Account
♦ Password
♦ Mailsetup
♦ Info
Services
♦ Workstations
  ♣ Linux
  ♣ MacOS
♦ E-Mail
♦ Chat
♦ Files
♦ Backups
♦ Printers
♦ Network
♦ Statistics
♦ Downloads
♦ Links
News
♦ Newsletter
♦ Submit
♦ Search
Readme
Hacks
♦ Linux
Tools
Contact
About


  Packet loss
Experiences Posted by Beat Rubischon on Thursday March 18, @03:39PM
from the why-you-should-use-good-cables dept.
"My printer isn't working." "I can't open my Powerpoint presentation." "Your server is awfully slow!" OK, we check the queues, the computer, the printer itself - but stop. This is not one of our network cables...

It was not the first time we saw a unshielded Cat3 network cable. They are enough for 10MBit connections but much too weak for 100MBit. You recognise such a cable on the transparent connectors.

Cat5 cables are shielded (even the connectors!) and usually all 8 wires connected through. They are ready for 100MBit and 1GBit connections.

Usually you will get a connection to the network with a wrong cable and you will be able to surf, read mail or share files. But the first time you try to transfer a lot af data, you will encounter a really slow transfer rate. Typically you should get about 8-12 MBytes transfer per second - with a wrong cable, it's usually less then a few hundred kilobytes.

A broken or wrong cable takes up to a day to be discovered. The fault will be searched in the servers performance, network throughput or on the client. So be sure to use a good cable. You may get them from your IT supporter or in our office!

<  |  >

 

  Related Links
  • Articles on Experiences
  • Also by Beat Rubischon
  • Contact author
  • The Fine Print: The following comments are owned by whoever posted them.
    ( Reply )

    © 2003 ISG, Departement Physik, ETH Zürich, <isg@phys.ethz.ch>