[PLUG] Resnet (ADSL) problems

[Fred Davis]

If things are really that bad (20 disruptions / hour) you should talk to
Brent Edwards at PUCC (wbe@purdue.edu). He was very helpful in taking care
of my ADSL problems.

-fred

On Tue, 7 Sep 1999 he@expert.cc.purdue.edu wrote:

> 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
> > > 
> > > 
> > > 
> > > ____________________________________________________
> > > The Purdue Linux Users' Group (PLUG) mailing list.
> > > plug mailing list  -  plug@csociety.purdue.edu
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> > > 
> > 
> > 
> > 
> 
>