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Aspiring Contributor
Posts: 10
Registered: ‎01-10-2010
0
Accepted Solution

PPP link up and down, ADSL steady

Hello BTCare forum

 

This is my first post, so please forgive me if I'm asking a question that's been answered.  I've Googled and searched the forums but not found anything so far...

 

Here's the situation ... I've had BT BB for three years and ADSL2+ for about six months.  It's all been fine and really solid as long as I can remember.

 

A few days ago the PPP started going up and down, even though the ADSL link is really steady and stays up.  I've phoned BT and they did some line tests, but I don't think the problem is with the line or with my DSL profile.

 

Here's an example of my Connection logs for today:

 

 

18:23:05   1 Oct PPP link up (Internet) [109.152.35.4]
18:23:02   1 Oct PPP CHAP Chap receive success : authentication ok
18:23:02   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
18:22:59   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
18:22:42   1 Oct PPP link down (Internet) [86.164.179.136]
18:09:26   1 Oct PPP link up (Internet) [86.164.179.136]
18:09:22   1 Oct PPP CHAP Chap receive success : authentication ok
18:09:22   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
18:09:09   1 Oct PPP link down (Internet) [109.154.133.155]
18:06:46   1 Oct PPP link up (Internet) [109.154.133.155]
18:06:46   1 Oct PPP CHAP Chap receive success : authentication ok
18:06:46   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
18:06:27   1 Oct PPP link down (Internet) [109.152.35.127]
17:35:53   1 Oct PPP link up (Internet) [109.152.35.127]
17:35:46   1 Oct PPP CHAP Chap receive success : authentication ok
17:35:46   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
17:35:33   1 Oct PPP link down (Internet) [109.152.61.135]
15:47:41   1 Oct PPP link up (Internet) [109.152.61.135]
15:47:40   1 Oct PPP link down (Internet) [109.152.61.135]
15:47:40   1 Oct PPP link up (Internet) [109.152.61.135]
15:47:34   1 Oct PPP CHAP Chap receive success : authentication ok
15:47:34   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
15:47:18   1 Oct PPP link down (Internet) [109.152.85.132]
14:09:00   1 Oct PPP link up (Internet) [109.152.85.132]
14:08:56   1 Oct PPP CHAP Chap receive success : authentication ok
14:08:56   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
14:08:36   1 Oct PPP link down (Internet) [109.152.77.230]
13:58:29   1 Oct PPP link up (Internet) [109.152.77.230]
13:58:28   1 Oct PPP CHAP Chap receive success : authentication ok
13:58:25   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
13:58:08   1 Oct PPP link down (Internet) [109.154.135.253]
12:32:08   1 Oct PPP link up (Internet) [109.154.135.253]
12:32:08   1 Oct PPP CHAP Chap receive success : authentication ok
12:32:08   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
12:31:52   1 Oct PPP link down (Internet) [109.152.70.93]
12:27:53   1 Oct PPP link up (Internet) [109.152.70.93]
12:27:52   1 Oct PPP CHAP Chap receive success : authentication ok
12:27:52   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
12:27:38   1 Oct PPP link down (Internet) [109.152.86.89]
11:18:55   1 Oct PPP link up (Internet) [109.152.86.89]
11:18:54   1 Oct PPP CHAP Chap receive success : authentication ok
11:18:54   1 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
11:18:35   1 Oct PPP link down (Internet) [109.152.72.192]

 

 

The funny thing is the ADSL itself is up all the time, as indicated by the ADSL line status page.

 

So here's my question -- why would the PPP keep going up and down even when there's no problem with the ADSL?  Any ideas?

 

Thanks,

 

Martin :robothappy:

 

 

Aspiring Contributor
Posts: 10
Registered: ‎01-10-2010

Re: PPP link up and down, ADSL steady

Ive been having pretty much the exact same issue. The PPP is just dropping like no bodies business but my ADSL is rock solid.

Heres my thread about it, but not getting anywhere.

Are you getting any other problems? Im having insane amounts of packet loss and a real mix up with download speeds and my IP profile going up and down.

 

That said, Ive spoken to BT and they are acknowledging that there is a problem. At first the guy did some tests and it said there wasnt any problem - I figure this is because its an intermittent drop. If they say theres nothing wrong, ask them to do more tests maybe.

Hopefully itll get fixed so this problem will have definitely been on BTs end.

Aspiring Contributor
Posts: 10
Registered: ‎01-10-2010
0

Re: PPP link up and down, ADSL steady

Thanks Phandy

 

I read through your posts and the various links and it looks like we may have the same issue.

 

Here's this morning's logs...

