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Standard User lexden16
(regular) Sat 09-Feb-13 12:05:04
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Reduced FTTC Profile


[link to this post]
 
My FTTC connection has been faultless for nearly a year. My modem/router log showed max attainable speeds of 98/27 on an 80/20 connection with actual speeds of 76/16 at all times of the day. Three days ago, there was an internet interruption at 1.04AM followed by a re-synch. I ran a speedtest a few hours later and the downstream speed was <3 - upstream 16.5. A check after a 30 minute power down gave the same results. I spoke to my ISP who initially inferred that it must be my modem: that said, they did have the good grace to call me back to say that other customers were experiencing similar issues and it was down to a network capacity increase resulting in some unintended consequences. They had asked BT to re-route part of their network. Two hours later, there was another interruption followed by a re-synch and normal 76/16 service resumed. The following night there were 2 interruptions due to CHAP authentication failures. My router log showed downstream FECs accruing at Millions per minute. I did a further power down and this cleared the issue. The following day, DSL synch was lost and could not be re-established. I was told that the problems were probably related to the 21CN upgrade ongoing at my exchange. I had a 21CN ADSL service on my line 2 years ago!

The ISP insisted that I replace my modem with the one provided by BT. Initially, it also failed to establish a connection, had a few interruptions of service but has been stable from last night through until 3.42AM and 5AM this morning when it failed a PPP negotiation. A further speedtest shows that the line IP has fallen from 76 to 68.

Grateful for any thoughts on what might be going on here? Provided line stability is maintained, how soon can I expect my IP to increase? When would it be safe to use my own modem/router again?

If the problems persist, then what should I be doing to get my ISP to take the matter more seriously?

For info, my log shows the following:

09.02.13 05:00:34 Internet connection established successfully. IP address: xx.xx.xx.xx, DNS server: 212.23.6.100 and 212.23.3.100, Gateway: 62.3.84.21, Broadband PoP: bras-red1.bm-th-B20C4110500113
09.02.13 05:00:23 Timeout during PPP negotiation.
09.02.13 05:00:23 Internet connection cleared.
09.02.13 03:42:17 Internet connection established successfully. IP address: xx.xx.xx.xx, DNS server: 212.23.6.100 and 212.23.3.100, Gateway: 62.3.84.21, Broadband PoP: bras-red1.bm-th-B20C4110500113
09.02.13 03:42:17 Internet connection cleared.
08.02.13 16:53:55 Internet connection established successfully. IP address: xx.xx.xx.xx, DNS server: 212.23.6.100 and 212.23.3.100, Gateway: 62.3.84.19, Broadband PoP: bras-red1.bm-th-B20C4110500113
08.02.13 16:52:55 Log in at Internet Service Provider failed. CHAP authentication failure, unit 3688
08.02.13 16:52:42 PPPoE error: Timeout.
08.02.13 16:52:29 PPPoE error: Timeout.
08.02.13 16:52:15 PPPoE error: Timeout.
08.02.13 16:52:02 PPPoE error: Timeout.
08.02.13 16:51:48 PPPoE error: Timeout.
08.02.13 16:51:35 Timeout during PPP negotiation.
08.02.13 16:45:37 Internet connection established successfully. IP address: xx.xx.xx.xx, DNS server: 212.23.6.100 and 212.23.3.100, Gateway: 62.3.84.21, Broadband PoP: bras-red1.bm-th-B20C4110500113
08.02.13 16:45:26 PPPoE error: Timeout.
Standard User RobertoS
(sensei) Sat 09-Feb-13 13:14:01
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Re: Reduced FTTC Profile


[re: lexden16] [link to this post]
 
The ISP insisted that I replace my modem with the one provided by BT. Initially, it also failed to establish a connection, had a few interruptions of service but has been stable from last night through until 3.42AM and 5AM this morning when it failed a PPP negotiation.
The modem doesn't do the PPP negotiation, your router does. When this happens you need to check the modem is still sync'ed with the cabinet.
A further speedtest shows that the line IP has fallen from 76 to 68.

Grateful for any thoughts on what might be going on here? Provided line stability is maintained, how soon can I expect my IP to increase?
The IP Profile is determined by the sync, which doesn't change unless you reconnect. It is 0.9679 of the sync speed and changes immediately the sync speed does. (Given time for the PPP session to be dropped, as it is the establishment of the PPP session that triggers an IP profile update if necessary).

There is also a slight possibility that the DLM has played with the line profile because of whatever is going on. Only time will tell on that one. Or full line stats.
When would it be safe to use my own modem/router again?

If the problems persist, then what should I be doing to get my ISP to take the matter more seriously?
I would try a cheap router just to eliminate the possibility that your Fritz box is playing up. You can get OK ones for under £30. Ongoing losses of PPP and CHAP Authentication failure could be the router, something to do with the Zen end, or various Openreach (line) or BT Wholesale problems. To be happening so frequently, including the middle of yesterday afternoon, would sound like something serious enough to be appearing in Zen's status pages if it were their end or BT Wholesale.

