[Modem] Atlanta area, losing DNS resolution randomly Page 2
Links: home · search · speed test · login · more ·
Links: Reply New Topic
Forums » AT&T » AT&T Southeast » [Modem] Atlanta area, losing DNS resolution randomly
page: 1 · 2
graysonf @ 13th Jun 08:39PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
66.21.240.205 fails to reverse lookup because there is no rDNS assignment for it. Everyone will get the same answer regardless of which DNS they are using.
reply
NetFixer @ 13th Jun 08:46PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
said by graysonf :said by NetFixer :
To begin with, the problem you describe of losing your connection for 10-20 seconds does not sound like a DNS problem.
This sounds like there is an adapter somewhere configured to obtain an IP automatically via DHCP and it is failing to obtain an IP because there is no DHCP server reachable.
Possibly, but it also sounds very much like a DSL modem doing a retrain/sync cycle.
--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.
reply
NetFixer @ 13th Jun 08:48PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
said by graysonf :
66.21.240.205 fails to reverse lookup because there is no rDNS assignment for it. Everyone will get the same answer regardless of which DNS they are using.
Upon reflection, I do not wish to post. Take me back!
--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.
reply
Airwolf7 @ 13th Jun 11:12PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
said by shivetya :
When playing WOW (yes this is why I notice it more often than not) I lose my connection to the game (but it recovers in 10 to 20 seconds)
10 to 20 seconds is very close to the 15 to 30 seconds it takes for a modem to lose sync with the DSLAM and regain sync with the DSLAM.
»AT&T Southeast Forum FAQ »I am loosing synch. How do I troubleshoot and correct the problem?
»AT&T Southeast Forum FAQ »How to check modem stats, synch rates & speeds from test jack at the NID.
»AT&T Southeast Forum FAQ »How to check modem stats, synch rates & speeds from test jack at the INI.
--
It is not possible to achieve 'equality' between things that are, fundamentally, not equal!
reply
shivetya @ 15th Jun 07:53AM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
This might sound odd, but my connectivity problem got worse Saturday, it was regularly dropping, sometimes every 10 minutes and only seconds.
Yet on Sunday, I tried something someone hinted about on another page... I put a weather site up, one that refreshes every 3 minutes or so automatically. Well, I had only a handful of disconnects on Sunday.
On Tuesday bellsout will be changing the account to 1.5/256 from (6/384) and I hope that a lower speed solves the problem until I can get comcast out to see what it takes to install their stuff.
reply
shivetya @ 15th Jun 05:58PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
Can a wireless equipped power meter have any effect on DSL?
While I have no issues with my wireless at home or my cordless phones I am curious if the power company's wireless equipped power meter can affect my connection?
reply
shivetya @ 19th Jun 06:27AM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
Just an update.
I am still getting lots of errors on the line. The tech came out and tested the line to the house and it shows good. Inside there was a dsl filter not used right. However that affected throughput only and not connection.
Here is what I am seeing. If I don't use the line it is without errors. In other words, I left my systems offline, no mail or webpages. The 15 minute interval column was clean on system statistics.
Soon as I start using the line I get errors. I get uncorrected dsl errors and many ATM header errors. I also start accumulating dsl seconds in error.
Should I expect 15 minutes to pass without any errors? Why only under load?
reply
NetFixer @ 19th Jun 12:15PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
said by shivetya :
Here is what I am seeing. If I don't use the line it is without errors. In other words, I left my systems offline, no mail or webpages. The 15 minute interval column was clean on system statistics.
Soon as I start using the line I get errors. I get uncorrected dsl errors and many ATM header errors. I also start accumulating dsl seconds in error.
Should I expect 15 minutes to pass without any errors? Why only under load?
