Re: Strange Network Problem



"w_tom" wrote:

So many reasons for your symptoms. Your posts are so vague as to
what you did and did not do and change. Therefore it is difficult to
almost impossible to provide a useful answer.

For example, some cables can be wired backwards. Some ethernet
interfaces will compensate accordingly. Others will not. You don't
even list how each connection was made - 10 Mhz or 100 Mhz. You did
not execute ethernet card diagnostics that echo data between two points
- so that a ballpark signal to noise estimate is provided. Some
computer and router ports will work at 10 Mhz but not at 100 Mhz. This
due to transient damage in the router, or even due to cable miswired -
the proper wire pairs not twisted together.

For example, computer connects directly to router and works OK.
Using that same ten foot ethernet cable, then does computer connect to
router via the 'inside wall' cable to the exact same router port?
Notice how details are posted to get a useful response here. You post
a test. Then make only one change - add the 'cable inside wall' to the
test circuit, and then test to the exact same router port. If you
don't do that, they you massively confuse and drive away useful
responders.

You provide no clear indication that WiFi was disabled. In fact,
some of your messages imply a WiFi connection is being made which you
are confusing with ethernet. Does Network Connections specifically say
'Disabled' or only say 'Disconnected'. You must literally state so
with the exact word quoted from Network Connections.

As you can see, above demonstrates even why your laptop would work
where other computers would not; with maybe four different reasons.
Using information provided, one cannot even begin to guess which one
would explain it. "They connected right up" is insufficient. At
what speed did they connect right up? Using what cables (best that
each cable has a label such as AA, BB, CC, DD, EE, etc and posted as to
which cable was used)? Yes it gets that anal if you really want a
final solution.

Dave A wrote:
The laptop is connecting through the ethernet. I did not connect to the
wireless.

The 2 desktops run XP home and the laptop runs on XP Professional. All have
SP2.

I have tried 2 compltely different routers with the same results. You are
correct that the computers are in 2 different rooms and the laptop is used in
other locations either wired or wireless.

We have had some thunderstorms but no power problems. Neither room have a
UPS just on good surge protection.

I have tried both desktops in each of the other rooms with the same results.
They will not connect. I took the computers to a friends house and they
connect right up?

Everything I see points to the wiring, but I can't explain why the laptop
will connect with the same wiring.

Tom,

Maybe instead of telling all the things I did wrong, you could ask for more
information. If I knew all the information you needed, I probably would not
be asking for help.

The WiFi used to say disabled but I took that out of the picture by using a
different 8 port router (no wireless). same results.

If I set the computers up in the room where the cable modem and router are,
I have no problems what so ever. All computers work and all connect at 100
mps. When I take them back to the individual rooms, I get the limited or no
connection. I do however get a conection with the lapptop. The connection
there is also 100 mps.

I can also say that I have tried all port on the router and the results are
the same.

My next step is to test the wiring on the lines. I have had a close friend
loan me a line tester and I will test in the next say or so. (I am out of
town right now).

Any other suggestions.

Thanks
Dave

.

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