[comp.sys.amiga.hardware] Dorms are getting 10-Base-T ethernet! What do i do!???!!! <HELP!!>

jeremym@chopin.udel.edu (Jeremy A Moskowitz) (05/16/91)

Here's a message I got that's some official low-down:

     You'll have a wall outlet with 4 rj45 connectors.  Each connector could
connect to a phone, or a 10base-T ethernet controller.  You'll probably get
one of the 4 connectors activated for a phone.  You'll get AT LEAST one of
the connectors activated for 10base-T.  You MIGHT get two connectors activated
for 10base-T.  The issue of one/two 10base-T connectors being activated is
the cost of the network hardware to support it.  The proposal, which sounds
like it will be funded, is to get enough network hardware to activate one
10base-T connection per room.  Housing might decide to put up the money
to provide the additional 10base-T connection.

     The 4 rj45 connectors will each be wired--each connector will have
two twisted pairs.  So, each room will have 8 twisted pairs run from a
wiring closet.  The wiring closet is where the network equiptment will
be installed.  This equiptment consists of 10base-T hubs and a router.
The 10base-T hub is a box of electronics which can connect 12 (or so)
10base-T cables.  To support more 10base-T connections per room more
10base-T hubs would be needed.  The router could support however
many 10base-T hubs that were installed.  The wiring would already be there.


     If you just want to hook up one system, you'll need a 10base-T
ethernet controller for that system.  For pc clone type systems, you'll be
able to buy one from the Computer Warehouse (the new name for the Microcomputer
Service Center) for about $120.00.

     For your Amiga, if you get an ethernet controller that has an AUI
(15 pin D connector -- I don't know what that costs) you'll need a
10base-T to AUI adaptor (about $140.00) to connect it to the rj45.

     If Housing decides that there will only be one active 10base-T connector,
and you have some money, and you want to spend it on ethernet hardware to
connect up two or more systems you can install your own 10base2 ethernet.
I think you can buy a lot of these parts from Radio Shack or someplace like
that.

     To install your own 10base2 (thinnet or cheapernet) for system you
would need: a T bnc connector, and some rg58 cable with connectors on each
end.  This might cost $10-$40 for each system.  You would also need two
thinnet terminators (a connector with a resistor inside) for maybe $10 each.
Then you would need a 10base2 to 10base-T repeater that costs about $400.00 --
you just need one of those.  That connects to the active rj45 jack on the
wall, and to your thinnet network.  You could hook up 10 systems in your
room this way -- but you'd end up spending some sizable cash.

------

What I want to do - is to run an FTP site off the my 5 meg Amiga 2000
with 105 Meg HD. I'd *LOVE* to run Citadel 68k (my favorite)
but.. aparantly the Amiga's ethernet board dxoesn't support
our 10-base-t... What do I do!!!?? 
I dont want to spend a fortune - I mean the board is $250 and what
else is it gonna run me!??? 

Please please please please
reply here or to my address below.. thanks!!!

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jnmoyne@lbl.gov (Jean-Noel MOYNE) (05/22/91)

 No sweat dude ! It's easy ! ((-:

What you need is a TP-MAU (understand a twisted pair media access unit 
(understand a twisted pair transciever)).

What it is, is a small box that has on one side a 10base-T connector and 
on the other side the usual db15 AUI connector (understand 'Thick 
Ethernet' connector). That's what your friend calls a 10Base-T to AUI 
adaptor, it's simple plug and go, since the Amiga Ethernet card has both a 
thin and a thick connectors.

Or, you wait untill CBM offers a 10Base-T Ethernet card (should be around 
the same price as the current one).

By the way Mr Commodore, will you eventually release such a card soon ???? 
Believe me, this is important ! 10Base-T is gonna be big RSN (it's 
allready in fact).

As for the end of the message, you are not concerned, since you only want 
to connect one machine. The problem will eventually be with your roomates, 
and the number of machines per room you want to hook to the net. Hope 
you're living with, like philosopy majors ... (-:

     JNM

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