Computer Hardware Network cable is unplugged

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Subject Author Date
Network cable is unplugged Michael C 05-09-08
Posted by Michael C on May 9, 2008, 8:45 am
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I had my house wired up with ethernet ports in each room (yes I am a
nerd:-). I keep getting a message on my PC saying "a network cable is
unplugged". The message stays for a few seconds and then disappears. Network
during this time is interupted but resume ok after the message goes away.
I've confirmed it's not the network card in my PC and it's not the switch.
Assuming it's the wiring in the wall, what would be causing that?

Thanks,
Michael



Posted by tpow on May 9, 2008, 8:54 am
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>I had my house wired up with ethernet ports in each room (yes I am a
>nerd:-). I keep getting a message on my PC saying "a network cable is
>unplugged". The message stays for a few seconds and then disappears.
>Network during this time is interupted but resume ok after the message goes
>away. I've confirmed it's not the network card in my PC and it's not the
>switch. Assuming it's the wiring in the wall, what would be causing that?
>
> Thanks,
> Michael
>

rats/mice........



Posted by Calab on May 9, 2008, 10:10 am
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> I had my house wired up with ethernet ports in each room (yes I am a nerd:-).
> I keep getting a message on my PC saying "a network cable is unplugged". The
> message stays for a few seconds and then disappears. Network during this time
> is interupted but resume ok after the message goes away. I've confirmed it's
> not the network card in my PC and it's not the switch. Assuming it's the
> wiring in the wall, what would be causing that?

What NIC is in your PC?

I have the same problem with the Marvell gigabit port on my DFI
mainboard. The nVidia gigabit port on the mainboard works fine with the
same cabling. I expect a driver issue, but haven't really put a lot of
effort into fixing it.

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Posted by Michael C on May 9, 2008, 10:48 am
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> What NIC is in your PC?

It's a dlink GFE-530TX gigabit PCI card. The card isn't the problem (I
presume) as I had the same issue with my other card which was a Zyxel
gigabit card. I actually suspect now it's not the cabling in the wall as I
hooked up a cable direct to the router and I still got the same problem. I
suspect it might be the dlink router. Did I mention how much I hate Dlink
junk?


> I have the same problem with the Marvell gigabit port on my DFI mainboard.
> The nVidia gigabit port on the mainboard works fine with the same cabling.
> I expect a driver issue, but haven't really put a lot of effort into
> fixing it.

I've tried running the card into a 10/100 switch also and had the same
problem, althought I'm going to confirm that again (it might take a day to
confirm). I guess it's a matter of problem solving until I find the cause.

Michael



Posted by John McGaw on May 9, 2008, 11:28 am
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Michael C wrote:
> I had my house wired up with ethernet ports in each room (yes I am a
> nerd:-). I keep getting a message on my PC saying "a network cable is
> unplugged". The message stays for a few seconds and then disappears. Network
> during this time is interupted but resume ok after the message goes away.
> I've confirmed it's not the network card in my PC and it's not the switch.
> Assuming it's the wiring in the wall, what would be causing that?
>
> Thanks,
> Michael
>
>

When you get the message is the computer always connected to the same wall
plate with the same cable? Swap cables and try again. Move the computer to
a different wall plate in a different room. Connect a different computer to
the original wall plate. Swap router/switch/hub ports around and see if the
problem moves.

Personally, I've installed Ethernet outlets all over my house too and wired
them to a patch panel in a closet in the basement with my DSL modem,
router, switch, and file server. The one problem I've had that seems
similar to yours was caused by my own clumsiness in preparing one wall
plate connection which caused a wire to break internally which caused
intermittent problems. Because the outlet was behind my home theater stand
finding the problem and fixing it took a long time and required nearly
standing on my head.

--
John McGaw
[Knoxville, TN, USA]
http://johnmcgaw.com

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