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IP Profile reduced to 500kbps - ticket 20805075

egret
Dabbler
Posts: 13
Registered: 02-08-2007

IP Profile reduced to 500kbps - ticket 20805075

Ticket Number: 20805075 opened 12:20am, Thursday 30th November 2006

Sorry this is so lengthy, but I’m close to the end of my tether and can’t think of a brief way to explain. My profile has been dropped so low that I suspect it will keep disconnecting at peak times making the problem even worse.

I don’t think any of the problems are being caused by my equipment (or for that matter my line) but would be grateful for any suggestions.

I’m reluctant to try the test socket at the moment as I dread to think what BT will do to my profile if I disconnect!

Line Maxed mid-October and settled with:

Data rate

down 5500-6200Kbps up 448Kbps

Noise Margin up 20 dB down 7.5 dB (but varied a bit)
Output Power up 12 dBm down 19.5 dBm
Attenuation up 24 dB down 48.5 dB

Speeds around 4000 – 5000 kbps – very pleased so didn’t record / monitor closely

At the end of October / beginning of November DNS problems (PlusNet I assume judging by complaints) kept causing pages to timeout so, in my ignorance of Max adaptive technology, I changed DNS servers several times over a period of days. I hadn’t kept a record of my MSR but my speeds plummeted and the MSR went down to (I think) 2500kbps and then up to 3000kbps. I also had a non-computer related electrical problem which meant I had to suddenly shut down the electrical supply. Patiently following advice I went through the daily routine of powering down and reconnecting. By the end of November my sync was generally around 4500, MSR was still 3000kbps BT speedtest IP Profile was 3500kbps and my speed was capping at around 3000kbps. I raised the above ticket due to the discrepancy between PN and BT figures and because it was obvious my speed was being capped. PN upped the MSR to 4000kbps and instantly my speed increased to 3200-3500kbps. Despite following the powering down routine the BT profile stayed at 3500kbps, likewise my speeds. I added comments to my still-open ticket querying this as I was still showing sync around 4200kbps

BT tester 5 December:

Test1 comprises of Best Effort Test: -provides background information.
IP profile for your line is - 3500 kbps
DSL connection rate: 448 kbps(UP-STREAM) 4224 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 3232 kbps

It seemed to me my sync rate was being limited (previously 6200kbps) to 4200kbps and no amount of following procedures was having any effect.

When the ticket was opened exchange status was green, it is now back to red.

11 December an answer was added to my ticket advising the line rate was controlled dynamically by BT at the exchange and suggesting I try connecting to the test socket.

Let me add at this point, speed is not especially important but having seen how quickly BT drop the profile and speed after problems not necessarily related to the consumer or their line, I want / wanted a buffer zone.

Yesterday (12 December)
I shutdown my equipment and checked what I thought was the master socket (it wasn’t so I left it alone), when I reconnected I wound up on ptn-ag1 with a download sync of 160kbps!!

Stats:

just before:

Data rate

down 4128 Kbps up 448Kbps

Noise Margin up 20 dB down 15 dB
Output Power up 12 dBm down 20 dBm
Attenuation up 23.5 dB down 48.5 dB



Then after

Data rate

down 160 Kbps up 448Kbps

Noise Margin up 16 dB down 27 dB
Output Power up 12 dBm down 18 dBm
Attenuation up 24 dB down 49 dB



I waited a while, shutdown again, waited again and reconnected. Still ag1 but stats better:

Data rate

down 3776 Kbps up 448Kbps

Noise Margin up 20 dB down 16 dB
Output Power up 12 dBm down 18.5 dBm
Attenuation up 23.5 dB down 48.5 dB


A speedtest shortly after:



another test 30 minutes later was similar.

A couple of hours later (around 7pm) the speeds plummeted and the connection died. When I reconnected the connection was so slow webpages kept timing out and I kept being disconnected.

Stats

Data rate

down 3616 Kbps up 448Kbps

Noise Margin up 20 dB down 17 dB (but varied a bit)
Output Power up 11.5 dBm down 20 dBm
Attenuation up 23.5 dB down 48 dB

Speed below 500kbps

It was hours before I could connect to the BT tester where I found my IP Profile was now 500kbps

Test1 comprises of Best Effort Test: -provides background information.
IP profile for your line is - 500 kbps
DSL connection rate: 448 kbps(UP-STREAM) 3616 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 428 kbps

How can it be right to have an adaptive system that destroys your profile / speed almost instantly but takes so long to boost it back up there always seem to be isp / BT / exchange problems in the meantime preventing improvement?
13 REPLIES
James
Grafter
Posts: 21,036
Registered: 04-04-2007

IP Profile reduced to 500kbps - ticket 20805075

Is your connection stable? If you suffer from intermittency, then I would expect your bRAS profile to fluctuate.
egret
Dabbler
Posts: 13
Registered: 02-08-2007

IP Profile reduced to 500kbps - ticket 20805075

Thanks for the reply.