If you are not passing any traffic, there will be no errors. There can only data errors if you are actually passing traffic over the connection. The presence of errors on a DSL connection does not necessarily indicate a problem because despite the "D" in DSL standing for "digital", the actual transmission is analog, and data corruption is unavoidable unless you have an extremely clean line. Are you still having problems that impact your use of the circuit, or are you just seeing errors in the modem stats?
Here are the brief stats from my two connections which I consider to be working normally. The errors shown are about a week's accumulation.
ADSL Line State: Up
ADSL Startup Attempts: 1
ADSL Modulation: DMT
ADSL Data Path: Fast
CO vendor: ALCB
Power Management State L0
Datapump Version: DSP 7.2.3.0, HAL 7.2.1.0
Downstream Upstream
---------- ----------
SNR Margin: 13.50 11.00 dB
Line Attenuation: 51.00 31.50 dB
Output Power: 17.60 11.88 dBm
Errored Seconds: 0 0
Loss of Signal: 0 408
Loss of Frame: 0 0
CRC Errors: 7499 3
Data Rate: 3552 384
ADSL Line State: Up
ADSL Startup Attempts: 1
ADSL Modulation: ADSL2
ADSL Data Path: Fast
CO vendor: BDCM
Power Management State L0
Datapump Version: DSP 7.2.3.0, HAL 7.2.1.0
Downstream Upstream
---------- ----------
SNR Margin: 14.50 13.50 dB
Line Attenuation: 45.30 29.40 dB
Output Power: 16.69 3.93 dBm
Errored Seconds: 2074 0
Loss of Signal: 0 8
Loss of Frame: 0 0
CRC Errors: 4777 87
Data Rate: 3547 383
--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.
reply
shivetya @ 20th Jun 09:24AM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
dumb questio, but how did you format your stats? I want to post an exact copy but it isn't coming out right?
To give an idea of my problems...
in 24 hours I have had 3000 seconds of DSL unavailable seconds...
Cell Header Errors: 150286 150286
Loss of Cell Delineation: 125214 125214
Current Noise Margin: 10.0 dB (Downstream) 10.0 dB (Upstream)
Current Attenuation: 63.0 dB (Downstream) 31.5 dB (Upstream)
Current Output Power: 19.2 dBm (Downstream) 11.9 dBm (Upstream)
I can 99% of time lose my connection by doing one thing... and from either Mac in my house.
Log into a character for World of Warcraft for the first time that session. How is that for fun?
reply
NetFixer @ 20th Jun 03:17PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
said by shivetya :
dumb questio, but how did you format your stats? I want to post an exact copy but it isn't coming out right?
I am not sure if that question is directed to me since you replied to yourself, but just in case it was to me, the answer is that I did not format the stats display at all, that is the way it is displayed when I telnet into my Netopia devices and issue the show dsl all command. I do however use the html code shown below to preserve that formatting when posted to this forum:
The horizontal line separating the sections of the stats display is done by using the html code statement <hr>.
said by shivetya :
To give an idea of my problems...
in 24 hours I have had 3000 seconds of DSL unavailable seconds...
Cell Header Errors: 150286 150286
Loss of Cell Delineation: 125214 125214
Current Noise Margin: 10.0 dB (Downstream) 10.0 dB (Upstream)
Current Attenuation: 63.0 dB (Downstream) 31.5 dB (Upstream)
Current Output Power: 19.2 dBm (Downstream) 11.9 dBm (Upstream)
I can 99% of time lose my connection by doing one thing... and from either Mac in my house.
Log into a character for World of Warcraft for the first time that session. How is that for fun?
It would appear from the above statements that you are still losing you connection rather than just seeing errors in your modem stats.
Have you ever tested at the NID to see if that helps with your problem as I previously suggested?
Have you changed your VPI/VCI setting to 8/35 instead of Auto/35 as I previously suggested? I don't have much experience with the 2wire modem, but I have seen other modems that had problems using automatic VPI/VCI settings.
As for your WoW problems, I will leave that to others to diagnose since I don't do WoW.
