Actually, the standards specify 90 meters for the long run with two
patch cords on either side that can be up to 5 meters long.
Ken Hohhof wrote:
There is a timing consideration if running half duplex, the guard
interval will not be sufficient if the cable distance is > 100 meters.
You may be able to go a little farther than 100 meters on cable with
excellent attenuation and crosstalk characteristics (e.g. Cat6) if
using full duplex.
*From:* AF <[email protected]> *On Behalf Of *Jesse DuPont
*Sent:* Monday, January 14, 2019 5:12 PM
*To:* AnimalFarm Microwave Users Group <[email protected]>; [email protected]
*Subject:* Re: [AFMUG] Ethernet 100M Copper Limit
Well, I meant Ethernet generically. Regardless of 4-wire vs 8-wire, in
general, the purported safe distance for an Ethernet over copper (as
opposed to fiber) connection is 100 meters. What drives this safe
distance limitation spec?
*Jesse DuPont*
Network Architect
email: [email protected]
<mailto:[email protected]>
Celerity Networks LLC
Celerity Broadband LLC
Like us! facebook.com/celeritynetworksllc
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On 1/14/19 4:03 PM, [email protected] <mailto:[email protected]> wrote:
I presume you are talking about 4 wire Ethernet because we do GigE
all the time on copper.
GigE uses all 8 wires and has data flowing both directions.
100 Mbps E uses 4 wires (2 pair) with TX on one pair and RX on the
other pair.
GigE uses advanced modulation methods as well.
Does that help?
*From:*Jesse DuPont
*Sent:*Monday, January 14, 2019 3:58 PM
*To:*AnimalFarm Microwave Users Group
*Subject:*[AFMUG] Ethernet 100M Copper Limit
I figured this was the best place to ask this question:
What is the primary reason for the 100M limit on copper Ethernet
links? Is it related to bit errors/SNR or is there a timing
element involved? Something else?
Thanks!
--
*Jesse DuPont*
Network Architect
email: [email protected]
<mailto:[email protected]>
Celerity Networks LLC
Celerity Broadband LLC
Like us! facebook.com/celeritynetworksllc
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*Cyber Broadband
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