Re: [AFMUG] Ethernet 100M Copper Limit

[Jesse DuPont]

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: jesse.dup...@celeritycorp.net Celerity Networks LLC Celerity Broadband LLC Like us! facebook.com/celeritynetworksllc Like us! facebook.com/celeritybroadband On 1/14/19 4:03 PM, ch...@wbmfg.com 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: jesse.dup...@celeritycorp.net Celerity Networks LLC Celerity Broadband LLC Like us! facebook.com/celeritynetworksllc Like us! facebook.com/celeritybroadband -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com

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