--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.
reply
shivetya @ 20th Jun 11:55PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
Yeah, it is 8/35.
Same results outside... Bellsouth tested the internal lines and found nothing amiss in my house.
Below is my current reading
Troubleshooting – DSL Diagnostics
General Information
DSL Line (Wire Pair): Line 1 (inner pair)
Downstream Rate Cap: 1504 kbps
Downstream Atten. at 300kHz: 63.7 dB
Uncancelled Echo: -8.0 dB Ok
VCXO Frequency Offset: -47.8 ppm Ok
Final Rx Gain: 29.9 dB Ok
Impulse Noise Comp. Tones: 0 Ok
Excessive Impulse Noise: 0 Ok
Impulse noise protection: 0.00
Delay of latency path: 0.25 ms
Training History
Downstream Upstream
Time Line Rate Max1 Max2 Max3 Mgn1 Mgn2 Attn Pwr CRCs FECs INP DLY Rate M ax Mgn Attn Pwr CRCs FECs Mode Vendor State Exit Code Echo VCXO Rx Gain INC Tones
2009/06/20 21:25:17 EDT 1 0 0 0 0 0.0 0.0 0.0 0.0 0 0 0.00 0.00 0 0 0.0 0.0 0.0 0 0 Unknown Unknown 21/16 ERR_STATE_TIMEOUT 0.0 -37.9 24.9 0
2009/06/20 21:31:52 EDT 1 1504 2328 2292 2292 9.9 -2.0 64.0 19.3 3565 0 0.00 0.25 256 324 8.0 31.5 11.9 1801 1802 G.DMT Annex A Unknown 230/105 IDLE_REQU EST -7.3 -44.0 29.9 23
2009/06/20 22:10:39 EDT 1 1504 2256 2180 2180 9.4 4.0 63.9 19.3 10660 0 0.00 0.25 256 320 8.0 31.5 11.9 2 1 G.DMT Annex A Unknown 230/105 ERR_HI_BER_LIMI T -5.6 -45.0 29.9 0
2009/06/20 23:07:30 EDT 1 1504 2116 1144 1144 8.9 3.0 64.1 19.5 10773 0 0.00 0.25 256 344 9.0 31.5 11.9 14 0 G.DMT Annex A Unknown 230/105 ERR_HI_BER_LIM IT -8.0 -43.4 29.9 1
2009/06/20 23:38:56 EDT 1 1504 1960 1484 1484 8.4 5.0 64.0 19.5 10701 0 0.00 0.25 256 348 8.0 31.5 11.9 5 0 G.DMT Annex A Unknown 230/105 ERR_HI_BER_LIMI T -7.0 -48.6 29.9 0
2009/06/20 23:45:37 EDT 1 1504 1912 360 664 8.1 1.0 63.9 19.5 10593 0 0.00 0 .25 256 344 8.0 31.5 11.9 5410 5403 G.DMT Annex A Unknown 230/105 ERR_HI_BER_ LIMIT -6.4 -48.6 29.9 1
2009/06/20 23:45:48 EDT 1 0 0 0 0 0.0 0.0 0.0 0.0 0 0 0.00 0.00 0 0 0.0 0.0 0.0 0 0 Unknown Unknown 24/18 IDLE_REQUEST 0.0 -41.6 24.9 0
2009/06/20 23:48:17 EDT 1 1504 1860 1856 1856 7.9 7.0 64.0 19.5 7 0 0.00 0.2 5 256 340 8.0 31.5 11.9 0 0 G.DMT Annex A Unknown 229/103 N/A -8.0 -47.8 2 9.9 0
Now here is what the standard page looks like when I have lost connect but the modem has not recognized it yet
DSL Connection Details
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT Annex A
Downstream Rate: 1504 kbps
Upstream Rate: 256 kbps
Channel: Fast
Current Noise Margin: -3.0 dB (Downstream) 8.0 dB (Upstream)
Current Attenuation: 63.0 dB (Downstream) 31.5 dB (Upstream)
Current Output Power: 19.5 dBm (Downstream) 11.9 dBm (Upstream)
DSLAM Vendor Information: Country: {0x00} Vendor: {00 08 00 00} Specific: {0x00}
PVC Info: 8/35
and just for fun... stats recently.