Yes, it is very stable. The only outages have been those described above.
James
Grafter
Posts: 21,036
Registered: 04-04-2007

IP Profile reduced to 500kbps - ticket 20805075

Then it is rather strange. Normally bRAS profile changes would occur if your hardware resynced at a lower level. there wouldn't really be any other reason why you should be seeing continual changes to your profiling.
James
Grafter
Posts: 21,036
Registered: 04-04-2007

IP Profile reduced to 500kbps - ticket 20805075

In addition to that, are you able to get any kind of logs from your router which would give some remotely useful information?
egret
Dabbler
Posts: 13
Registered: 02-08-2007

IP Profile reduced to 500kbps - ticket 20805075

I have a Barricade SMC7404BRA. There is a log facility but if there is a way to save all the logs (other than manually) I haven't found it. I have been copying the logs about twice a day since the problems started.

What sort of information would be useful?
James
Grafter
Posts: 21,036
Registered: 04-04-2007

IP Profile reduced to 500kbps - ticket 20805075

I just want to see if it gives out any information regarding the speeds that it is resyncing at. It might help to explain the constant changes in profile that you haver been seeing.
egret
Dabbler
Posts: 13
Registered: 02-08-2007

IP Profile reduced to 500kbps - ticket 20805075

The logs (to my eyes) just show ip address, when I logged on and smurf attacks. They don't look useful to me.

I have screen shots of statistics; is there a way to post these? I did add some to my fault report and there are lots of reports added by the CSC analysts. Their reports I could copy and paste, or are you able to view them on the fault report?
James
Grafter
Posts: 21,036
Registered: 04-04-2007

IP Profile reduced to 500kbps - ticket 20805075

Do you want to send me them in an email?
egret
Dabbler
Posts: 13
Registered: 02-08-2007

IP Profile reduced to 500kbps - ticket 20805075

This is a copy of the log from when I managed to connect last night (it never manages to get the time and date until connected)IP address ****:

12/13/2006 13:32:13 192.168.2.100 login success
12/13/2006 10:33:38 192.168.2.100 logout
12/13/2006 10:33:21 192.168.2.100 login success
12/13/2006 10:33:05 192.168.2.100 login fail
12/13/2006 10:32:59 192.168.2.100 logout
12/13/2006 10:29:32 192.168.2.100 login success
12/13/2006 08:55:51 NTP Date/Time updated
12/13/2006 08:54:50 Begin to query NTP
12/13/2006 02:55:50 NTP Date/Time updated
12/13/2006 02:54:48 Begin to query NTP
12/13/2006 01:13:11 192.168.2.100 logout
12/12/2006 21:03:24 192.168.2.100 login success
12/12/2006 20:55:48 NTP Date/Time updated
01/01/1970 00:00:15 ATM1 get IP:80.***.***.**
01/01/1970 00:00:15 CHAP Authenticate: OK
01/01/1970 00:00:13 ATM1 start PPP
James
Grafter
Posts: 21,036
Registered: 04-04-2007

IP Profile reduced to 500kbps - ticket 20805075

No use to me I'm afraid. I'm looking for information that applies directly to your sync speed rather then when you have connected. It's possible (likely) that your router doesn't log this information.
egret
Dabbler
Posts: 13
Registered: 02-08-2007

IP Profile reduced to 500kbps - ticket 20805075

Thanks, I'll email.
egret
Dabbler
Posts: 13
Registered: 02-08-2007

Here we go again :-(

Once again I suspect my IP profile has been dropped to 500kbps or less - I haven't been able to access the BT tester for days and am typing this instead of trying now.

2 January BT reduced my profile to 3500kbps, I couldn't find a reason for this and PlusNet left MSR at 4500kbps.

Long and involved story, so let's just say the time since then has basically been spent improving and unsticking profiles / MSR etc.

So today I finally (didn't dare to before) connect through the test socket. Improvement was only marginal so after a while I disconnected, waited a long time and then reconnected.

Great (I thought) improved sync 5536kbps and PlusNet showing MSR 5500kbps. I try a couple of tests at speedtest.net - not good, but I guess it's busy. Then I look at the RouterStats to find, although my router says I've been connected throughout, sync plummeted repeatedly in a short space of time..

I haven't changed anything since I reconnected and my connection has remained stable since those sudden unexplained sync reductions.

I have no idea why or how it happened, but as it seems stable again now and I haven't done anything, can only assume it is nothing to do with me or my equipment.....

But of course, Maxdsl will already have reset my connection.

I'm seriously close to pleading for a fixed rate. When running well I get great speeds on Maxdsl, my line and equipment are generally rock solid, then something beyond my control blips and I'm back to square one.

By the time contention etc kicks in, I don't think a 500kbps connection stands a chance.

For the record:

I'm on Broadband Premier Option 2
Average usage around 4.5 -5.5GB per month. So paying around £30 per month for (what is now) a 500kbps connection where my time online is spent refreshing the BT Tester or adding comments to my ticket.
egret
Dabbler
Posts: 13
Registered: 02-08-2007

IP Profile reduced to 500kbps - ticket 20805075

Either someone has changed something (thank you if that's the case) or there was another problem that has now resolved, at least to an extent.

This is typical of the earlier speedtests that prompted my post:



But I am now seeing 3000kbps+

Still no joy with the BT Speedtest though.

I'll shut up and go back to sleep Shockedops: