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[ale] OT: Ethernet wiring
- Subject: [ale] OT: Ethernet wiring
- From: pizza at shaftnet.org (Solomon Peachy)
- Date: Tue, 19 Jul 2016 14:39:24 -0400
- In-reply-to: <CAEo=5PxQmeGbfEvSA2DcE24cToFzS1_Zy_riPzHNMcoh60MOQQ@mail.gmail.com>
- References: <CABo2fvBu9TnWwo8hVRhKH2AFBfH9Uc5OKOOo0TdZ0yiSHVTMwA@mail.gmail.com> <CABo2fvAZZa6rXp3JVbzcVO-VY6i=c+5_3po5FZ-oG+_fNqJhkw@mail.gmail.com> <[email protected]> <[email protected]> <CAEo=5PxQmeGbfEvSA2DcE24cToFzS1_Zy_riPzHNMcoh60MOQQ@mail.gmail.com>
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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