Statistics
Collected for 2:29:11
Since Reset Current 24-Hour Interval Current 15-Minute Interval Time Since Last Event
ATM Cell Header Errors: 46328 46328 10641 0:00:28
ATM Loss of Cell Delineation: 46088 46088 10630 0:08:24
DSL Link Retrains: 5 5 1 0:08:24
DSL Training Errors: 1 1 0 2:28:44
DSL Training Timeouts: 0 0 0 0:00:00
DSL Loss of Framing Failures: 0 0 0 0:00:00
DSL Loss of Signal Failures: 0 0 0 0:00:00
DSL Loss of Power Failures: 0 0 0 0:00:00
DSL Loss of Margin Failures: 179 179 130 0:08:29
DSL Cumulative Errored Seconds: 1130 1130 200 0:00:28
DSL Severely Errored Seconds: 785 785 181 0:08:24
DSL Corrected Blocks: 0 0 0 0:00:00
DSL Uncorrected Blocks: 46309 46309 10608 0:00:28
ISP Connection Establishment: 6 6 6 2:21:18
I don't think I have much choice, been at this with Bellsouth since the 5th everyday. I am going to hunt down a Motorola cable/wireless router and get Comcast out next week.
reply
shivetya @ 24th Jun 04:43PM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
I figure its toast. While my connection improved Sunday; Saturday was nearly unusable, it appears Monday it doesn't want to stay stable again.
Going to keep trying Comcast to see if they will come out and install a cable modem. I did stop using the wireless feature of the 2Wire and that seemed to help a bit.
ATM Since Reset Current 24-Hour Interval Current 15-Minute Interval Time S ince
Last Event
Cell Header Errors: 234680 35707 3 0:00:23
Loss of Cell Delineation: 186953 31961 0 0:12:21
DSL
Link Retrains: 19 3 0 0:12:21
DSL Training Errors: 4 1 0 8:53:53
Training Timeouts: 0 0 0 0:00:00
Loss of Framing Failures: 2 0 0 3 days 7:39:18
Loss of Signal Failures: 2 0 0 3 days 7:39:18
Loss of Power Failures: 0 0 0 0:00:00
Loss of Margin Failures: 399 0 0 2 days 18:40:02
Cumulative Seconds w/Errors: 33573 7259 5 0:00:02
Cumulative Sec. w/Severe Errors: 4136 552 0 0:12:21
Corrected Blocks: 0 0 0 0:00:00
Uncorrectable Blocks: 276416 42088 5 0:00:02
DSL Unavailable Seconds: 3561 612 0 0:11:57
reply
Airwolf7 @ 25th Jun 10:37AM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
said by shivetya :Yeah, it is 8/35.
Same results outside... Bellsouth tested the internal lines and found nothing amiss in my house.
Below is my current reading
Troubleshooting | DSL Diagnostics
General Information
DSL Line (Wire Pair) : Line 1 (inner pair)
Downstream Rate Cap : 1504 kbps
Downstream Atten. at 300kHz : 63.7 dB
Uncancelled Echo : -8.0 dB Ok
VCXO Frequency Offset : -47.8 ppm Ok
Final Rx Gain : 29.9 dB Ok
Impulse Noise Comp. Tones : 0 Ok
Excessive Impulse Noise : 0 Ok
Impulse noise protection : 0.00
Delay of latency path : 0.25 ms
Training History
Downstream Upstream
........................................................... ............... ......................................
