Tom,


Check out http://www.atcomservices.com/highlights/makepatch.htm "How to make
a category 5 patch cable". This includes the pin out.

-----Original Message-----
From: Tom Hula [mailto:[log in to unmask]]
Sent: Monday, May 20, 2002 2:46 PM
To: [log in to unmask]
Subject: [HP3000-L] OT: Networking Question


I have successfully (thank you Wirt) put together a simple network with a
combination of hubs and thin coax and cat 5 enhanced wiring. Most of the
network wiring (except the patch cords) I wired myself. I was looking at
making some improvements, including a switch to prepare for adding DSL.

The switch I purchased (Allied Telesyn) doesn't work. All the lights light
up, indicating a supposedly good physical connection, but nothing I have can
communicate on the switch or to an uplinked hub to the switch. When I
connected my PC to the switch, it could see itself, but no one else. The
switch says that my PC is connected at 100 MPS at full duplex (which would
be correct), while the uplinked hub is hooked up at 10 MPS and half duplex
(which would also be correct).

In talking to the technical support people at Allied Telesyn, the person I
talked to claims that I have my cables incorrectly wired ... that they will
work fine on the slower dummer speed, but not at the faster speed. Before I
redo all my connections, wondered if anyone else could speak intelligently
about this. I have my cables wired the same as the patch cables (as far as I
can tell): orange/white, orange, blue/white, blue, green/white, green,
brown/white, brown.

Meanwhile, he tells me that I should have my straight-thru cables wired:
green/white, green orange/white, blue, blue/white, orange, brown/white,
brown.

There is something funny, since I sent for a replacement switch and it
exhibits the same useless behavior. I hate to think I have it set up all
wrong, but then I have been wrong a few times.

To recap, although the wiring and PC Nics can do 100 MPS, the hubs and the
connection to the HP 3000 are keeping the actual speed to 10 MPS. So, this
switch is the first time that parts of the network are being (or could be,
at least) allowed to run at 100 MPS. If it would work. I am going to try
this other wiring scheme on my PC, but just wondered if anyone else could
shed some light. TIA

Tom Hula
Victor S. Barnes Company
616-361-7351  x173

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