Why Is Ethernet Limited to 100 Metres? Channel, Permanent Link and the 90 Plus 10 Rule
The 100 metre limit is not a property of Ethernet. It is a property of the cabling standard, and it is a loss budget rather than a distance. This guide explains the 90 metre permanent link and the 10 metres left for cords, why the channel is the thing your electronics actually sees, what really happens past the limit, why 10GBASE-T stops at 37 metres over Category 6, how heat in an Australian roof space shortens a compliant run, and the three limits almost nobody checks. Includes diagrams, the cord length equation and a short FAQ.
Read article →












