Welcome to Linux Knowledge Base and Tutorial
"The place where you learn linux"
IndexSoft

 Create an AccountHome | Submit News | Your Account  

Tutorial Menu
Linux Tutorial Home
Table of Contents

· Introduction to Operating Systems
· Linux Basics
· Working with the System
· Shells and Utilities
· Editing Files
· Basic Administration
· The Operating System
· The X Windowing System
· The Computer Itself
· Networking
· System Monitoring
· Solving Problems
· Security
· Installing and Upgrading
· Linux and Windows

Glossary
MoreInfo
Man Pages
Linux Topics
Test Your Knowledge

Site Menu
Site Map
FAQ
Copyright Info
Terms of Use
Privacy Info
Disclaimer
WorkBoard
Thanks
Donations
Advertising
Masthead / Impressum
Your Account

Communication
Feedback
Forums
Private Messages
Surveys

Features
HOWTOs
News Archive
Submit News
Topics
User Articles
Web Links

Google
Google


The Web
linux-tutorial.info

Who's Online
There are currently, 79 guest(s) and 0 member(s) that are online.

You are an Anonymous user. You can register for free by clicking here

  

HOWTO Home

Current HOWTO: Linux Ethernet-Howto


Linux Ethernet-Howto: Cables, Coax, Twisted Pair Next Previous Contents

5. Cables, Coax, Twisted Pair

If you are starting a network from scratch, you will probably be using Cat5 wire for 10/100baseT (twisted pair telco-style cables with RJ-45 eight wire `phone' connectors). If you stumble across some old surplus 10Base2 thin ethernet (RG58 co-ax cable with BNC connectors) it might be suitable for linking a few machines together in a home ethernet. The old-fashioned thick ethernet, RG5 or RG8 cable with N connectors is really obsolete and rarely seen anymore.

See Type of cable... for an introductory look at cables. Also note that the FAQ from comp.dcom.lans.ethernet has a lot of useful information on cables and such. FTP to rtfm.mit.edu and look in /pub/usenet-by-hierarchy/ for the FAQ for that newsgroup.

5.1 Thin Ethernet (thinnet)

Thinnet (10Base-2) is pretty much obsolete now. It is fine for somebody playing around with a home network and old ISA cards. There are two main drawbacks to using thinnet. The first is that it is limited to 10Mb/sec - 100Mb/sec requires twisted pair. The second drawback is that if you have a big loop of machines connected together, and some bonehead breaks the loop by taking one cable off the side of his tee, the whole network goes down because it sees an infinite impedance (open circuit) instead of the required 50 ohm termination. Note that you can remove the tee piece from the card itself without killing the whole subnet, as long as you don't remove the cables from the tee itself. And if you are doing a small network of two machines, you still need the tees and the 50 ohm terminators -- you can't just cable them together! It is also vital that your cable have no `stubs' -- the `T' connectors must be attached directly to the ethercards.

5.2 Twisted Pair

Twisted pair networks require active hubs, which start around $50. You can pretty much ignore claims that you can use your existing telephone wiring as it is a rare installation where that turns out to be the case.

On the other hand, all 100Mb/sec ethernet proposals use twisted pair, and most new business installations use twisted pair. The wiring should be listed as Category 5. Anything less than Cat 5 is useless.

If you are only connecting two machines, it is possible to avoid using a hub by purchasing or making a special cross-over or null cable. But note that some cards that try to sense autonegotiation and so on expect to be talking to a hub and not another card, and thus may not work in this configuration.


Next Previous Contents

The Linux Tutorial completely respects the rights of authors and artists to decide for themselves if and how their works can be used, independent of any existing licenses. This means if you are the author of any document presented on this site and do no wish it to be displayed as it is on this site or do not wish it to be displayed at all, please contact us and we will do our very best to accommodate you. If we are unable to accommodate you, we will, at your request, remove your document as quickly as possible.

If you are the author of any document presented on this site and would like a share of the advertising revenue, please contact us using the standard Feedback Form.


  
Help us cut cost by not downloading the whole site!
Use of automated download sofware ("harvesters") such as wget, httrack, etc. causes the site to quickly exceed its bandwidth limitation and therefore is expressedly prohibited. For more details on this, take a look here

Login
Nickname

Password

Security Code
Security Code
Type Security Code


Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

Help if you can!


Amazon Wish List

Did You Know?
You can get all the latest Site and Linux news by checking out our news page.


Friends



Tell a Friend About Us

Bookmark and Share



Web site powered by PHP-Nuke

Is this information useful? At the very least you can help by spreading the word to your favorite newsgroups, mailing lists and forums.
All logos and trademarks in this site are property of their respective owner. The comments are property of their posters. Articles are the property of their respective owners. Unless otherwise stated in the body of the article, article content (C) 1994-2013 by James Mohr. All rights reserved. The stylized page/paper, as well as the terms "The Linux Tutorial", "The Linux Server Tutorial", "The Linux Knowledge Base and Tutorial" and "The place where you learn Linux" are service marks of James Mohr. All rights reserved.
The Linux Knowledge Base and Tutorial may contain links to sites on the Internet, which are owned and operated by third parties. The Linux Tutorial is not responsible for the content of any such third-party site. By viewing/utilizing this web site, you have agreed to our disclaimer, terms of use and privacy policy. Use of automated download software ("harvesters") such as wget, httrack, etc. causes the site to quickly exceed its bandwidth limitation and are therefore expressly prohibited. For more details on this, take a look here

PHP-Nuke Copyright © 2004 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.
Page Generation: 2.22 Seconds