Time Line Rate Max1 Max2 Max3 Mgn1 Mgn2 Attn Pwr CRCs FE Cs INP DLY Rate Max Mgn Attn Pwr CRCs FECs Mode Vendor State Exit Code Echo VCXO Rx Gain INC Tones
2009/06/20 21:25:17 EDT 1 0 0 0 0 0.0 0.0 0.0 0.0 0 0 0.00 0.00 0 0 0.0 0.0 0.0 0 0 Unknown Unknown 21/16 ERR_STATE_TIMEOUT 0.0 -37.9 24.9 0
2009/06/20 21:31:52 EDT 1 1504 2328 2292 2292 9.9 -2.0 64.0 19.3 3565 0 0.00 0.25 256 324 8.0 31.5 11.9 1801 1802 G.DMT Annex A Unknown 230/105 IDLE_REQU EST -7.3 -44.0 29.9 23
2009/06/20 22:10:39 EDT 1 1504 2256 2180 2180 9.4 4.0 63.9 19.3 10660 0 0.00 0.25 256 320 8.0 31.5 11.9 2 1 G.DMT Annex A Unknown 230/105 ERR_HI_BER_LIMI T -5.6 -45.0 29.9 0
2009/06/20 23:07:30 EDT 1 1504 2116 1144 1144 8.9 3.0 64.1 19.5 10773 0 0.00 0.25 256 344 9.0 31.5 11.9 14 0 G.DMT Annex A Unknown 230/105 ERR_HI_BER_LIM IT -8.0 -43.4 29.9 1
2009/06/20 23:38:56 EDT 1 1504 1960 1484 1484 8.4 5.0 64.0 19.5 10701 0 0.00 0.25 256 348 8.0 31.5 11.9 5 0 G.DMT Annex A Unknown 230/105 ERR_HI_BER_LIMI T -7.0 -48.6 29.9 0
2009/06/20 23:45:37 EDT 1 1504 1912 360 664 8.1 1.0 63.9 19.5 10593 0 0.00 0.25 256 344 8.0 31.5 11.9 5410 5403 G.DMT Annex A Unknown 230/105 ERR_HI_BER_ LIMIT -6.4 -48.6 29.9 1
2009/06/20 23:45:48 EDT 1 0 0 0 0 0.0 0.0 0.0 0.0 0 0 0.00 0.00 0 0 0.0 0.0 0.0 0 0 Unknown Unknown 24/18 IDLE_REQUEST 0.0 -41.6 24.9 0
2009/06/20 23:48:17 EDT 1 1504 1860 1856 1856 7.9 7.0 64.0 19.5 7 0 0.00 0.25 256 340 8.0 31.5 11.9 0 0 G.DMT Annex A Unknown 229/103 N/A -8.0 -47.8 29.9 0
Now here is what the standard page looks like when I have lost connect but the modem has not recognized it yet
DSL Connection Details
DSL Line (Wire Pair) : Line 1 (inner pair)
Protocol : G.DMT Annex A
Downstream Rate : 1504 kbps
Upstream Rate : 256 kbps
Channel : Fast
Current Noise Margin : -3.0 dB (Downstream) 8.0 dB (Upstream)
Current Attenuation : 63.0 dB (Downstream) 31.5 dB (Upstream)
Current Output Power : 19.5 dBm (Downstream) 11.9 dBm (Upstream)
DSLAM Vendor Information : Country: {0x00} Vendor: {00 08 00 00} Specific: {0x00}
PVC Info : 8/35
and just for fun... stats recently.
