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[lewisp8]

About a month ago we had an electrician round to replace some wiring in the kitchen. When he was here, he turned the power on and off a few times and my DLM didn’t like that and my connection speed has gone from 80Mbs to 68Mbs. The biggest problem is the latency, this has gone from 8MS-12MS and now it is above 40MS. I know the DLM works in mysterious ways but surely this should have rectified itself by now?

Stats are below

Stats recorded 10 Apr 2020 21:17:15

DSLAM type / SW version:   BDCM:0xc014 (192.20) / v0xc014
Modem/router firmware:     AnnexA version - A2pv6C038m.d24j
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                     0 hour 15 min 2 sec
Resyncs:                   1 (since 10 Apr 2020 20:48:42)
         
            Downstream   Upstream
Line attenuation (dB):     12.1      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   68243      20000
SNR margin (dB):           6.2      6.1
Power (dBm):               12.4      -3.7
Interleave depth:          1136      1
INP:                       3.00      0
G.INP:                     Not enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             0.0002      0.0000
RSUnCorr/RS (%):           0.0000      0.0000
ES/hour:                   0      2.11

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   0
Last initialization procedure status:   0
Max:   Upstream rate = 20573 Kbps, Downstream rate = 78604 Kbps
Bearer:   0, Upstream rate = 20000 Kbps, Downstream rate = 68243 Kbps

Link Power State:   L0
Mode:         VDSL2 Annex B
VDSL2 Profile:      Profile 17a
TPS-TC:         PTM Mode(0x0)
Trellis:      U:ON /D:ON
Line Status:      No Defect
Training Status:   Showtime
      Down      Up
SNR (dB):    6.2       6.1
Attn(dB):    12.1       0.0
Pwr(dBm):    12.4      -3.7
         VDSL2 framing
         Bearer 0
MSGc:      15      20
B:      60      239
M:      1      1
T:      64      64
R:      14      0
S:      0.0284      0.3819
L:      21096      5028
D:      1136      1
I:      75      120
N:      75      240
         Counters
         Bearer 0
OHF:      680027      152402
OHFErr:      0      1
RS:      130426371      1163180
RSCorr:      201      0
RSUnCorr:   0      0

         Bearer 0
HEC:      0      0
OCD:      0      0
LCD:      0      0
Total Cells:   122274716      0
Data Cells:   134255      0
Drop Cells:   0
Bit Errors:   0      0

ES:      0      1
SES:      0      0
UAS:      27      27
AS:      932

         Bearer 0
INP:      3.00      0.00
INPRein:   0.00      0.00
delay:      8      0
PER:      1.37      6.13
OR:      122.58      33.91
AgR:      68365.26   20033.74

Bitswap:   39/39      44/44

Total time = 15 min 59 sec
FEC:      201      0
CRC:      0      1
ES:      0      1
SES:      0      0
UAS:      27      27
LOS:      0      0
LOF:      0      0
LOM:      0      0
Latest 15 minutes time = 59 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:      201      0
CRC:      0      1
ES:      0      1
SES:      0      0
UAS:      27      27
LOS:      0      0
LOF:      0      0
LOM:      0      0
Latest 1 day time = 15 min 59 sec
FEC:      201      0
CRC:      0      1
ES:      0      1
SES:      0      0
UAS:      27      27
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
Since Link time = 15 min 31 sec
FEC:      201      0
CRC:      0      1
ES:      0      1
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
#
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   0
Last initialization procedure status:   0
Max:   Upstream rate = 20573 Kbps, Downstream rate = 78604 Kbps
Bearer:   0, Upstream rate = 20000 Kbps, Downstream rate = 68243 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2800,3967)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2800,3967)
     VDSL Port Details        Upstream        Downstream
Attainable Net Data Rate:       20573 kbps          78604 kbps
Actual Aggregate Tx Power:      -   3.7 dBm           12.4 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   2.7   11.0   16.4   N/A   N/A   7.5   16.1   25.1
Signal Attenuation(dB):   2.7   13.0   15.9   N/A   N/A   9.1   16.0   25.1
        SNR Margin(dB):   6.2   6.1   6.2   N/A   N/A   6.2   6.2   6.2
         TX Power(dBm):   -17.8   -33.1   -3.9   N/A   N/A   8.1   7.8   7.1
#

[mrk26]

Not necessary, if DLM stuck it may take bit longer. Best and quicker way is to cap line, otherwise you may wait forever.

[Chrysalis]

Error rate looks solid very concerning that its still there after a month.

Actually seems you restarted the modem, so the data you provided is useless, post it again after a few days please.  You been restarting it a lot?

[lewisp8]

Stupid me! It restarted when i went to plug the other lan cable in to the modem to get the stats and accidently pulled the power out. Before that it had been connected for 30 odd days. I'll post again when it's been synced longer.

