ADSL2 - LCP Down

[#1]

Hello,
I have noted a number of other people having problems with LCP down issues in May. I'm assuming there is a fault or maintenance going on somewhere at the PlusNet / Exchange end?
I have a Netgear DGND3300v2 (N300) ADSL2+ modem router and I have had rock-solid connection for the last 6 months on that router. Before that I had a DG834PN for 4 years using the same BT master phone port with again rock solid connection. However, the last week I have had frequent over-night disconnects. In most instances the modem reconnects, but occassionally it failes completely requiring my manual intervention of logging into the router admin screen and clicking 'connect'. I replaced the phone cable to my modem including the filter, and no change. I also tried my old DG834PN modem router, but that makes no difference to the LCP down issue.
Note the LCP down / non-reconnection happens on a nightly basis (See the log below). During the day the connection is rock-solid. The pain is that most mornings I have to login again to my router to force a reconnect. Very rarely, but sometimes, I have to actually reboot the modem-router.
Mon, 2011-05-23 05:00:02 - Send E-mail Success!
Mon, 2011-05-23 05:29:21 - DHCP server received REQUEST from 00:26:BB:39:91:DE Mon, 2011-05-23 05:33:14 - DHCP server received REQUEST from 00:26:BB:39:91:DE Mon, 2011-05-23 05:38:09 - LCP down.
Mon, 2011-05-23 05:38:15 - Initialize LCP.
Mon, 2011-05-23 05:38:15 - LCP is allowed to come up.
Mon, 2011-05-23 05:38:16 - CHAP authentication success Mon, 2011-05-23 05:39:12 - [UPnP set event:Teredo] from source 192.168.0.5 Mon, 2011-05-23 05:53:36 - LCP down.
Mon, 2011-05-23 05:53:43 - Initialize LCP.
Mon, 2011-05-23 05:53:43 - LCP is allowed to come up.
Mon, 2011-05-23 05:53:44 - CHAP authentication success Mon, 2011-05-23 05:54:18 - [UPnP set event:Teredo] from source 192.168.0.5 Mon, 2011-05-23 05:59:11 - DHCP server received REQUEST from 00:26:BB:39:91:DE Mon, 2011-05-23 06:10:54 - LCP down.
Mon, 2011-05-23 06:11:00 - Initialize LCP.
Mon, 2011-05-23 06:11:00 - LCP is allowed to come up.
Mon, 2011-05-23 06:11:01 - CHAP authentication success Mon, 2011-05-23 06:11:19 - [UPnP set event:Teredo] from source 192.168.0.5 Mon, 2011-05-23 06:28:43 - DHCP server received REQUEST from 00:26:BB:39:91:DE Mon, 2011-05-23 06:58:26 - DHCP server received REQUEST from 00:26:BB:39:91:DE Mon, 2011-05-23 07:00:13 - DHCP server received REQUEST from 00:26:BB:38:5B:D0 Mon, 2011-05-23 07:12:20 - DHCP server received REQUEST from 00:26:BB:38:5B:D0 Mon, 2011-05-23 07:28:16 - DHCP server received REQUEST from 00:26:BB:39:91:DE Mon, 2011-05-23 07:41:42 - DHCP server received REQUEST from 00:26:BB:38:5B:D0 Mon, 2011-05-23 07:58:06 - DHCP server received REQUEST from 00:26:BB:39:91:DE Mon, 2011-05-23 08:51:04 - LCP down.
Mon, 2011-05-23 08:51:10 - Initialize LCP.
Mon, 2011-05-23 08:51:10 - LCP is allowed to come up.
Obviously the above just shows the LCP down with successful reconnects, but as I said above, often the modem doesn't reconnect.

tgl

[#2]

Hi tgl,
It seems there's more than just that going on. I'd have a look at our troubleshooting guide and raise a fault if necessary.
Jojo

[#3]

Hi TGL
I am running exactly the same router - I switched as I thought that the problem was with my old one (Linksys). However I am still getting regular disconnects although in between the noise margin is pretty stable so I don't think  this is related to the router. I note that my log also shows "UPnP set event:Teredo" so am assuming that IPv6 connectivity is not implemented on the network.
Did you ever get your problem resolved?
Cheers
Nick

[#4]

The problem eventually sorted itself but I had to wait over a week (BTs IP profile was stuck).
Some interesting problems have subsequently occured - DMT (the DSL modem tool http://dmt.mhilfe.de/) stopped working. However, most curiously  today I was not able to run the complete BT speedtester (http://www.speedtester.bt.com/) as their system was trying to run something called a Tap3 test and I needed to reconfigure my connection to "speedtest@speedtest_domain" but could not get it to work. Even stranger, the downstram bitrate for my connection went up 22% (so I am hoping my IP profile will also come up in the next week or 2 or...) and DMT has started working again today. Don't you just love when things happen inexplicably.

[#5]

Hi globalforester,
Glad to hear things are going well.  Let us know if you need any further help.