 

10:51:57   3 Oct PPP link up (Internet) [109.154.133.177]
10:51:57   3 Oct PPP CHAP Chap receive success : authentication ok
10:51:56   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
10:51:43   3 Oct PPP link down (Internet) [109.152.58.255]
08:56:08   3 Oct PPP link up (Internet) [109.152.58.255]
08:56:07   3 Oct PPP CHAP Chap receive success : authentication ok
08:56:07   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
08:55:53   3 Oct PPP link down (Internet) [109.152.50.62]
06:54:16   3 Oct PPP link up (Internet) [109.152.50.62]
06:54:15   3 Oct PPP CHAP Chap receive success : authentication ok
06:54:15   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
06:54:01   3 Oct PPP link down (Internet) [109.152.50.62]
05:58:33   3 Oct PPP link up (Internet) [109.152.50.62]
05:58:33   3 Oct PPP CHAP Chap receive success : authentication ok
05:58:29   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
05:58:14   3 Oct PPP link down (Internet) [109.152.38.56]
05:10:47   3 Oct PPP link up (Internet) [109.152.38.56]
05:10:43   3 Oct PPP CHAP Chap receive success : authentication ok
05:10:43   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
05:10:30   3 Oct PPP link down (Internet) [109.152.50.131]
02:50:32   3 Oct PPP link up (Internet) [109.152.50.131]
02:50:29   3 Oct PPP CHAP Chap receive success : authentication ok
02:50:29   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
02:50:15   3 Oct PPP link down (Internet) [109.152.75.153]
01:14:24   3 Oct PPP link up (Internet) [109.152.75.153]
01:14:24   3 Oct PPP CHAP Chap receive success : authentication ok
01:14:23   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
01:14:09   3 Oct PPP link down (Internet) [109.152.49.134]
00:53:58   3 Oct PPP link up (Internet) [109.152.49.134]
00:53:57   3 Oct PPP CHAP Chap receive success : authentication ok
00:53:57   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
00:53:43   3 Oct PPP link down (Internet) [109.152.32.82]
00:51:52   3 Oct PPP link up (Internet) [109.152.32.82]
00:51:51   3 Oct PPP CHAP Chap receive success : authentication ok
00:51:51   3 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
00:51:27   3 Oct PPP link down (Internet) [109.152.51.83]
23:19:25   2 Oct PPP link up (Internet) [109.152.51.83]
23:19:25   2 Oct PPP CHAP Chap receive success : authentication ok
23:19:24   2 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
23:19:00   2 Oct PPP link down (Internet) [109.152.54.5]
22:48:58   2 Oct PPP link up (Internet) [109.152.54.5]
22:48:58   2 Oct PPP CHAP Chap receive success : authentication ok
22:48:58   2 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
22:48:55   2 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
22:48:38   2 Oct PPP link down (Internet) [109.152.53.175]
21:56:09   2 Oct PPP link up (Internet) [109.152.53.175]
21:56:06   2 Oct PPP link down (Internet) [109.152.53.175]
21:56:03   2 Oct PPP link up (Internet) [109.152.53.175]
21:56:00   2 Oct PPP CHAP Chap receive success : authentication ok
21:56:00   2 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
21:55:57   2 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
21:55:34   2 Oct PPP link down (Internet) [109.152.33.91]
19:19:43   2 Oct PPP link up (Internet) [109.152.33.91]
19:19:40   2 Oct PPP link down (Internet) [109.152.33.91]
19:19:37   2 Oct PPP link up (Internet) [109.152.33.91]
19:19:34   2 Oct PPP CHAP Chap receive success : authentication ok
19:19:33   2 Oct PPP CHAP Receive challenge (rhost = bras-red5.bs)
19:19:19   2 Oct PPP link down (Internet) [109.152.46.179]

 

At no time did the ADSL go down. It's been up for over 3 days since I last powercycled the HH2.

 

I think I have packet loss too.  When we use any streaming service like the BBC radio or iPlayer it drops out between every 3 minutes and every 15 minutes.  Annoying enough that you can't use the service.

 

I've just tried speedtest.net and get this:

 

[URL=http://www.speedtest.net][IMG]http://www.speedtest.net/result/976308839.png[/IMG][/URL]

 

And this is my line state:

 

 

ADSL line status

Connection information

 

Line stateConnected
Connection time3 days, 16:14:58
Downstream13,242 Kbps
Upstream1,144 Kbps

 

 

ADSL settings

 

VPI/VCI0/38
TypePPPoA
ModulationITU-T G.992.5
Latency typeInterleaved
Noise margin (Down/Up)4.1 dB / 5.6 dB
Line attenuation (Down/Up)32.0 dB / 16.6 dB
Output power (Down/Up)0.0 dBm / 13.0 dBm
Loss of Framing (Local)41
Loss of Signal (Local)4
Loss of Power (Local)0
FEC Errors (Down/Up)7704283 / 0
CRC Errors (Down/Up)397 / 2147480000
HEC Errors (Down/Up)nil / 0
Error Seconds (Local)287

 

I'm on the Falmouth telephone exchange, WWFALM.

