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Syeed Ali via plug on 30 Aug 2024 11:42:53 -0700
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Re: [PLUG] SOLVED!: Throughput Reduction thru Router
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- From: Syeed Ali via plug <plug@lists.phillylinux.org>
- To: plug@lists.phillylinux.org
- Subject: Re: [PLUG] SOLVED!: Throughput Reduction thru Router
- Date: Fri, 30 Aug 2024 11:42:38 -0700
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- Reply-to: plug@lists.phillylinux.org, Syeed Ali <syeedali@syeedali.com>
- Sender: "plug" <plug-bounces@lists.phillylinux.org>
On Sun, 25 Aug 2024 14:11:26 -0400
Casey Bralla via plug <plug@lists.phillylinux.org> wrote:
> * The cable lookes good visually. Injection Molded plugs. No kinks
> or bends. It had printing on the wire that said: "ETL VERIFIED
> EIA/TIA-568A CAT 5 UTP EVERNEW" (I'm assuming this is for the base
> wire, not the assembly)
> * Cable tester showed that _*2 pairs were dead*_. It was only
> transmitting with half the number of pairs.
> * I can see what looks like infiltration of the clear RJ-45 plug by
> plastic during the injection molding process. Maybe the plastic
> is insulating some of the pins.
I can't recall where I learned this, but professionals in
exacting-needs circumstances don't even trust expensive "quality"
brands because batches come out with varying-quality results. I was
told they have tens of thousands of dollars worth of testing equipment
used for every single length before installation.
(I don't understand why they can't just use a random laptop at both
ends, and do some cool testing I don't understand, but that's not my
field.)
I'd guess that all it takes is that one crimp that one time when you
closed a door on it but it worked okay so no harm done, plus a little
age and bending and things become more erratic than internal error
checking can reasonably handle.
I'm sure things get fun when you use flat cables! :)
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