[PLUG] Resnet (ADSL) problems

[he@expert.cc.purdue.edu]

Fred:
	Thanks for your answer. 

> I've had much trouble w/ the ADSL resnet connection in the past

	So basically, my problem is: it's OK in the quality of
bandwidth (say, 1M bps downlink bandwidth is enough for downloading
files), but it's not OK in the quality of delay in real-time
interactive applications, as for Telnet, the delay variance is 
large sometimes which make the Telnet session blocks a short while
here and there, very annoying:(

> I'm not sure what you mean by the synchronization light
> If you are talking about the third light from the left, that is the Loop
> Status light.

	Yes, I mean the 3rd light from left in 1M modem. It seems
the light often turns to yellow in the evening. But now, after midnight,
it looks better.

> - If it's orange, that means that the network
> equipment on the otherside of the line (that is the in the
> Telecommunications office) is in the process of sync'ing w/ your modem 
> (For me this happens like 20 times a day for ~ 5 seconds - (BTW, used to
> be a lot worse, but PUCC/telco got things working smoother over the
> summer))

	Really? The "Loop-back" light turns to orange nearly 20 times
an hour in the worst case I met :( 

	Originally, I suspected that my 10M/100M CNet 120Pro ethernet
card couldnt auto-sense the media speed correctly, some guys also
posted in early articles to say  "use ifconfig to manully configure
the rate of ethernet card to 10Mbps".  I'm not sure whether the 10M
ethernet card can synchronize with 1M/128K modem smoothly in theory.


Kevin


> hope this helps
> 
> Also, see: http://www.purdue.edu/PUCC/resnet/RNGuide.html; for general info
> 
> - fred
> 
> On Mon, 6 Sep 1999 he@expert.cc.purdue.edu wrote:
> 
> > 	Hi, I'm using linux over the resnet (ADSL)
> > recently. Often suffered from the delay problem
> > when doing telnet (say, the connection often block
> > a short while when you try to type something in
> > the telnet window and you can see the "synchronization light"
> > of the 1Meg modem turns to yellow the meanwhile which 
> > means ethernet card not synchronized with modem at that
> > time. I'm wondering whether this is a physical layor 
> > problem of the ADSL connection or software layor (like
> > the tulip driver of LINUX) problem,  does anyone have
> > such expereience before?
> > 	Thanks a lot.
> > 
> > 
> > Kevin
> > 
> > 
> > 
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> 
>