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Slow Ethernet

Slow Ethernet

Slow Ethernet

(OP)
This may be off topic but I thought I'd start here...  

I have a computer (iMac G5) with a 100-T port.  When I plug it into a 100-T router my download speed drops to 0.05 Mbps.  By plugging it into a 10-T switch I can increase the download speed to over 5 Mbps like the rest of the computers on the network.  It appears operating at 100-T causes too many retries.  

I have isolated it down to the computer (not the cabling between the computer and the router).  

Do you think this is a bad transceiver IC or did something get misconfigured?  I haven't seen any info on this on the Apple site.  
 

RE: Slow Ethernet

Try a diff cable since that is easy to do.  Use the shortest one you can find as that could give a qualitative answer to the flaky hardware question.

Keith Cress
kcress - http://www.flaminsystems.com

RE: Slow Ethernet

(OP)
I tried that already and no luck.  I expect the RJ45 connector is mounted to the motherboard inside the computer so I may be stuck with motherboard replacement.   

RE: Slow Ethernet

Make sure that the duplex settings are compatible.  The last place I worked at had a problem where if the duplex and speed were set to auto on one PC it would slow the entire chain down.  They had a bit todo about going around and checking everyone's computer to make sure they were set correctly (forced 100mbit and full duplex).

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