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Help Needed With Problem Similar To DNS Loss

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Help Needed With Problem Similar To DNS Loss

Every evening roughly between 6pm and 10pm I lose the ability to access the Internet over my PlusNet Broadband. The problem is very similar to DNS loss (i.e. there is no loss of sync or connection) but I've tried specifying fixed DNS servers in my Router and the problem remains.

When this problem occurs it generally lasts continuously for the time period involved, i.e. if I can't access the Internet from 6:30pm to 9:30pm the loss of service is generally continuous throughout that time - once it comes back I can accesss the Internet again until the following evening.

There were some problems when the Broadband was initially installed two years ago (caused by the condition of my line) and we are a long way from the exchange but it had all been running perfectly well before we went away over the August Bank Holiday weekend. When we came back after the August Bank Holiday the problem was there.

I'm an IT Technician so I did all the standard troubleshooting stuff (changed Routers, filters, removed all devices off the line, etc) but this didn't change anything.
I've left the power out of the only new electrical device we've purchased in the last two years but this didn't resolve things and our immediate neighbour (we live in a semi) has not bought any new elctrical equipment.

PlusNet contacted BT and a BT ADSL specialist came out who changed our main box in the lounge and did some re-wiring in the box outside the house. The SNR is now the best it's ever been and the line characteristics are great given we are such a long way from the exchange but I'm still getting the problem.

I have another telephone line coming in to the house which I have had enabled with TalkTalk broadband as a backup since 3rd September and I have not had any problems with this line or service. In fact, I switch to the TalkTalk broadband each evening when the PlusNet Broadband is unusable.

Has anyone experienced anything like this?
7 REPLIES
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RE: t: Help Needed With Problem Similar To DNS Loss

I seem to be in a similar position to you. For the last few months my connection has steadily got worse. For the last few days my connection has been dropping altogether at similar times to you. Mine seems to be mainly between 5:30pm and 9:30pm. When I raised a question and the usual tests were done the reply came back saying that no fault was found. PlusNet now say that I should perform further tests myself.
My router is connected straight to the master socket via a faceplate splitter, with the only other items connected being my phone and Sky box. I shall disconnect my Sky box the next time the problem occurs. All my other equipment is as at has been for quite some time now. I've had my computer for 2 years and my router since I first connected with PlusNet about 4 years ago. There have been no major configuration changes that co-incide with these problems.
Has anyone actually found that the problem was at their end and not PlusNets? If so what was it and the fix?
I am getting really frustraited now as my connection up until the last few months was fine with very few problems at all.
I think I am in the same boat as quite a lot of other people looking at these forums.
Maybe its time to move to someone more reliable!
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Help Needed With Problem Similar To DNS Loss

I get to see a reasonable amount of people with Broadband problems over time and I know that at the moment other ISP's are having Broadband problems as well and their customers are getting pretty fed up too.

As far as the fixes, problems I've found that have caused problems for Broadband users have included faulty splitters, old telephones causing resistance on the line, faulty modems/Routers and interference from nearby electrical equipment.

I think I'm right in saying that BT require that basic troubleshooting steps are taken before they will accept a fault from an ISP, although there are probably others on these forums who know more about that than me.

PlusNet gave me the basic troubleshooting steps a while ago and I have them in a Word document. When I had my Broadband problem I typed in the results of each troubleshooting step and then pasted the whole document in to a PlusNet question. They asked me a couple of other things but did pass the fault on to BT. If you would like a copy of the Word document just email me at enquiry@computer-security.org.uk and I'll send you one.
karmi
Grafter
Posts: 60
Registered: 13-09-2007

Help Needed With Problem Similar To DNS Loss

Mate I am having EXACTLY the same problem and for the past month, at random times (Between 17:00 and 23:00) my "PRIMARY DNS SERVER" will go down, but if im on Teamspeak I can still hear people very briefly, fuzzy, like lack of bandwidth or something, then it disconnects me from whatever I do. I have added the extra DNS servers to my router, my network cards.. absolutely everything imaginable.

If its Plusnet ill move ISP, I already lost out on ALOT because of these disconnects during peak times, the PRIMARY DNS server seems to go down, then come back up, without reconnecting or disconnecting its just a matter of waiting.

Does ANYONE have an idea how to fix this? Seriously, if it cant be fixed im requesting a MAC and getting the hell away from Plusnet who have been great these past few years.

The only thing I can think of is I am using an extension lead to take my router up the stairs, but WHY would it go down at the same times and then come back up if its not an ISP related issue? Or an exchange congestion issue maybe? Forfar exchange, says green light - who knows? Im on 2MB Pnet 21.99 a month btw using a Voyager 105 ADSL router.
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Help Needed With Problem Similar To DNS Loss

You need to prove if its dns or not as if it is its not a bt fault. When it drops again you need to try opening a cmd prompt and do a ping to www.plus.net and see if you get a reply or cant find host type of error. If you cant ping it then try an ip address like 194.119.131.65 and see if you get a reply if you do then it is a dns issue.

If its a dns issue then you need to work out who has the problem. try changing the dns and see if that solves it. Its best to have 2 or 3 dns setup all from differant isps so if one goes down your backup should work.

