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p9ing

join:2002-08-27
Champaign, IL

reply to Mountaineer1

Re: Cannot connect during mornings

I picked up a 4100b, and am still unable to connect. I have tried swapping cables, filters, ethernet cards (computers), and modem. Best as I can get with the 4100b is the power, ethernet, and DSL lights lit steady green. The activity light flashes on once every 15 seconds or so with one computer, and will flash maybe three times every 15 seconds or so with the other computer. Normally PPPoE is run on the computer. The pppd log says "Timeout waiting for PADS packets". (I'll do a search on PADS next.)

The 4100b's diagnostic pages report the following: 3008 kbps down / 512 kbps up, software 1.0.0.63, SN margin 26.0dB, line attenuation 13.0dB. The modem came configured for hosting PPPoE itself, and in that case all four PPPoE test items were reported failed. I then changed the configuration to having PPP hosted on the computer, and it didn't fix things.


Mountaineer1
Big WVU Fan
Premium,MVM
join:2002-01-12
Universe
kudos:2
Reviews:
·AT&T Yahoo

So you are getting a PPPoE authentication failure? Your SN Margin and Line Attenuation look fine. I had a similar problem a few months ago,it turned out to be a bad card in the RT that serves my area. My neighbor also had the same issue. After they(at&t)replaced the card,the problem went away.
--
Got a Clark,Crown,Drexel forklift and need technical advice? Ask me about it.


p9ing

join:2002-08-27
Champaign, IL

I don't recall authentication failure being in the error messages. The messages had to do with PADS and other usual diagnostics. (I'm not in front of the log right now.)

Thanks for mentioning their hardware being a possible factor. I'll try to look into increasing timeout values on my end, and if that doesn't help, I'll post AT&TDirect.



Mountaineer1
Big WVU Fan
Premium,MVM
join:2002-01-12
Universe
kudos:2
Reviews:
·AT&T Yahoo

Try the Speedstream modem spectrum analysis tool that pflog See Profile created,and post your results.
--
Got a Clark,Crown,Drexel forklift and need technical advice? Ask me about it.


p9ing

join:2002-08-27
Champaign, IL

Click for full size
dmt_spectrum
Attached is the spectrum analysis for PPP hosted on the modem. (If PPP is hosted on the computer, there never is any internet activity.) According to the modem web pages, authentication with the PPP server fails and "the far end did not respond to PPPoE requests". PPPoE server connectivity passed however.

deblin's tool results:
Downstream Maxrate (Estimated): 8420
Upstream Maxrate (Estimated): 972

Bit tones with notches/missing bits:

bit(s) 38:45 163.875 - 198.375 KHz
bit(s) 77:85 332.0625- 370.875 KHz
bit(s) 88:96 379.5 - 418.3125KHz
bit(s) 129:131 556.3125- 569.25KHz
bit(s) 147 633.9375- 638.25KHz

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