cancel
Showing results for 
Search instead for 
Did you mean: 

ADSL dropping every 30 minutes?

aj007
Grafter
Posts: 114
Thanks: 4
Registered: 19-12-2012

ADSL dropping every 30 minutes?

Hi there. Been having some major router issues since last week with things going boom etc Smiley I've just swapped our main router from a TP Link W8970 to a Zyxel VGM8324 today. Our sync speed has dropped - I guess that makes sense with all of the issues over the last few days.
What I'm a bit confused about is that the new router stats make it seem as if our ADSL link is dropping and reconnecting every 30 minutes or so. Is there any way I can confirm this because I haven't noticed any issues since swapping I think!
54 REPLIES
cedlor
Grafter
Posts: 687
Thanks: 2
Registered: 02-04-2015

Re: ADSL dropping every 30 minutes?

Maybe post the stats  if you have them or take some now then  again after an hour and let us see?

Maybe try this - is that your router mentioned in the list ( may be similar and work anyway)
http://www.s446074245.websitehome.co.uk/routers.html
aj007
Grafter
Posts: 114
Thanks: 4
Registered: 19-12-2012

Re: ADSL dropping every 30 minutes?

These are the stats from the router itself, I'll give DSLStats a lookie tomorrow when I'm actually with it Smiley Just on a side note, router was installed in the morning (can't remember when) but again the connection dropped, once at 1.20pm and once at 7.45pm. I disconnected the rest of my home network for now to isolate the router, see if the problems stop. I don't have the stats from then but they looked very similar to those above in terms of errors over a similar time period (approx 4 hours). Also, I've noticed the SNRM has jumped from 6 to 9dB - but again, not really suprising given the repeated issues over the last few days.

============================================================================
   ADSL Training Status:   Showtime
                   Mode:   ADSL2+
           Traffic Type:   ATM Mode
            Link Uptime:   0 day: 4 hours: 15 minutes
============================================================================
      ADSL Port Details       Upstream         Downstream
              Line Rate:      0.895 Mbps       13.397 Mbps
   Actual Net Data Rate:      0.888 Mbps       13.365 Mbps
         Trellis Coding:         ON                ON
             SNR Margin:       14.4 dB            9.4 dB
           Actual Delay:          8 ms              8 ms
         Transmit Power:       12.1 dBm           0.0 dBm
          Receive Power:        4.7 dBm           4.7 dBm
             Actual INP:        2.0 symbols       1.0 symbols
      Total Attenuation:        0.0 dB            0.0 dB
Attainable Net Data Rate:      0.888 Mbps       14.556 Mbps
============================================================================
           ADSL Counters
          Downstream        Upstream
Since Link time = 15 min 47 sec
FEC: 226 3
CRC: 1 0
ES: 1 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 1 min 42 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 9 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 4 hours 16 min 42 sec
FEC: 226 3
CRC: 1 0
ES: 1 0
SES: 0 0
UAS: 54 54
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 0 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Total time = 4 hours 16 min 42 sec
FEC: 226 3
CRC: 1 0
ES: 1 0
SES: 0 0
UAS: 54 54
LOS: 0 0
LOF: 0 0
LOM: 0 0
============================================================================
Using these settings to connect to PN
WAN Configuration
Active
Name Broadband
Type ADSL over ATM
Mode Routing
Encapsulation PPPoA
IPv6/IPv4 Mode IPv6/IPv4 DualStack
ATM PVC Configuration
VPI [0-255] 0
VCI [32-65535] 38
DSL Link Type PPPoA
Encapsulation Mode VC/MUX
Service Category UBR Without PCR
PPP Information
PPP Username xxxxx@plusdsl.net
PPP Password xxxxxxx
PPP Trigger Type Auto Connect
IDLE Timeout [minutes] 5
IP Address
Obtain an IP Address Automatically Yes
Static IP No
IP Address N/A
Subnet Mask N/A
Gateway IP Address N/A
Routing Feature
NAT Enable Yes
Fullcone NAT Enable No
IGMP Proxy Yes
Apply as Default Gateway Yes
DNS Server
DNS Dynamic
DNS Server 1 N/A
DNS Server 2 N/A
IPv6 Address
IPv6 Address Automatic
Get IPv6 Address From DHCPv6 Server(IA_NA) No
Prefix Delegation(IA_PD) No
IPv6 Routing Feature
MLD Proxy Enable No
Apply as Default Gateway Yes
IPv6 DNS Server
IPv6 DNS Dynamic
IPv6 DNS Server 1 N/A
IPv6 DNS Server 2 N/A
QoS
Rate limit N/A
WAN Outgoing Default Tag DIsable
DSCP [0-63] N/A
MTU [68-1492] 1492
Bridge and Routing mode in the same WAN
Enable Con-current WAN No
============================================================================

