From: kev@sol.acs.unt.edu (Kevin W. Mullet)
Subject: Re: How do you connect 10baseT?
Organization: University of North Texas
Distribution: usa
Date: Wed, 26 Aug 1992 03:05:41 GMT

In comp.dcom.lans.ethernet you write:
>How do I go about cableing together two computers
>using 10baseT. One will been a Unix file server,
>the other will be a DOS machine. Is it just
>UTP with RJ45's wired straight thru or what?
>I am kinda new to this.
>Thanks
>-Peter
>peter@miller.cs.uwm.edu

10BaseT uses an arrangement like this:

computer <--patch cable -->10BaseT hub<---patch cable---->computer
			      |
			      |
		         patch cable
			      |
			      |
                           computer

Basically lots of computers all attached to a central hub via
unshielded twisted pair (data-grade).

If you're looking for a cheap way to attach two computers, you can't
beat 10Base2, otherwise known as thinnet or thin Ethernet.  It's like
this:

computer        computer          computer            computer
===|===============|=================|===================|==========

Assuming you need to just telnet and ftp to the Unix box from the PC,
thinnet is a whole lot cheaper and easier for just a couple of nodes.  If
the nodes are going to be many rooms apart and in greater number, then you 
may want to take the plunge into 10BaseT.

The approximate cost with 10Base2 between your PC and UNIX box,
assuming the UNIX box already has software and an AUI Ethernet
interface:

transceiver for UNIX box to attach to thinnet -> 150.00
AUI cable for use with transceiver ------------>  40.00
Ethernet card for PC --------------------------> 150.00
Telnet/FTP/etc... for PC ----------------------> free (many p.d. ver. avail.)
Cable, connectors ----------------------------->  75.00
			    TOTAL? ===========>> 415.00

The approx. cost with 10BaseT between your PC and UNIX box, also assuming
the UNIX box already has software and an AUI Ethernet interface:

transceiver for UNIX box to attach to 10BaseT -> 150.00  (that's high actually)
AUI cable ------------------------------------->  40.00
Ethernet card for PC --------------------------> 150.00
Telnet/FTP/etc... for PC ----------------------> free (see above)
Cable, connectors for patch cables ------------>  50.00
Cheap 12-port 10BaseT concentrator (HUB)-------> 300.00
			     TOTAL? ==========>> 690.00

Notes:
  - Actually, there's probably some cheaper 4 or 5 port concentrators
    available for a bit less than 300.
  - Some vendors are coming out with 4 or 5 port concentrators-on-a-card
    that go in a PC and negate the need for an external hub, but they
    cost about the same as a small hub.
  - Although you can do Telnet, FTP, RCP, RSH, REXEC, and LPR all with 
    free software off the Internet between your PC and the UNIX box, you
    would probably need to shell out about 300.00 for software to 
    make your PC an NFS client.


Hope this helps,

-KwM-
-- 
Kevin Mullet <kev@unt.edu>                 |  ALL OPINIONS STATED ABOVE
Data Communication Analyst                 |  ARE MY OWN AND NOT ASSOCIATED
University of North Texas Computing Center |  IN ANY WAY WITH UNT.
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