[Discuss] Future-proofing a house for networking -- what to run?

grg grg-webvisible+blu at ai.mit.edu
Thu Sep 14 09:11:36 EDT 2017


On Wed, Sep 13, 2017 at 10:36:40PM -0400, Richard Pieri wrote:
> On 9/13/2017 10:13 PM, Robert Krawitz wrote:
> > This is 1000Base-T, with standard cat 5e cable.  scp isn't much slower.
> 
> You're using full-duplex with Cat 5e? You're off spec. And now I'm
> wondering if the data corruption problems you were having a few weeks
> ago were a consequence of it.

Which spec are you referring to?  Please cite your source.

FWIW (some, but never the definitive answer) Wikipedia disagrees with you:
"Each 1000BASE-T network segment can be a maximum length of 100 meters (330
feet), and must use Category 5 cable or better (including Cat 5e and Cat 6)."
	https://en.wikipedia.org/wiki/Gigabit_Ethernet#1000BASE-T
So with 5e he's actually a grade above the minimum cat5.
(Note the top of that article says that full duplex is used exclusively, so
they're not talking about half duplex operation over cat5 or 5e or cat6.)

--grg



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