Network connection only stable @ 10mbit.
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Posted by on January 28, 2005, 2:09 pm
Please log in for more thread options what machine we hook up to it, and no matter what speeds the LAN card is capable of or how it is configured, we can only get a stable network connection when it is plugged into a 10mbit hub (and the workstation normally there is capable of Gigabit speeds). The wiring in the walls between this users office and the server room is Cat5 UTP and we've used our (new to us, so we're still somewhat getting used to it) AEMC Wire Mapper Pro to verify that the wiring and patch cables at each end test out OK. Does anyone have any clue how I can test further. Is it possible that our Wire Mapper might be fibbing to us? This is the Presidents office, so I need to come up with something better than shrugging my shoulders. TIA! | |||||||||||||||||||||||||
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Posted by Perkowski on January 28, 2005, 6:19 pm
Please log in for more thread options Did you check duplex setttings?? If thats ok, Id repull a new cable. What category of copper is that computer connnecting to? Joe Perkowski >
> The wiring in the walls between this users office and the server room > is Cat5 UTP and we've used our (new to us, so we're still somewhat > getting used to it) AEMC Wire Mapper Pro to verify that the wiring and > patch cables at each end test out OK. > > Does anyone have any clue how I can test further. Is it possible that > our Wire Mapper might be fibbing to us? This is the Presidents office, > so I need to come up with something better than shrugging my shoulders. > TIA! > | |||||||||||||||||||||||||
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Posted by James Knott on January 28, 2005, 7:34 pm
Please log in for more thread options mwalsh@smad.com wrote:
> Have an interesting issue with one of my LAN connections. No matter
> what machine we hook up to it, and no matter what speeds the LAN card > is capable of or how it is configured, we can only get a stable network > connection when it is plugged into a 10mbit hub (and the workstation > normally there is capable of Gigabit speeds). > You've likely got a bad connection or misswired cable. | |||||||||||||||||||||||||
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Posted by Robert Redelmeier on January 28, 2005, 11:27 pm
Please log in for more thread options mwalsh@smad.com wrote:
> The wiring in the walls between this users office and the server
> room is Cat5 UTP and we've used our (new to us, so we're still > somewhat getting used to it) AEMC Wire Mapper Pro to verify > that the wiring and patch cables at each end test out OK. I'm not familiar with the AEMC but this sure sounds like a case of a split pair. What jacks are you using at each end? Which color code, T-568A or -B? Who made the patch-cords? You could swap them out for known-good. -- Robert | |||||||||||||||||||||||||
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Posted by jtodd5 dot 1 on January 28, 2005, 7:09 pm
Please log in for more thread options Robert Redelmeier wrote:
> mwalsh@smad.com wrote:
> >>The wiring in the walls between this users office and the server
>>room is Cat5 UTP and we've used our (new to us, so we're still >>somewhat getting used to it) AEMC Wire Mapper Pro to verify >>that the wiring and patch cables at each end test out OK. >
I would agree with Robert, it could be something like a split pair. When
> > I'm not familiar with the AEMC but this sure sounds like a > case of a split pair. What jacks are you using at each end? > Which color code, T-568A or -B? Who made the patch-cords? > You could swap them out for known-good. > > -- Robert > using a tester that tells where it is in the negotiating a link proccess, split pairs will usually fail and auto-negotiate, or will show a link light, but not actually get a connetion (as in not getting an IP when using DHCP). Also, if its Cat5, you could have some low end connectors/cable along with bad install which would cause this as well. Can you make out a brand on the connectors/patch panel and cable? How does the termination look? Is the jacket stripped way back, or is it close to the jack? | |||||||||||||||||||||||||
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> what machine we hook up to it, and no matter what speeds the LAN card
> is capable of or how it is configured, we can only get a stable network
> connection when it is plugged into a 10mbit hub (and the workstation
> normally there is capable of Gigabit speeds).