Ongoing problems (router issue?)

Thought i would start a new thread, as i think ive come across something so didnt want to confuse the other thread.

I changed my target SNR but still go disconnected about 30 mins ago. I noticed tho that even though the router resynced, it would not find my IP address or DNS settings, hence i couldnt get online. I have a screenshot to show what happened

http://imageshack.us/f/685/routerrf.png/

The sync is low probably as i rebooted loads of times. However as you can see even though it says connected and has sync there is no IP address, Gateway or DNS servers. I tried to put them in manually but still didnt work. If i click the "connection status" button it shows as disconnected though. Here is what the connection log for the last few minutes shows:

29 Sep 2012 20:21
29 Sep 2012 20:22
35 secs

29 Sep 2012 20:02
29 Sep 2012 20:02
9 secs

29 Sep 2012 19:59
29 Sep 2012 20:01
2 mins

For some reason its either not getting the IP address etc, or losing it after a few seconds. Interesting this happened last night around the same time, although i wasnt in

So my question is, could this be caused by any other issue other than my router?

Edited by bobble_bob (Sat 29-Sep-12 20:32:30)

Just happened again too, needed to turn off router to get it to find the settings. Seems hit and miss if it will work

It could be line noise.

Switch off the router and unplug the psu from the power supply socket.

Don't switch it on again until late morning/early afternoon and take the line stats as soon as it powers and hopefully connects up.

My advice is don' t play about with it any more tonight.

Mac

Hello,

I think I've dealt with a similar problem to yours earlier in the year when someone got upgraded from adsl max to adsl2+. They had a stable connection up until the upgrade to adsl2+.

I went around to check the stats, and the downstream snr was fluctuating by about 1-2db where as it should be relatively stable. Turned out to be the line filter causing the problem, and adsl2+ using higher frequencies amplified the problem with the weak filter.

They had loads of different line filters in a cardboard box, so i tested all of them via the bt test socket making sure the snr was only varying by around 0.1-0.2db. Most of them were absolute rubbish and I chucked them in the dustbin.

The line was now stable and the snr came down on it's own.

Thing is i have been on 21CN since Feb this year but with an ADSL1 profile as James (isp manager) put it

Then went to LLU Monday but only at the exchange, still use ADSL24's network (daisy) and line was ok ish, 1-2 disconnects a day. Last 2 nights tho i can barely keep sync for a minute or 2.

Is the router reporting no IP, DNS settings normal though when it cant connect?

The problems im having are similar to ones i had earlier this year

http://forums.thinkbroadband.com/general/t/4083246-r...

Although back then i lost all connection, not getting it for a minute or 2.

WAN PPPoA 145 93 0 1 7 02:16:43

The PPPoA session is showing that, and i notice the ADSL light doesnt flash it just goes red. So wonder if its not losing sync but just wont stay connected for some reason?

It's synced with exchange but failed to authenticate with ISP (LCP/CHAP down). Reboot usually cues it unless ISP authentication server is really playing up.

Well from 7pm last night until 4am this morning it was on and off, sessions lasting a minute or 2. Then come 4am ive been online since and still working now. See what happens tonight

Edited by bobble_bob (Sun 30-Sep-12 07:26:24)

You should consider monitoring your SNR overnight using Routerstats.

In reply to a post by bobble_bob:

it was on and off

What is "it"? Sync or Internet?

Last night was the internet, it stayed synced all night but wouldnt connect, or if it did it only did it for a few mins

Edited by bobble_bob (Sun 30-Sep-12 16:14:49)

Yea done that before, the fact it stayed synced all night though im not sure if it was a noise issue.

Does being on 21CN but with an ADSL1 profile still class as being on ADSL2+?

Been running it, and just got disconnected, routerstats logged this just before the disconnect

Rx-Noise=-51 Tx-Noise=13

-51 sounds alot! Dunno why i didnt get these spikes on ADSL one though, and no idea what caused it

Also having issues with maintaining a stable connection since the free "upgrade" from ADSL24 on the 28th Sept.

DSL stays connected fine - is up for the entirety of the routers uptime, but the connection drops with the error "PPP link down (Internet)" also CHAP fails to authenticate every now and then.

i have followed the FAQ on their website and raised my SNR profile from 6dB to 12, with interleaving on, and nothing changed.

I am also syncing at much higher speeds, at 6dB it was 14000, and now at 12 its 11000. the email didn't mention switching service, just an increase in the bandwidth cap, and a decrease in the monthly charge.

i am using a Speedtouch 585v6

http://i46.tinypic.com/10wnml3.png

I got the same logs last night, im wondering if it was an ADSL24 ISP issue rather than the switchover last night? Seems weird we both got same logs with sync but disconnects every few mins. Will see what tonight brings and if it happens again. Report back if its working or not tonight and i will do same.

Also what are your logs like from Friday night/Sat Morning? I got the same thing around 7-9pm, then fine after that

One other thing, whats it been like this morning/afternoon? Still the same 1 minute sessions?

Edited by bobble_bob (Sun 30-Sep-12 19:53:11)

It started on Friday night at 23:55. it came back up at 00:05

I was waiting all day Thursday for the planned downtime (email said i would be upgraded on the 27th) but nothing happened. I figured this was the upgrade.

about 2 minutes after coming back up, the disconnects started. I stayed up for 2-3 hours fiddling with it, but nothing seemed to fix it. Saturday morning another person in the house said they used the internet fine for 3 hours (10am>)

I managed to get around to using it around 4pm yesterday afternoon and it disconnected about an hour later, the connection was flaky for the rest of the night.

according to the logs, since 5am this morning, it has been connected fine.

In reply to a post by kamputee:

according to the logs, since 5am this morning, it has been connected fine.

Thats roughly when mine came back on, so i would imagine last night was a fault at their end and not related to the upgrade.