                 
Plusnet Help Team
Plusnet Help Team
Posts: 5,601
Thanks: 530
Fixes: 203
Registered: 01-01-2012

Re: ADSL dropping every 30 minutes?

It doesn't look too pretty from here.

Our tests aren't showing any issues.
I'd recommend raising it to us here.
https://faults.plus.net
If this post resolved your issue please click the 'This fixed my problem' button
 Matthew Wheeler
 Plusnet Help Team
cedlor
Grafter
Posts: 687
Thanks: 2
Registered: 02-04-2015

Re: ADSL dropping every 30 minutes?

Thanks Matt
Wow - you did give a hammering on saturday but not too bad since (not every half hour??)
Not sure all your settings are correct  maybe look at the IPv6 bits in case there is a conflict
Here is a FIBRE set up but may help as that is  for IPv4 setup  as well
http://www.kitz.co.uk/routers/zyxel_VMG8324-B10A_vdsl_setup.htm
aj007
Grafter
Posts: 114
Thanks: 4
Registered: 19-12-2012

Re: ADSL dropping every 30 minutes?

Stats from today
============================================================================
    ADSL Training Status:  Showtime
                    Mode:  ADSL2+
            Traffic Type:  ATM Mode
            Link Uptime:  0 day: 17 hours: 31 minutes
============================================================================
      ADSL Port Details      Upstream        Downstream
              Line Rate:      0.895 Mbps      13.397 Mbps
    Actual Net Data Rate:      0.888 Mbps      13.365 Mbps
          Trellis Coding:        ON                ON
              SNR Margin:      14.4 dB            9.3 dB
            Actual Delay:          8 ms              8 ms
          Transmit Power:      12.1 dBm          0.0 dBm
          Receive Power:        4.7 dBm          4.7 dBm
              Actual INP:        2.0 symbols      1.0 symbols
      Total Attenuation:        0.0 dB            0.0 dB
Attainable Net Data Rate:      0.888 Mbps      14.456 Mbps
============================================================================
            ADSL Counters
          Downstream        Upstream
Since Link time = 31 min 13 sec
FEC: 1101 3
CRC: 1 0
ES: 1 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 2 min 8 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 49 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 17 hours 32 min 8 sec
FEC: 1101 3
CRC: 1 0
ES: 1 0
SES: 0 0
UAS: 54 54
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 0 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Total time = 17 hours 32 min 8 sec
FEC: 1101 3
CRC: 1 0
ES: 1 0
SES: 0 0
UAS: 54 54
LOS: 0 0
LOF: 0 0
LOM: 0 0
============================================================================
I think I may have isolated the fauly. I had a 582n in use as an access point. I disconnected it from the network with this router at 7.45pm yesterday and no drops yet. So either it's that, or could a bad cat 5e cause bad enough issues to drop connection completely?
I might hold off on raising a fault just yet, I'll keep you posted on how it goes over the next few days.
Community Veteran
Posts: 5,164
Thanks: 478
Fixes: 20
Registered: 10-06-2010

Re: ADSL dropping every 30 minutes?

Quote from: aj007
            Link Uptime:   0 day: 4 hours: 15 minutes
Since Link time = 15 min 47 sec

Quote from: aj007
            Link Uptime:  0 day: 17 hours: 31 minutes
            ADSL Counters
Since Link time = 31 min 13 sec

I suspect it's just not printing all values for the "Since Link time" under the "ADSL Counters" section. It only seems to be printing only the minutes and seconds. But the FEC counts since link time are the same as for the total time (in these particular instances).
aj007
Grafter
Posts: 114
Thanks: 4
Registered: 19-12-2012

Re: ADSL dropping every 30 minutes?

Quote from: ejs
Quote from: aj007
            Link Uptime:   0 day: 4 hours: 15 minutes
Since Link time = 15 min 47 sec

Quote from: aj007
             Link Uptime:   0 day: 17 hours: 31 minutes
            ADSL Counters
Since Link time = 31 min 13 sec

I suspect it's just not printing all values for the "Since Link time" under the "ADSL Counters" section. It only seems to be printing only the minutes and seconds. But the FEC counts since link time are the same as for the total time (in these particular instances).

Excellent, thanks mate Smiley
aj007
Grafter
Posts: 114
Thanks: 4
Registered: 19-12-2012

Re: ADSL dropping every 30 minutes?

Well, at least that's 24 hours done on what seemed like a solid connection. Anyone seen anything of note on the stats?
============================================================================
   ADSL Training Status:   Showtime
                   Mode:   ADSL2+
           Traffic Type:   ATM Mode
            Link Uptime:   1 day: 0 hour: 28 minutes
============================================================================
      ADSL Port Details       Upstream         Downstream
              Line Rate:      0.895 Mbps       13.397 Mbps
   Actual Net Data Rate:      0.888 Mbps       13.365 Mbps
         Trellis Coding:         ON                ON
             SNR Margin:       14.5 dB            9.2 dB
           Actual Delay:          8 ms              8 ms
         Transmit Power:       12.1 dBm           0.0 dBm
          Receive Power:        4.7 dBm           4.7 dBm
             Actual INP:        2.0 symbols       1.0 symbols
      Total Attenuation:        0.0 dB            0.0 dB
Attainable Net Data Rate:      0.888 Mbps       14.404 Mbps
============================================================================
           ADSL Counters
          Downstream        Upstream
Since Link time = 28 min 27 sec
FEC: 2588 566
CRC: 1 2
ES: 1 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 14 min 23 sec
FEC: 1 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 112 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 29 min 23 sec
FEC: 113 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 2475 566
CRC: 1 2
ES: 1 1
SES: 0 0
UAS: 54 54
LOS: 0 0
LOF: 0 0
LOM: 0 0
Total time = 1 days 29 min 23 sec
FEC: 2588 566
CRC: 1 2
ES: 1 1
SES: 0 0
UAS: 54 54
LOS: 0 0
LOF: 0 0
LOM: 0 0
============================================================================
cedlor
Grafter
Posts: 687
Thanks: 2
Registered: 02-04-2015

Re: ADSL dropping every 30 minutes?

The SNR margins may be a bit high, probably due to the many disconnects.
This may take a day or two to get back, maybe PN can intervene and reduce them
but they like to see a period of stability first.  I personally would leave it until the weekend
and if no improvement try a resync during the day around 14.00    2pm  but not after 7pm.
Others who understand the stats better may a different view.
Funnukly enough I did a search on your 888 upload spead and your post from 2 years ago came up.
Community Veteran
Posts: 19,101
Thanks: 443
Fixes: 21
Registered: 31-08-2007

Re: ADSL dropping every 30 minutes?

Once your connection is stable the maybe one of the Plusnet CRT could do an SNR reset for you with an uncapped upstream. At present it looks as though your DS target is 9dB and the Upstream looks banded. If the errors are too high then Interleaving will get applied which will increase your lag (ping), so if you are a gamer you will want it turned off.
Strange that those stats aren't returning the Attenuation - can't deduce what sync speed you might be able to achieve.
How exactly did you have the 582n connected as an AP? It might be best to resolve that issue before an SNR Reset so as to avoid upsetting DLM after the reset.
aj007
Grafter
Posts: 114
Thanks: 4
Registered: 19-12-2012

Re: ADSL dropping every 30 minutes?

Strange. Never got around to running DSL stats, I'll give it a run tomorrow. I think we were previously at 15550/888, PN staff probably have a better idea than me.
So I've got two cat 5e cables running from my modem router to the attic. One terminates there into a ZyXEL 16 port switch, the other continues to the other side of our house plugging into the first ethernet port of the 582n. I set it up by disabling IPv4 and IPv6 DHCP.
Anyway, since it's been disconnected on late Tuesday night, the router doesn't report any drops, nor have I noticed any. I'm not planning on reusing the uselss 582n which is now confined to electronic recycling Smiley I'll test the run of cable that was supplying it but in all likelihood, I'll tear it out and replace it with a new run just to be safe.
Community Veteran
Posts: 19,101
Thanks: 443
Fixes: 21
Registered: 31-08-2007

Re: ADSL dropping every 30 minutes?

If your 582n is still configured as an ADSL modem/router, it may be grumbling for some reason connecting the way you are. Some users have loaded theirs with the 10.2.5.2 Firmware (even if it hasn't got the USB port) and configured it as a Fibre Router, you'd connect your ethernet cable to port 4 and disable DHCP as you did before.
aj007
Grafter
Posts: 114
Thanks: 4
Registered: 19-12-2012

Re: ADSL dropping every 30 minutes?

Thanks, I might give it a shot in later this week, don't want to upset the connection again Wink
Another update, here are the stats from DSLStats:
============================================================================
Stats recorded 20 Aug 2015 12:55:05
DSLAM/MSAN type:         IFTN:0x71c8 / v0x71c8
Modem/router firmware:   AnnexA version - A2pv6F039i.d24e
DSL mode:               ADSL2+
Status:                 Showtime
Uptime:                 1 day 17 hours 13 min 23 sec
Resyncs:                 0 (since 20 Aug 2015 12:51:33)

Downstream Upstream
Line attenuation (dB):   23.5 12.7
Signal attenuation (dB): Not monitored
Connection speed (kbps): 13365 888
SNR margin (dB):         9.2 14.4
Power (dBm):             0.0 12.1
Interleave depth:       64 8
INP:                     1.00 2.00
G.INP:                   Not enabled
RSCorr/RS (%):           0.0003 0.0284
RSUnCorr/RS (%):         0.0000 0.0000
ES/hour:                 0 0
============================================================================
And pulled these from telnet
adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    8000
Last initialization procedure status:   0
Max:    Upstream rate = 888 Kbps, Downstream rate = 14444 Kbps
Bearer: 0, Upstream rate = 888 Kbps, Downstream rate = 13365 Kbps
Link Power State:       L0
Mode:                   ADSL2+
TPS-TC:                 ATM Mode
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
               Down            Up
SNR (dB):        9.2             14.4
Attn(dB):        23.5            12.7
Pwr(dBm):        0.0             12.1
                       ADSL2 framing
                       Bearer 0
MSGc:           59              10
B:              206             13
M:              1               8
T:              2               9
R:              14              16
S:              0.4944          4.0000
L:              3576            256
D:              64              8
                       Counters
                       Bearer 0
SF:             9233243         788075
SFErr:          2               2
RS:             1200321343              2374198
RSCorr:         4054            675
RSUnCorr:       2               0
                       Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    381755717               310497259
Data Cells:     337456328               20819672
Drop Cells:     0
Bit Errors:     100             113
ES:             2               1
SES:            0               0
UAS:            54              54
AS:             148404
                       Bearer 0
INP:            1.00            2.00
INPRein:        0.00            0.00
delay:          8               8
PER:            16.06           18.00
OR:             32.36           7.11
AgR:            13345.73        892.51
Bitswap:        216/216         5/5
Total time = 1 days 17 hours 14 min 18 sec
FEC:            4054            675
CRC:            2               2
ES:             2               1
SES:            0               0
UAS:            54              54
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 14 min 18 sec
FEC:            111             102
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            414             0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 17 hours 14 min 18 sec
FEC:            1579            109
CRC:            1               0
ES:             1               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 24 hours 0 sec
FEC:            2475            566
CRC:            1               2
ES:             1               1
SES:            0               0
UAS:            54              54
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 1 days 17 hours 13 min 23 sec
FEC:            4054            675
CRC:            2               2
ES:             2               1
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
============================================================================
Out of interest, how does PN determine the line speed? I just ask because I've been posting on kitz about some other networking stuff and came across the max speed calculator tool
Community Veteran
Posts: 19,101
Thanks: 443
Fixes: 21
Registered: 31-08-2007

Re: ADSL dropping every 30 minutes?

Well if those error figures are to be believed at the current speeds, that's pretty good to say the least. But with your line attenuation you should be able to do far better with sync speed (unless you are unlucky to have a poor quality aluminium line), so something is not helping even considering the current Target SNRM - maybe a check on wiring etc. might be an idea.
Do you have a Master Socket similar to the one on the left?
Do you have any extension phone sockets, and what is normally plugged in where? Are you using any plug-in extension phone/router leads?
Do all your Microfilters look similar to this?