[Weaver]

That would make sense, if you had been restarting the modem with a brief period of downtime every time, then this could make the DLM deities unhappy. If that is true then the cure is to do absolutely nothing for a week or so; keep your modem running constantly and use it as normal but otherwise ignore it. Then check the sync rates. I’m not sure how long DLM should take to adjust; kitz has probably written up something good in the section of the site concerned with DLM.

[kitz]

Depends if its first offence or not.     First offence should go back to normal after a couple of days stability.   
After that the time scale increases. eg   5 days, 2 weeks, 6 weeks etc.

[j0hn]

The biggest problem is the latency, this has gone from 8MS-12MS and now it is above 40MS.

DLM has only added 8ms latency to your line.
Any additional latency is down to other factors (like your ISP).

I recommend capping the downstream if you really want Interleaving removed.

DLM sometimes never removes Interleaving if your levels aren't low enough.
My line was interleaved nearly a year before I found this forum and applied a cap.
A few days later it was gone.

Who is the ISP? This has a bearing on the number of errors expected before removing Interleaving.

[lewisp8]

DLM has only added 8ms latency to your line.
Any additional latency is down to other factors (like your ISP).

I recommend capping the downstream if you really want Interleaving removed.

DLM sometimes never removes Interleaving if your levels aren't low enough.
My line was interleaved nearly a year before I found this forum and applied a cap.
A few days later it was gone.

Who is the ISP? This has a bearing on the number of errors expected before removing Interleaving.

My ISP is Sky, how would I go about capping my downstream? I can limit WAN throughput in my router in the QOS settings?

[lewisp8]

Hopefully these stats are a bit more useful than the previous ones


Stats recorded 12 Apr 2020 16:25:52

DSLAM type / SW version:   BDCM:0xc014 (192.20) / v0xc014
Modem/router firmware:     AnnexA version - A2pv6C038m.d24j
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                    1 day 19 hours 23 min 45 sec
Resyncs:                   0 (since 11 Apr 2020 17:34:49)
         
            Downstream   Upstream
Line attenuation (dB):     12.1      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   68243      20000
SNR margin (dB):           6.2      6.1
Power (dBm):               12.4      -3.7
Interleave depth:          1136      1
INP:                       3.00      0
G.INP:                     Not enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             0.0588      0.0000
RSUnCorr/RS (%):           0.0000      0.0000
ES/hour:                   0      960
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   0
Last initialization procedure status:   0
Max:   Upstream rate = 20573 Kbps, Downstream rate = 78604 Kbps
Bearer:   0, Upstream rate = 20000 Kbps, Downstream rate = 68243 Kbps

Link Power State:   L0
Mode:         VDSL2 Annex B
VDSL2 Profile:      Profile 17a
TPS-TC:         PTM Mode(0x0)
Trellis:      U:ON /D:ON
Line Status:      No Defect
Training Status:   Showtime
      Down      Up
SNR (dB):    6.2       6.2
Attn(dB):    12.1       0.0
Pwr(dBm):    12.4      -3.7
         VDSL2 framing
         Bearer 0
MSGc:      15      20
B:      60      239
M:      1      1
T:      64      64
R:      14      0
S:      0.0284      0.3819
L:      21096      5028
D:      1136      1
I:      75      120
N:      75      240
         Counters
         Bearer 0
OHF:      114009964      860986
OHFErr:      0      173
RS:      414937860      388951
RSCorr:      241516      0
RSUnCorr:   0      0

         Bearer 0
HEC:      0      0
OCD:      0      0
LCD:      0      0
Total Cells:   3325584235      0
Data Cells:   600764018      0
Drop Cells:   0
Bit Errors:   0      0

ES:      0      163
SES:      0      0
UAS:      27      27
AS:      156255

         Bearer 0
INP:      3.00      0.00
INPRein:   0.00      0.00
delay:      8      0
PER:      1.37      6.13
OR:      122.58      33.91
AgR:      68365.26   20033.74