Apart from last night, when it goes down does it lose sync or not?

Nope.

"xDSL Linestate" dropped out at the first disconnect at 23:55 friday, but apart from that, DSL has been stable throughout. Stays synced the entire time the router is up.

See mine doesnt, whether thats the Netgear router, noise i dunno.

So apart from abit Friday and Saturday night its been pretty much ok?

I'm getting the same problems, had the free upgrade and getting connection problems, seems more stable when I changed from 6db to 9db but still getting problems. I get reconnected back to the exchange but wont go further to get DNS/IP etc from ISP, takes a few rooter reboots to get a working connection. Was pretty stable before all this. I'm not bothered about the extra speed I just want a stable line that dont drop. I'm using a Netgear DG834GT router with old firmware.

Did you get the same problems as us (ie Saturday night/Sunday morning?) Then fine rest of time?

Edited by bobble_bob (Sun 30-Sep-12 21:21:52)

In reply to a post by bobble_bob:

Does being on 21CN but with an ADSL1 profile still class as being on ADSL2+?

No, it's classed as being on WBC.

So could my ISP change me from ADSL2+ to an ADSL1 profile? They had me on that before this upgrade and connection was fine

In reply to a post by XRaySpeX:

In reply to a post by bobble_bob:

Does being on 21CN but with an ADSL1 profile still class as being on ADSL2+?

No, it's classed as being on WBC.

Not if he is now on LLU.

In reply to a post by bobble_bob:

Did you get the same problems as us (ie Saturday night/Sunday morning?) Then fine rest of time?

to add my 2cents i also got the Saturday night/Sunday morning thing started at 10:40 and logs ended around 00:56 but had to reboot in the morning my connection speed is at around 11000 which is the same as before but still disconnect every so often where previously it was rock solid i had seen 25 days before

Yea i think some got changed over on the 28th, then had the problems at the weekend which it seems arent related to the changeover, just coincidence

They could if they agreed so. Indeed ADSL2+ will downgrade to ADSL if it finds line unstable.

But you might be able to do it yourself via the router. You certainly can with the DG834G v4 (Broadcom chipset), but I don't know the DG834G v5 (Conexant chipset).

Look under the Basic or ADSL Settings for an ADSL Mode field. Failing that you may be able to get at it via TELNET as per this page: http://www.kitz.co.uk/routers/netgeardg834_interleav... . I don't know the BusyBox command for the V5 but for the V4 it is
'adslctl configure --mod d (or it might be 1)'.
Or try 'adsl help'.

But post your router stats (Show Stats) anyway; we may be able to see something.

Edited by XRaySpeX (Sun 30-Sep-12 22:32:41)

Well, OP did say he was on 21CN and I took his word for it (until proved otherwise).

Sorry for confusion. I was on 21CN with ADSL1 profile for about 6 month and everything was ok. Then last week ADSL24 customers got an 'upgrade' that meant going onto their LLU service. Soon as i got put on that i was on full ADSL2+ and i think the higher frequency that runs at is making things more unstable

I have an option for DSL Mode and can select either Auto, ADSL2+ or ADSL(G.DMT)

Would ADSL1 be ADSL(G.DMT) and will that work? Seems too simple

Edited by bobble_bob (Sun 30-Sep-12 22:37:55)

Yes, G.DMT! saves messing with TELNET.

Thanks, will give it a try if the line doesnt become more stable soon

In reply to a post by XRaySpeX:

Well, OP did say he was on 21CN and I took his word for it (until proved otherwise).

Try OpticalSpeX .
http://forums.thinkbroadband.com/general/t/4162328-o...

Cor, you don't 'alf go on!

No, I need to lend them to you!

I answered the Q as it was propounded:

In reference to forums.thinkbroadband.com/general/t/4162498-re-ongoing-problems-rou...:

being on 21CN

It is irrelevant that he is now on LLU; the Q was asked in the context of 21CN.

In reply to a post by XRaySpeX:

Cor, you don't 'alf go on!

No, I need to lend them to you!

I answered the Q as it was propounded:

In reference to forums.thinkbroadband.com/general/t/4162498-re-ongoing-problems-rou...:

being on 21CN

It is irrelevant that he is now on LLU; the Q was asked in the context of 21CN.

LOL, indeed you did. But he clearly didn't mean to ask the question as propounded. As you say, it is irrelevant. My guess is he is one of the many who do not know that 21CN is irrelevant to LLU.

Just to put this point to bed, hopefully.

Alternatively, OP was asking about how it was before he went LLU, which is how I took it. Nevertheless, as you say, the answer to this point has no relevance to the main issue.

Seems i am getting noise spikes that knock the connection out, however these spikes never happened on ADSL1. I know ADSL2+ runs at a higher frequency, so what could potential cause noise spikes on the line now that wasnt their on ADSL1?

It runs on the same frequencies as ADSL(1), plus the same number of frequencies above them. It's just a fact of life that the higher frequencies are more likely to be affected by noise.

Whether it is that they are more sensitive, or whether there is more other stuff around at those frequencies, or both, I don't know.

In reply to a post by Anonymous:

I'm getting the same problems, had the free upgrade and getting connection problems, seems more stable when I changed from 6db to 9db but still getting problems. I get reconnected back to the exchange but wont go further to get DNS/IP etc from ISP, takes a few rooter reboots to get a working connection. Was pretty stable before all this. I'm not bothered about the extra speed I just want a stable line that dont drop. I'm using a Netgear DG834GT router with old firmware.

Quick update, for the past 2-3 days my connection has remained stable, no drops and its still at 9db, this seems to have been a good move to make. Need to see what happens when I reboot router to see how it reconnects but at the moment increasing signal to noise ratio has helped alot, I'm pretty happy with the result but still monitoring it.