 

Does anyone know why the ADSL itself stays up even though the PPP goes up and down?  Could this still be a line noise problem?  Are the FEC/CRC/HEC errors particularly bad?

 

I've not heard back from BT's call centre, they were going to call me but didn't.  Should I call them back?  The adviser I originally spoke to said I shouldn't call back about the problem and I should wait for them...

 

Many thanks again for any help, its much appreciated. 

 

Martin :robothappy:

 

 

 

 

Recognised Expert
Posts: 1,770
Registered: ‎27-05-2010

Re: PPP link up and down, ADSL steady

I think FEC is pretty poor but the crc is a hub bug  and meaningless

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If any post helps tick the star box on the left
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Just cause Im paranoid dont mean they are not out to get me





Aspiring Contributor
Posts: 10
Registered: ‎01-10-2010
0

Re: PPP link up and down, ADSL steady

Thanks Hamish. 

 

This is my result from the BT Speedtester:

 

<script type="text/javascript"></script> <script type="text/javascript"></script> <script type="text/javascript"></script> <script type="text/javascript"></script> <script type="text/javascript"></script>

Home Image not loadedTesting Image not loadedResults Image not loaded
  
FAQ

Results Image not loaded

<script type="text/javascript"></script> Test1 comprises of two tests

1. Best Effort Test: -provides background information.

Download Speed
7124 Kbps
  
0 Kbps21000 Kbps
Max Achievable Speed
 Download speedachieved during the test was - 7124 Kbps
 For your connection, the acceptable range of speedsis 4000-21000 Kbps.
 Additional Information:
 Your DSL Connection Rate :13242 Kbps(DOWN-STREAM), 1144 Kbps(UP-STREAM)
 IP Profile for your line is - 11000 Kbps
The throughput of Best Efforts (BE) classes achieved during the test is - 3.44:46.05:50.51 (SBE:NBE:smileytongue:BE)
These figures represent the ratio while sententiously passing Sub BE, Normal BE and Priority BE marked traffic.

The results of this test will vary depending on the way your ISP has decided to use these traffic classes.

2. Upstream Test: -provides background information.

Upload Speed
82 Kbps
  
0 Kbps1144 Kbps
Max Achievable Speed
>Upload speed achieved during the test was - 82 Kbps
 Additional Information:
 Upstream Rate IP profile on your line is - 1144 Kbps


We were unable to identify any performance problem with your service at this time.
It is possible that any problem you are currently, or had previously experienced may have been caused by traffic congestion on the Internet or by the server you were accessing responding slowly.
If you continue to encounter a problem with a specific server, please contact the administrator of that server in the first instance.

Please visit FAQ section if you are unable To understand the test results.

 
  

 

I've no idea what to do next.  From my little understanding of what's going on, from what I've read in other posts, it looks like the problem as at the BT exchange.  But how can I be sure of that and what can BT do to fix it?

 

Welcome to the world of BT broadband mysteries, I suppose...

 

Thanks again,

 

Martin :robothappy:

 

Aspiring Contributor
Posts: 10
Registered: ‎01-10-2010
0

Re: PPP link up and down, ADSL steady

Oh dear, things don't looks so good on the ping test:

 

http://www.pingtest.net/result/25305053.png

 

OK, so here's my new question:

 

Has anyone who's had similar problems to mine got the problem solved and if so what was done to solve the problem?

 

As always, any help gratefully received.

 

Martin :robothappy:

Aspiring Expert
Posts: 196
Registered: ‎19-07-2010
0

Re: PPP link up and down, ADSL steady

Martin - you could try the following:-

 

ping your router 192.168.1.254

 

then ping the default gateway found in hub manager under advanced/broadband

 

Do these pings from a command prompt and post the results.

 

This is to prove you have packet loss on the link. You would want to do this while you are having the ppp down/up events.

 

Banz

Aspiring Contributor
Posts: 10
Registered: ‎01-10-2010
0

Re: PPP link up and down, ADSL steady

Hi Banz

 

This is what I get from the router:

 

PING 192.168.1.254 (192.168.1.254): 56 data bytes

64 bytes from 192.168.1.254: icmp_seq=0 ttl=64 time=1.010 ms

64 bytes from 192.168.1.254: icmp_seq=1 ttl=64 time=0.820 ms

64 bytes from 192.168.1.254: icmp_seq=2 ttl=64 time=0.587 ms

64 bytes from 192.168.1.254: icmp_seq=3 ttl=64 time=0.716 ms

64 bytes from 192.168.1.254: icmp_seq=4 ttl=64 time=0.696 ms

64 bytes from 192.168.1.254: icmp_seq=5 ttl=64 time=0.984 ms

64 bytes from 192.168.1.254: icmp_seq=6 ttl=64 time=0.667 ms

64 bytes from 192.168.1.254: icmp_seq=7 ttl=64 time=0.724 ms

64 bytes from 192.168.1.254: icmp_seq=8 ttl=64 time=0.808 ms

64 bytes from 192.168.1.254: icmp_seq=9 ttl=64 time=0.779 ms

 

And this is what I get from the gateway:

 

PING 217.32.141.4 (217.32.141.4): 56 data bytes

64 bytes from 217.32.141.4: icmp_seq=0 ttl=254 time=53.449 ms

64 bytes from 217.32.141.4: icmp_seq=1 ttl=254 time=53.187 ms

64 bytes from 217.32.141.4: icmp_seq=2 ttl=254 time=50.627 ms

64 bytes from 217.32.141.4: icmp_seq=3 ttl=254 time=47.132 ms

64 bytes from 217.32.141.4: icmp_seq=4 ttl=254 time=54.509 ms

Request timeout for icmp_seq 5

Request timeout for icmp_seq 6

64 bytes from 217.32.141.4: icmp_seq=7 ttl=254 time=54.153 ms

64 bytes from 217.32.141.4: icmp_seq=8 ttl=254 time=51.960 ms

64 bytes from 217.32.141.4: icmp_seq=9 ttl=254 time=50.467 ms

64 bytes from 217.32.141.4: icmp_seq=10 ttl=254 time=50.751 ms

64 bytes from 217.32.141.4: icmp_seq=11 ttl=254 time=53.207 ms

64 bytes from 217.32.141.4: icmp_seq=12 ttl=254 time=49.017 ms

64 bytes from 217.32.141.4: icmp_seq=13 ttl=254 time=55.890 ms

64 bytes from 217.32.141.4: icmp_seq=14 ttl=254 time=56.365 ms

64 bytes from 217.32.141.4: icmp_seq=15 ttl=254 time=54.669 ms

64 bytes from 217.32.141.4: icmp_seq=16 ttl=254 time=48.231 ms

64 bytes from 217.32.141.4: icmp_seq=17 ttl=254 time=53.596 ms

64 bytes from 217.32.141.4: icmp_seq=18 ttl=254 time=52.848 ms

64 bytes from 217.32.141.4: icmp_seq=19 ttl=254 time=53.898 ms

64 bytes from 217.32.141.4: icmp_seq=20 ttl=254 time=53.602 ms

64 bytes from 217.32.141.4: icmp_seq=21 ttl=254 time=52.241 ms

64 bytes from 217.32.141.4: icmp_seq=22 ttl=254 time=49.170 ms

Request timeout for icmp_seq 23

64 bytes from 217.32.141.4: icmp_seq=24 ttl=254 time=52.029 ms

64 bytes from 217.32.141.4: icmp_seq=25 ttl=254 time=50.838 ms

 

Does the Request timeout mean I'm having packet loss?

 

The results I'm getting from pingtest are crazy, 835ms latency sometimes more, 1566ms jitter:

 

http://www.pingtest.net/result/25306663.png

 

From these results, what do you think?

 

Many thanks,

 

Martin :robothappy:

Aspiring Contributor
Posts: 10
Registered: ‎01-10-2010

Re: PPP link up and down, ADSL steady

Well well well.

This is definitely something up with BT.

Because guess where I live. In Falmouth too.

Where abouts are you? I live down on Bar Lane/Road right down near the Docks entrance.

 

I rung up BT, they admitted a fault and said that they were going to fix it. They didnt ring me yesterday then rung me this morning. They left me a voice message which didnt really allude to whether they had fixed it or not. They just said to ring again if I had any problems. Which sounds like they must have tried to fix something.

 

Im gonna get into contact with BT shortly so Ill mention this.

Thanks dude.

Aspiring Contributor
Posts: 10
Registered: ‎01-10-2010
0

Falmouth WWFALM problems, was Re: PPP link up and down, ADSL steady

[ Edited ]

Aha!!

 

I was getting to the point where I was sure this was a problem in or beyond the exchange, not on the line or in the house.

 

We're at the bottom of Arwenack Avenue, near Grovehill Crescent, not far from you.

 

Cheers,

 

Martin :robothappy: