:51 -0800
          Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-08 23:56 -0900
            Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-09 09:39 -0700
              Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-09 11:07 -0800
        Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-08 23:20 -0900
          Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-09 07:40 -0700
            Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Dan Purgert <dan@djph.net> - 2014-03-09 21:19 -0400
          Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-09 09:21 -0700
            Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-09 10:57 -0800
              Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-09 16:07 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-09 17:05 -0800
            Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-10 10:40 -0700
              Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-10 12:06 -0800
              Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-10 20:07 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-11 02:36 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-11 19:30 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-11 23:13 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-12 21:30 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-13 04:44 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-13 20:20 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-13 20:30 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-13 22:59 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender mechanic <mechanic@example.net> - 2014-03-14 11:31 +0000
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-14 21:50 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-14 04:31 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender mechanic <mechanic@example.net> - 2014-03-14 13:45 +0000
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-14 07:26 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender John Hasler <jhasler@newsguy.com> - 2014-03-14 11:07 -0500
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-14 10:23 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-14 22:02 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-14 21:53 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-15 09:49 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender mechanic <mechanic@example.net> - 2014-03-15 10:45 +0000
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-15 09:57 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-15 12:28 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-15 14:02 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-15 14:22 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-15 21:55 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-15 21:25 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-14 21:54 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-14 21:58 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-11 19:33 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-11 23:36 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender ceed <ceed@is.indeed.invalid> - 2014-03-12 17:05 +0000
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-12 21:48 -0700
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-13 04:46 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Eef Hartman <E.J.M.Hartman@tudelft.nl> - 2014-03-12 19:27 +0000
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender floyd@apaflo.com (Floyd L. Davidson) - 2014-03-12 13:32 -0800
                Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-13 19:18 -0700
    Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-08 10:59 -0800
    Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-08 11:01 -0800
      Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Dan Purgert <dan@djph.net> - 2014-03-08 15:36 -0500
        Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-08 19:06 -0800
          Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2014-03-08 20:54 -0800
          Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Dan Purgert <dan@djph.net> - 2014-03-09 08:03 -0400
            Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Liam O'Connor <liamoconnor@example.com> - 2014-03-09 07:56 -0700
  Re: How to set up a spare Linksys WRT54Gv2 as a wired access point network extender Big Bad Bob <BigBadBob-at-mrp3-dot-com@testing.local> - 2014-03-08 17:42 -0800

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