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Vigor 120 drops BT connection every other minute

  • nahshon
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11 Nov 2013 11:00 #78189 by nahshon
Vigor 120 drops BT connection every other minute was created by nahshon
We have two different draytek Vigor 120s set up at two different sites with BT.

The Vigor 2955 is set up for alerts and for the past 3 years this is has been the case (see alerts below) . . .
Thankfully Virgin is stable in the area so not much need for the back up WAN2 but I have been stung a few times when Virgin did go down.
Last time I replaced the Vigor 120 with the BT Home Hub and the connection was stable.

The second site is connected to a vigor 2960 and the problem is identical.
Called BT for possible Username and password changes for broadband and set up the Vigor 120v2 on the phone with draytek.

Unfortunately not much of a difference.
I have thousands of emails like this, any thoughts appreciated:

Code:
2013/11/11 06:05:58 -- WAN 2 is down. 2013/11/11 06:06:52 -- WAN 2 is UP. 2013/11/11 06:07:22 -- WAN 2 is down. 2013/11/11 06:07:49 -- WAN 2 is UP. 2013/11/11 06:08:24 -- WAN 2 is down. 2013/11/11 06:08:51 -- WAN 2 is UP. 2013/11/11 06:09:10 -- WAN 2 is down. 2013/11/11 06:09:45 -- WAN 2 is UP. 2013/11/11 06:10:07 -- WAN 2 is down. 2013/11/11 06:12:46 -- WAN 2 is UP. 2013/11/11 06:14:39 -- WAN 2 is down. 2012/12/19 13:20:19 -- WAN 2 is down. 2012/12/19 13:21:21 -- WAN 2 is UP. 2012/12/19 13:21:40 -- WAN 2 is down. 2012/12/19 13:22:40 -- WAN 2 is UP. 2012/12/19 13:23:03 -- WAN 2 is down. 2012/12/19 13:24:16 -- WAN 2 is UP. 2012/12/19 13:24:58 -- WAN 2 is down. 2012/12/19 13:25:54 -- WAN 2 is UP. 2012/12/19 13:26:25 -- WAN 2 is down. 2012/12/19 13:28:16 -- WAN 2 is UP. 2012/12/19 13:29:04 -- WAN 2 is down.

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11 Nov 2013 12:27 #78192 by sicon
Replied by sicon on topic Re: Vigor 120 drops BT connection every other minute
Does the PPPoe have a name against it?
Try removing that and see if there is a difference

Also what is the SNR on the line - From experience I have found the 120s can be very flaky at times especially if the SNR is low.
I usually resolved the issue by replacing the 120 with an old Netgear DG834 :cry: in modem only mode - For some reason they can hang on to the ADSL signal right down to 0 db.

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13 Nov 2013 16:22 #78232 by nahshon
Replied by nahshon on topic Re: Vigor 120 drops BT connection every other minute
I pulled this off a BT Voyager modem (not sure how to make it pass through to bridged mode)
Will try the netgear (just found an old one thanks)

Code:
Line Mode ADSL2+  Line State Show Time   Line Power State L0  Line Up Time 00:00:05:53  Line Coding Trellis On  Line Up Count 1  Statistics Downstream Upstream Line Rate 12148 Kbps 1135 Kbps Attainable Line Rate 14372 Kbps 1156 Kbps Noise Margin 6.1 dB 6.5 dB Line Attenuation 35.0 dB 17.4 dB Output Power 0.0 dBm 12.8 dBm MSGC (number of bytes in overhead channel message) 90  12  B (number of bytes in Mux Data Frame) 254  34  M (number of Mux Data Frames in FEC Data Frame) 1  1  T (Mux Data Frames over sync bytes) 1  4  R (number of check bytes in FEC Data Frame) 0  0  S (ratio of FEC over PMD Data Frame length) 0.6691  0.9790  L (number of bits in PMD Data Frame) 3049  286  D (interleave depth) 1  1  Delay 0  0  Super Frames 21986  21984  Super Frame Errors 19  32  RS Words 0  0  RS Correctable Errors 0  0  RS Uncorrectable Errors 0  0  HEC Errors 12  7  OCD Errors 1  0  LCD Errors 0  0  Total Cells 10116077  1627806  Data Cells 81  184  Bit Errors 0  150  Total ES 18  0  Total SES 0  0  Total UAS 30  0 

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14 Nov 2013 09:21 #78233 by sicon
Replied by sicon on topic Re: Vigor 120 drops BT connection every other minute
that rate is not too bad the 120 should hold that

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14 Nov 2013 15:57 #78239 by j03y
Replied by j03y on topic Re: Vigor 120 drops BT connection every other minute
I would be surprised if this were the case but we had a 120 suddenly fail at the LAN port. Symptoms included not being able to access the web interface after a couple of minutes uptime and the LAN speed negotiating down to 10mb/s where it should be 100mb/s. Notice anything similar?

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22 Nov 2013 20:57 #78346 by ferarrifeet
Replied by ferarrifeet on topic Re: Vigor 120 drops BT connection every other minute

sicon wrote: Does the PPPoe have a name against it?
Try removing that and see if there is a difference

Also what is the SNR on the line - From experience I have found the 120s can be very flaky at times especially if the SNR is low.
I usually resolved the issue by replacing the 120 with an old Netgear DG834 :cry: in modem only mode - For some reason they can hang on to the ADSL signal right down to 0 db.



hi,could you possibly give me a detailed account of how you connected the netgear dg834 as modem ,i'm using a tenda n900 as router, having problems with vigor 120 dropping out every 30 secs or so, decided to try netgear but dont know how to set this up with settings, thanks

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