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Hardware and Software > Networking > "A network cable is unplugged"
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Aug 20th, 2009
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"A network cable is unplugged"

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e q u i p m e n t
  • Netgear DG834G v2 wireless aDSL modem/router (ports 1 through 4, plus wireless function)
  • Sony VAIO desktop 1 – connected to router w/ CAT5 cable
    The Network Connections icon in the System Tray shows a red X. MouseOver message says, "Network Bridge -- A network cable is unplugged".
  • Sony VAIO desktop 2 – connected to router w/ CAT5 cable
    Connects to the network and internet without issues.
  • Sony VAIO notebook PCG-7L1L – wireless connection to router
    Connects to the network and internet without issues.
All seemed to work fine (for months) until just this morning. Desktop 2 will network without problem connected to any of the four router ports, and using either of two new network cables.

I have disconnected power from the router/modem and turned off the two hard-wired desktop PCs. After a two minute wait, I've powered ON the router/modem, then turned ON the PCs. Desktop 2 is the only unit to properly connect to the network. The NIC is on the motherboard for both desktop units.

Start > Run > Cmd > ipconfig returns no information for the problem desktop PC.

Constructive troubleshooting ideas would be greatly appreciated. =)
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rhinosneros is offline Offline
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since Aug 2009
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Aug 20th, 2009
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Re: "A network cable is unplugged"

Start > Run > Cmd > ipconfig returns no information for the problem desktop PC.
and what is this info it returns also include info for other computers that are working
Thanks
Dock
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Junior Poster in Training
Docktor D is offline Offline
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since Jan 2008
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Aug 21st, 2009
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Re: "A network cable is unplugged"

Desktop 1 PC and the notebook each return a set of values/addresses for
IP Address
Subnet Mask
Default Gateway
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rhinosneros is offline Offline
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Aug 21st, 2009
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Re: "A network cable is unplugged"

All three computers are running Windows XP Professional, by the way.
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rhinosneros is offline Offline
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Aug 21st, 2009
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Re: "A network cable is unplugged"

SONY Desktop 1 -- what is the purpose of the network bridge? Is it supposed to be there? I am no networking expert...but in cases like yours, the bridge appears (sometimes by accident). If you delete the bridge, the problem could go away. At least, in my experience, that has helped in the few cases I have tried it. But then again, I don't know your network setup.
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Dukane is offline Offline
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since Oct 2006
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Aug 24th, 2009
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Re: "A network cable is unplugged"

Deleting the Network Bridge, then rebooting solve this issue. Thanks for all the constructive input ... in particular, many thanks to Dukane. Your rep = rep+1
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rhinosneros is offline Offline
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Aug 26th, 2009
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Re: "A network cable is unplugged"

Your very welcome...I don't know what it is about those bridges, but they pop up from time to time and leave people wondering what the heck happened!
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Dukane is offline Offline
282 posts
since Oct 2006

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