We have a really wierd issue going on at a client location that involves a DSL connection that has pretty much boggled our minds here. Here is a recap:
Our original DSL line was having issues where it would drop connection - not entirely, as the lights would still be on, but there would be a sort of freeze on the line where no web pages could be pulled or the server connected to from across the net. A quick reset of the modem or waiting 5-7 mins would fix this.
We thought that it could have been viruses, trojans, or some poorly capped lines, or even licensing issues on our 2003 server, but all those areas were tackled and we still had the issue. After much haggling with ATT, they came out and installed one brand new line for DSL use only. This line DOES NOT have any phones or fax connected to it - it is strictly for internet usage.
They gave us a new modem to use, along with a new PPPoE logon name and pass, but we kept the old modem in use (same models both old and new) due to some firewall settings we couldnt change on the new one. Nonetheless, the new line still experiences this drop! There is a neighboring office in the complex that has DSL from ATT but it works just fine.
We have narrowed this connection drop to an ATT issue as nothing inside the network is having issues. Connections to the server within the LAN stays up and running when the modem signal goes down. Just so you know, this location uses a static IP for their DSL. THe modem used is the newest one from ATT, the 2WIRE 4 port wireless gateway, the HG series. This office is on their THIRD Modem already, so we highly doubt its a bad modem we are dealing with.
We are at a point where suggesting Comcast cable internet is the only solution, as anything mixing internet and phone lines at this office is becoming taboo. Can anyone recommend any other areas to check before we call it quits on this 2 month ordeal with ATT DSL?
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that does not really mean anything you see. Adsl line length is usually not a straight line between you and your le on the other hand your neighbour could have a straighter line of sight to the le so his could be say 3.5km and yours could be 5.2km by going round the houses a bit. Does your router say how far as mine does in the adsl status
Also post here your adsl status as these could point to the problem
SNR (Signal-to-Noise-Ratio) margin 14.3 22.0 dB
Line attenuation 27.1 17.5 dB
Errored seconds 1157 206
Loss of signal 2 2
Loss of frame 0 0
CRC errors 39 97
Data rate 8064 576 kbps
DSLAM (2 km) TEXAS INSTRUMENTS
This is mine
the major things are SNR and line attenuation
Since posting this issue, the DSL has been pretty solid. However, after viewing the modem log below we are a little worried. Could some post and tell us if this log looks normal? It shows the modem's detailed activity for the last week.
http://xs217.xs.to/xs217/0
Any help is appreciated. The users at this office have experienced two brief DSL outages since we last spoke a week ago.
Modem log from today after internet supposedly dropped again:
http://xs117.xs.to/xs117/0
3rd modem log:
http://xs217.xs.to/xs217/0
More usefull statistics are of the form:
DSL Statistics:
Type : ALC MULTI-MODE CP
Datapump HW Rev : ff
Datapump FW Rev : 3.9.16
Datapump Vendor ID : ffff
Current Status : LINK UP
Operating Mode : G.DMT
Data Path : Fast
Downstream Upstream
Current Rate : 3008 Kbps 512 Kbps
Maximum Rate : 8594 Kbps 948 Kbps
Noise Margin : 18.0 dB 16.0 dB
Attenuation : 23.0 dB 18.0 dB
Out Power : 13.0 dB 8.5 dB
For general monitoring try pingplotter. Configure tracing to a dns server or other frequently accessed site.
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by: IanThPosted on 2007-06-15 at 03:23:51ID: 19290462
how long from your local exchange are you?
Do you know if your neighboring office is on the same exchange?