This is a discussion on Duplex mismatch - can the type of cable cause this? within the Linux Networking forums, part of the Linux Forums category; A speed test done on a server described as "Web100 based Network Diagnostic Tool (NDT)" reports that there ...
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A speed test done on a server described as "Web100 based Network
Diagnostic Tool (NDT)" reports that there is a duplex mismatch. The NIC is an Intel Pro 100/VE and the switch is a Dell Powerconnect 2024 so it does not appear that either device is problematic. Therefore, I wonder if the cable could be the Bad Guy here? For example, if there is a straight through cable between some of the computers connected to the Dell but a crossover cable on this particular computer, could that cause a duplex mismatch? --buck |
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buck wrote:
> A speed test done on a server described as "Web100 based Network > Diagnostic Tool (NDT)" reports that there is a duplex mismatch. > > The NIC is an Intel Pro 100/VE and the switch is a Dell Powerconnect > 2024 so it does not appear that either device is problematic. > > Therefore, I wonder if the cable could be the Bad Guy here? For > example, if there is a straight through cable between some of the > computers connected to the Dell but a crossover cable on this > particular computer, could that cause a duplex mismatch? > --buck > It's not likely the cable. I almost always have to force ports between Cisco switches and anything other than Cisco switches to 100-full at both ends. I don't know who manufactures the specific switch for Dell, but auto-negotiation issues are common. Force both sides to 100-full and be done with it. ....kurt |