On Sun, 21 Jan 2001 19:30:30 -0800, you wrote:

Try making sure the NIC that is connected to the cable modem is
configured for NON full duplex operation.

Chances are the cable modem port is 1/2 duplex and if this is the case
connecting a full duplex card to it will cause excessive collisions
and retries.

I did have problems with an "auto" speed card deciding that the cable
modem was 100meg capable (which it wasnt) and sometimes it wouldnt
establish at all untill I forced the cards configuration to 10meg.

>> I have noticed something interesting - and I have been following this 
>> for a while to make sure it was statistically valid:
>> 
>> If I connect my computer directly to my cable modem, and then run the 
>> speed tests at www.dslreports.com/stest, I get one set of readings.
>> 
>> If I connect through the STN box, (this computer is the only one on the 
>> net, etc.) and re-run the same tests - I get about a 1/3 drop in line 
>> rate.  (i.e. high 300's with the direct connection, this drops to mid 
>> 200's via STN.)
>> 
>> Is there some setting in STN that I can "tweek" to help prevent this 
>> loss of line speed?
>> 
>> System Info:
>> 
>> The cable modem is a Motorola SurfBoard, 100/10
>> The computer has a 100/10 3Com 390x card
>> The STN box is a 486DX with two 10Mb NIC's in it, 32 megs ram, 40 mhz 
>> buss with a p24 overdrive chip running at 150 MHz.
>> 
>> I do not think that the 10 vs 100 Mb should be such a big issue with 
>> line rates less than 1Mb.  I suspect that there is some "tweak" 
>> somewhere that will speed this right up.
>> 
>> Jim
>> 
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Rgds,
Bob

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