Broadband (Cable, DSL, Satellite, Fiber Optics)/Fiber Optic Cables



I have a question about fiber optic cables.

I live in a two storey house. The modem is downstairs. The computer downstairs close to the modem has good internet speed. I have connected the upstairs computer to the same modem with a 20 meter cat 6 cable, however  the internet speed is diminished because of the long cable. I want to change this 20 meter cat 6 cable with a fiber optic cable to get the same internet speed as the downstairs computer. Could you please tell me how to do this and what cables and converters I need to buy.

Many thanks


Ethernet can go 10 times the distance as 20 meters before suffering degradation.  In addition, Ethernet is a binary on-off signal not an analog signal.  As a result when you exceed the maximum diameter of an Ethernet segment, things just stop working completely.

If your not getting the same speed upstairs then the most likely explanation is that the switch in use at the "modem" is not negotiating properly with the upstairs computer.  This could be due to a cable installation error or Ethernet chip incompatability.

However, in all likelihood it isn't even the Ethernet cable at all.  

Carry the upstairs computer downstairs and set it up next to the modem.  If it works properly there, then call a low voltage wiring contractor who does Ethernet installations to come in and properly cable the home.


Broadband (Cable, DSL, Satellite, Fiber Optics)

All Answers

Answers by Expert:

Ask Experts


Ted Mittelstaedt


I will answer questions on the following kinds of High Speed Internet connectivity; ISDN, Frame Relay, dedicated T1, higher speeeds such as DS3/OC3, wireless such as 802.11 and DSL. No questions on dialup V90 or Cable access. I can also answer questions on many types of Cisco routers, and a number of other brands of business routers as well.


I am the technical manager of Internet Partners Inc. an ISP.

I've written a book titled "The FreeBSD Corporate Networker's Guide" published by Addison Wesley

©2016 All rights reserved.