[ale] OT: Ethernet wiring

Solomon Peachy pizza at shaftnet.org
Tue Jul 19 14:39:24 EDT 2016


On Tue, Jul 19, 2016 at 01:08:59PM -0400, Jim Kinney wrote:
> Cat6 will do 10G for short runs under 10 meters. The Cat6e is 10G for the
> full run of 300 meters.
> Cat5e will do 1G for 300 meters.
> Cat5 is 100M for 300m and 1G for 10m.

Perhaps you meant 300 feet, not meters?  (well, 328 to be precise)

Ethernet over twisted-pair is only spec'd for 100 meters. It's not just 
a matter of signal integrity (though higher quality cable certianly 
helps) but beyond 100 meters the propogation delay exceeds the timing 
allowances in the low-level link layer protocol.

 - Solomon
-- 
Solomon Peachy        		       pizza at shaftnet dot org
Delray Beach, FL                          ^^ (email/xmpp) ^^
Quidquid latine dictum sit, altum viditur.
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