Statistics
Collected for 2:29:11
Since Reset Current 24-Hour Interval Current 15-M inute Interval Time Since Last Event
ATM Cell Header Errors : 46328 46328 10641 0:00:28
ATM Loss of Cell Delineation : 46088 46088 10630 0:08:24
DSL Link Retrains : 5 5 1 0:08:24
DSL Training Errors : 1 1 0 2:28:44
DSL Training Timeouts : 0 0 0 0:00:00
DSL Loss of Framing Failures : 0 0 0 0:00:00
DSL Loss of Signal Failures : 0 0 0 0:00:00
DSL Loss of Power Failures : 0 0 0 0:00:00
DSL Loss of Margin Failures : 179 179 130 0:08:29
DSL Cumulative Errored Seconds : 1130 1130 200 0:00:28
DSL Severely Errored Seconds : 785 785 181 0:08:24
DSL Corrected Blocks : 0 0 0 0:00:00
DSL Uncorrected Blocks : 46309 46309 10608 0:00:28
ISP Connection Establishment : 6 6 6 2:21:18
I don't think I have much choice, been at this with Bellsouth since the 5th everyday. I am going to hunt down a Motorola cable/wireless router and get Comcast out next week.
reply
Airwolf7 @ 25th Jun 10:38AM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
said by shivetya :I figure its toast. While my connection improved Sunday; Saturday was nearly unusable, it appears Monday it doesn't want to stay stable again.
Going to keep trying Comcast to see if they will come out and install a cable modem. I did stop using the wireless feature of the 2Wire and that seemed to help a bit.
ATM Since Reset Current 24-Hour Interval Curren t 15-Minute Interval Time Since Last Event
Cell Header Errors : 234680 35707 3 0:00:23
Loss of Cell Delineation : 186953 31961 0 0:12:21
DSL
Link Retrains : 19 3 0 0:12:21
DSL Training Errors : 4 1 0 8:53:53
Training Timeouts : 0 0 0 0:00:00
Loss of Framing Failures : 2 0 0 3 days 7:39:18
Loss of Signal Failures : 2 0 0 3 days 7:39:18
Loss of Power Failures : 0 0 0 0:00:00
Loss of Margin Failures : 399 0 0 2 days 18:40:02
Cumulative Seconds w/Errors : 33573 7259 5 0:00:02
Cumulative Sec. w/Severe Errors : 4136 552 0 0:12:21
Corrected Blocks : 0 0 0 0:00:00
Uncorrectable Blocks : 276416 42088 5 0:00:02
DSL Unavailable Seconds : 3561 612 0 0:11:57
reply
Airwolf7 @ 25th Jun 11:03AM:
Re: [Modem] Atlanta area, losing DNS resolution randomly
I took all the stats that you posted and formatted them so they are readable.
reply
Airwolf7 @ 25th Jun 12:06PM:
You not having DNS problems. Your modem is losing sync.
said by shivetya :
Same results outside... Bellsouth tested the internal lines and found nothing amiss in my house.
Did you connect the 2Wire modem directly to the "Test Jack" located inside of the NID to check things out?
If you did not are you just going to take their word for it when you can test things for yourself?
»AT&T Southeast Forum FAQ »I am loosing synch. How do I troubleshoot and correct the problem?
»AT&T Southeast Forum FAQ »How do I isolate my house wiring from the Telco wiring?
»AT&T Southeast Forum FAQ »How to check modem stats, synch rates & speeds from test jack at the NID.
reply
shivetya @ 26th Jun 03:06PM:
Re: You not having DNS problems. Your modem is losing sync.
Thank you for the formatting... I need to learn to do it better.
Yeah, I was outside with the tech who came out. We also tested inside and had the same results. He did a rip/replace of the stuff in the box across the street but figured that the problem is most likely at the dslam down the street.
My connection is horrid still. Telephone support is a big no go. Hence I am converting to Comcast on the 3rd of July for both phone and voice. I don't have a real choice here. Bellsouth has proven they cannot or will not fix it. I can't even get refunds!
It dies when I first use it each day and then after 30 seconds or so it recovers and randomly drops.
I appreciate all the help I have received. It helped me realize the best solution is to switch providers. When I found out my three nearest neighbors were not on Bellsouth because of issues it sealed the deal.
reply
Thank you for using lo-fi dslreports.com - report bugs
© 99-2009 silver matrix LLC