It could be that your problem isnt with the dns server but its with windows dns cache which can hold null records if it is there is a fix http://www.speedguide.net/downloads.php

You can have exceeded you tcip connections is there is there any 4226 error in the event logs?

here is a list of most isps dns which may help

AOL

DNS Server:-
205.188.146.145

Incoming Mail (imap) server - imap.aol.com (port 143)
Outgoing Mail (smtp) server - smtp.aol.com (port 587)

BT Yahoo/Broadband/Internet

DNS Servers:-
194.72.6.57
194.73.82.242
194.73.73.172
194.73.73.173
194.72.9.44

Incoming Mail (pop3) server - mail.btinternet.com
Outgoing Mail (smtp) server - mail.btinternet.com

You also require your BT Broadband username. This is made up of your.name@btbroadband.com where "your" equals your first name and "name" equals your surname, e.g. joe.bloggs@btbroadband.com. BT Broadband does not require that you enter a password to connect but some routers won't connect to the Internet without a password, in which case enter the word BT.



BT Broadband

194.72.9.38
194.74.65.69
194.72.9.34
194.72.9.38
194.74.65.68
194.74.65.69
194.72.0.98
194.72.0.114
62.6.40.162
62.6.40.178

Demon

Primary DNS Server:- 158.152.1.58
Secondary DNS Server:- 158.152.1.43

Incoming mail (pop3) server - pop3.demon.co.uk (port 110)
Outgoing mail (smtp) server - post.demon.co.uk (port 25)

Eclipse

DNS Servers:-
212.104.130.9
212.104.130.65

Incoming Mail (pop3) server - mail.eclipse.co.uk
Outgoing Mail (smtp) server - smtp.eclipse.co.uk

Freedom2Surf

Primary DNS Server:- 194.106.56.6
Secondary DNS Server:- 194.106.33.42

Incoming Mail (pop3) server : inmail.f2s.com
Outgoing Mail (smtp) server : outmail.f2s.com


Metronet

DNS Servers:-
213.162.97.65
213.162.97.66

Nildram (ADSL)

DNS Servers:-
213.208.106.212
213.208.106.213

Incoming Mail (pop3) server : pop3.nildram.co.uk
Outgoing Mail (smtp) server : smtp.nildram.co.uk

Onetel

DNS Servers:-
212.67.96.129
212.67.96.130

Incoming Mail (pop3) server : mail.onetel.net.uk
Outgoing Mail (smtp) server : mail.onetel.net.uk

Pipex

DNS Servers:-
62.241.160.200
158.43.240.4

Incoming Mail (pop3) server : pop.dial.pipex.com
Outgoing Mail (smtp) server : smtp.dial.pipex.com

Plusnet

DNS Servers:-
212.159.13.49
212.159.13.50
212.159.6.9
212.159.6.10

Incoming Mail (pop3) server : mail.plus.net
Outgoing Mail (smtp) server : smtp.plus.net

Tiscali

Primary DNS Server : 212.74.112.66
Secondary DNS Server : 212.74.112.67

Incoming Mail (pop3) : pop.tiscali.co.uk
Outgoing Mail (smtp) : smtp.tiscali.co.uk

TescoNet

Primary DNS Server : 194.168.4.100
Secondary DNS Server : 194.168.8.100

Incoming Mail (pop3) server : mail.tesco.net
Outgoing Mail (smtp) server : mail.tesco.net

username format : username@adsl.tesco.net

VirginNet

DNS Servers:-
194.168.4.100
194.168.8.100

Incoming Mail (pop3) server : pop.virgin.net


Wanadoo UK

195.92.195.94
195.92.195.95

Zen

212.23.8.1
212.23.3.1
212.23.8.6
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Help Needed With Problem Similar To DNS Loss

Just thought I'd give an update. I really hope I'm not talking too soon, but since yesterday evening when I added all the extra PlusNet DNS servers to my network settings, things have been pretty good. So far my connection hasn't dropped and speed seems much better too (all fingers and toes crossed). I'd like to say a big thanks to mwright for this information. It's just a shame that no one at PlusNet thought to suggest I try this. Strangely though these DNS servers are different to the ones I was supplied by PlusNet when I joined. The two I was given were... 212.159.11.150 and 212.159.13.150. Anyway here's hoping. Think I'll just keep hold of that Zen phone number though, just to be on the safe side.

hegartys I tried your email link for the word doc, but my email was returned. Hopefully I won't be needing it now, but thought I'd let you know. Cheers anyway.
karmi
Grafter
Posts: 60
Registered: 13-09-2007

Help Needed With Problem Similar To DNS Loss

Hmm louiseandali for the past few nights I've had no problems at all with no changes.

Lets just hope it stays that way - either way im very pleased its fixed. I was told to use these 4 Plusnet DNS's on every computer:

212.159.6.9
212.159.6.10
212.159.13.49
212.159.13.50

Added them to each computer's Local Area Network bit by Start, Control panel, network connections, right click active Local area network, Properties, highlight Internet Protocol (TCP/IP), Properties, Tick Use The following dns servers and insert two from above, then click Advanced, click DNS tab and add the other two. Then when theres a DNS problem it'll go through all of them (i assume).

Just incase anyone else is having the same problem and is as hopeless as I am with computers. Smiley
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RE: Help Needed With Problem Similar To DNS Loss

So much for keeping everything crossed. Looks like I did speak too soon. My connections went yet again this morning.
Oh well, better start researching some other ISPs!