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 54.3/15.4Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Standard User lexden16
(regular) Sat 09-Feb-13 17:12:45
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Re: Reduced FTTC Profile


[re: RobertoS] [link to this post]
 
Thank you. I still believe that the problem is on the BT side of the master socket; however, I have been in contact with AVM support and they will no doubt get me to run some diagnostic tests to rule out F!B faults. Interestingly, my portal is now showing the following:

19996 68755 71032 TR101 Auto 09-Feb-2013 05:08 09-Feb-2013 05:08
20000 77433 79996 TR101 Auto 08-Feb-2013 16:53 08-Feb-2013 16:53
20000 77433 79996 TR101 Auto 08-Feb-2013 16:52 08-Feb-2013 16:52
1108 37401 38640 TR101 Auto 08-Feb-2013 16:45 08-Feb-2013 16:45
19996 77433 79996 TR101 Auto 18-Oct-2012 00:27 18-Oct-2012 00:27

The OR modem was activated at 16.45 on the 8th. Prior to the first disconnect at 1.04am 3 days ago, my F!B max attainable rates well 97/27.5. Sadly, the OR modem/F!B combination does not give this level of info as you well know


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Standard User jchamier
(knowledge is power) Sat 09-Feb-13 17:45:47
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Re: Reduced FTTC Profile


[re: lexden16] [link to this post]
 
In reply to a post by lexden16:
Sadly, the OR modem/F!B combination does not give this level of info as you well know


I assume you're now using the F!B as a PPPoE client connected to the openreach supplied modem. You could "unlock" the modem to see its stats, easy if its a Huawei, hard if its an ECI.

James BT Infinity 2 19/09/2012 - Estimate 44.6/6.5 - Install 52/12 - Actual 46 / 8 Mbps
Huawei VDSL -> Draytek router -> Apple Airport Extreme -> Belkin Switch -> Windows/Mac/Linux/NAS/Phone
13 years of broadband - 1999 ntl:(512k/1M)/BTbusiness(2M)/Metronet(2M)/Bulldog(8M/16M)/BE(19M/16M)/BT FTTC(46M)
Standard User RobertoS
(sensei) Sat 09-Feb-13 20:09:18
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Re: Reduced FTTC Profile


[re: lexden16] [link to this post]
 
AVM?

Anyway, I did say "to rule out" the Fritz box. As a cost-effective way of proving it isn't your problem, and providing you with a backup router in case the FritzBox catches fire tomorrow or gets pee'ed on by the cat. Or - given a moderately intelligent cat - both!.

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 54.3/15.4Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Standard User jchamier
(knowledge is power) Sat 09-Feb-13 20:23:38
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Re: Reduced FTTC Profile


[re: RobertoS] [link to this post]
 
In reply to a post by RobertoS:
AVM?

The Fritz!Box company - http://www.avm.de/en/

James BT Infinity 2 19/09/2012 - Estimate 44.6/6.5 - Install 52/12 - Actual 46 / 8 Mbps
Huawei VDSL -> Draytek router -> Apple Airport Extreme -> Belkin Switch -> Windows/Mac/Linux/NAS/Phone
13 years of broadband - 1999 ntl:(512k/1M)/BTbusiness(2M)/Metronet(2M)/Bulldog(8M/16M)/BE(19M/16M)/BT FTTC(46M)
Standard User RobertoS
(sensei) Sat 09-Feb-13 21:06:42
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Re: Reduced FTTC Profile


[re: jchamier] [link to this post]
 
Thanks smile.

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 54.3/15.4Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Standard User lexden16
(regular) Sun 10-Feb-13 21:00:44
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Re: Reduced FTTC Profile


[re: jchamier] [link to this post]
 
Sorry been a bit busy today dealing with a possible EBay scam. AVM (Fritz!Box) in Berlin provide pretty good support for their kit including a 5 year guarantee. I have run the box in diagnostics mode for 30 minutes and I have a detailed report to send on to them. It will interesting to see what they have to say. The OR modem has disconnected twice today so clearly something is not quite right with my set up/line. A cheap replacement router really isn't a solution as the F!B is also my DECT and IP telephone base station and answer phone.
Standard User lexden16
(regular) Mon 11-Feb-13 11:24:00
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Re: Reduced FTTC Profile


[re: lexden16] [link to this post]
 
I am getting more and more confused about what is going on here. Two disconnects overnight have resulted in a dropped IP of 56.66/20 with actual speeds of 55.08/11.39. My ISP keeps requesting that I plug the OR modem into the test socket. There is no test socket per se for FTTC so presumably it would need one of the old telephone line filters? That said, given that all BT documents state:

FTTC demarcation rules are as follows - The NTE5 is the Network Termination Point of the Openreach access network within the end userís premises, although Openreach also maintains the active NTE. The active NTE is the FTTC VDSL modem and will be located close to a power source and the desired service location. The active NTE can be located separately from the NTE5 and can be connected via Data Extension Kit (DEK) cabling up to a length of 30m. Any Openreach-installed data extension wiring comes with a one-year warranty and becomes the end userís property. (Industry Guide Issue 1.0)

My data extension is still within the one year bracket so I assume that any fault in the cable socket would be non-chargeable. The ISP then went on to say that OR would not be interested in checking the line as the speed is well above minimums.

The issue does appear to be related to the CHAP negotiation. The ISP did admit that they had recently undertaken some work on their radius server software because of issues with non -ISP supplied routers. They thought that all problems had been resolved. Meanwhile I wait for my router manufacturer to get back to me with the results of the diagnostic tests that I have run on my router.
Standard User greenglide
(experienced) Mon 11-Feb-13 11:38:38
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Re: Reduced FTTC Profile


[re: lexden16] [link to this post]
 
There is no test socket per se for FTTC so presumably it would need one of the old telephone line filters?


Yes there is!

You unscrew the faceplate of the NTE5 and there is a socket behind.

Since there will only be the VDSL connection when the VDSL modem is plugged into this socket there is no requirement for a filter.

BT Infinity 2 - IP profile 77 / 20 - super fast!
Previously BE Unlimited - 21,000 Download 1,200 Upload but then moved house - 6,500 Down, 1Mb/s up - gutted!
Ex <n>ildram , been to SKY MAX - 15,225 Download
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