[comp.dcom.lans] Basic ethernet wire length question

pcb@basin04.cacs.usl.edu (Peter C. Bahrs) (02/20/91)

Sorry for this questions but here goes...I am setting up a new
network...compuads 386's, compuad/WD ethernet cards, and netware 386.
Software: drivers, win3, tcp, ipx, ... no problem

I am going to get rg58 wire.  What are the length limits on thin wires 
between machines?  Where can I find a book to tell me this?
My other two nets have wires about 5' long.  I want to connect two 
machines to the server which is located in another room with the main
lab.  The distance is about 120'.  Do I need a piece of thick?
If so, do I need a repeater or can I just connect the thick
to thin on each end?


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| Peter C. Bahrs                                                         |
| The USL-NASA Project                                                   |
| Center For Advanced Computer Studies      INET: pcb@swamp.cacs.usl.edu |
| 2 Rex Street                                                           |
| University of Southwestern Louisiana      ...!uunet!dalsqnt!gator!pcb  | 
| Lafayette, LA 70504                                                    |
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gaj@hpctdja.HP.COM (Gordon Jensen) (02/21/91)

>/ hpctdja:comp.dcom.lans / pcb@basin04.cacs.usl.edu (Peter C. Bahrs) /  7:52 pm  Feb 19, 1991 /
>Sorry for this questions but here goes...I am setting up a new
>network...compuads 386's, compuad/WD ethernet cards, and netware 386.
>Software: drivers, win3, tcp, ipx, ... no problem

>I am going to get rg58 wire.  What are the length limits on thin wires 
>between machines?  Where can I find a book to tell me this?
>My other two nets have wires about 5' long.  I want to connect two 
>machines to the server which is located in another room with the main
>lab.  The distance is about 120'.  Do I need a piece of thick?
>If so, do I need a repeater or can I just connect the thick
>to thin on each end?

The maximum length for a single thinlan segment is 185 meters, so you
should be fine.  Hooking thinlan to thicklan directly together works 
on the bench or in an emergency, but I don't think it's a very good
idea for permanent installations.  The IEEE specification will tell
you more than you ever wanted to know and is where I go when I have a 
question.