Bitswap:   63650/63650      192/192

Total time = 1 days 19 hours 24 min 42 sec
FEC:      241516      0
CRC:      0      173
ES:      0      163
SES:      0      0
UAS:      27      27
LOS:      0      0
LOF:      0      0
LOM:      0      0
Latest 15 minutes time = 9 min 42 sec
FEC:      173      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:      307      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 = 19 hours 24 min 42 sec
FEC:      95236      0
CRC:      0      63
ES:      0      59
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Previous 1 day time = 24 hours 0 sec
FEC:      146280      0
CRC:      0      110
ES:      0      104
SES:      0      0
UAS:      27      27
LOS:      0      0
LOF:      0      0
LOM:      0      0
Since Link time = 1 days 19 hours 24 min 15 sec
FEC:      241516      0
CRC:      0      173
ES:      0      163
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
#
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   0
Last initialization procedure status:   0
Max:   Upstream rate = 20573 Kbps, Downstream rate = 78604 Kbps
Bearer:   0, Upstream rate = 20000 Kbps, Downstream rate = 68243 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2800,3967)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2800,3967)
     VDSL Port Details        Upstream        Downstream
Attainable Net Data Rate:       20573 kbps          78604 kbps
Actual Aggregate Tx Power:      -   3.7 dBm           12.4 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   2.7   11.0   16.4   N/A   N/A   7.5   16.1   25.1
Signal Attenuation(dB):   2.7   12.7   15.9   N/A   N/A   9.1   16.0   25.1
        SNR Margin(dB):   6.1   6.1   6.2   N/A   N/A   6.2   6.2   6.2
         TX Power(dBm):   -17.8   -33.1   -3.9   N/A   N/A   8.1   7.8   7.1
#

[burakkucat]

Take a look at les-70's "sticky" post, titled Speed Capping and ES Rates on a Moderately Noisy Line, for details of how to apply DS band capping.

[Chrysalis]

well there is 0 ES there but still low uptime, if thats the longer trend of the line then the only improvement would be a lower FEC as ES is already 0 on the DS.

[lewisp8]

Good news, I capped my line speed as suggested and a week later I'm now on fast path! G.INP doesent seem to be enabled though?

[lewisp8]

Although just checked my error rate has incrased, are theese figures normal?

Stats recorded 18 Apr 2020 19:52:36

DSLAM type / SW version:   BDCM:0xc014 (192.20) / v0xc014
Modem/router firmware:     AnnexA version - A2pv6C038m.d24j
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                     21 hours 45 min 26 sec
Resyncs:                   0 (since 18 Apr 2020 19:43:03)
         
            Downstream   Upstream
Line attenuation (dB):     12.0      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   74126      20000
SNR margin (dB):           6.2      6.2
Power (dBm):               12.4      -3.7
Interleave depth:          1      1
INP:                       0      0
G.INP:                     Not enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             N/A      0.0000
RSUnCorr/RS (%):           N/A      0.0000
ES/hour:                   12.0      6.00


xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   1
Last initialization procedure status:   0
Max:   Upstream rate = 20802 Kbps, Downstream rate = 74124 Kbps
Bearer:   0, Upstream rate = 20000 Kbps, Downstream rate = 74126 Kbps

Link Power State:   L0
Mode:         VDSL2 Annex B
VDSL2 Profile:      Profile 17a
TPS-TC:         PTM Mode(0x0)
Trellis:      U:ON /D:ON
Line Status:      No Defect
Training Status:   Showtime
      Down      Up
SNR (dB):    6.2       6.2
Attn(dB):    12.0       0.0
Pwr(dBm):    12.4      -3.7
         VDSL2 framing
         Bearer 0
MSGc:      18      20
B:      239      239
M:      1      1
T:      22      64
R:      0      0
S:      0.1030      0.3819
L:      18632      5028
D:      1      1
I:      240      120
N:      240      240
         Counters
         Bearer 0
OHF:      45885556      1835891
OHFErr:      463      91
RS:      0      115778
RSCorr:      0      0
RSUnCorr:   0      0

         Bearer 0
HEC:      1589      0
OCD:      84      0
LCD:      84      0
Total Cells:   2570239549      0
Data Cells:   113557980      0
Drop Cells:   0
Bit Errors:   0      0

ES:      680      596
SES:      32      7
UAS:      207      175
AS:      78326

         Bearer 0
INP:      0.00      0.00
INPRein:   0.00      0.00
delay:      0      0
PER:      1.70      6.13
OR:      112.48      33.91
AgR:      74238.00   20033.74

Bitswap:   43191/43191      235/235

Total time = 1 days 22 hours 50 min 56 sec
FEC:      0      0
CRC:      6715      154
ES:      680      596
SES:      32      7
UAS:      207      175
LOS:      3      0
LOF:      22      0
LOM:      0      0
Latest 15 minutes time = 5 min 56 sec
FEC:      0      0
CRC:      1      1
ES:      1      1
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Previous 15 minutes time = 15 min 0 sec
FEC:      0      0
CRC:      10      1
ES:      5      1
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Latest 1 day time = 22 hours 50 min 56 sec
FEC:      0      0
CRC:      6292      94
ES:      355      95
SES:      11      7
UAS:      36      25
LOS:      1      0
LOF:      7      0
LOM:      0      0
Previous 1 day time = 24 hours 0 sec
FEC:      0      0
CRC:      423      60
ES:      310      81
SES:      10      0
UAS:      36      26
LOS:      1      0
LOF:      8      0
LOM:      0      0
Since Link time = 21 hours 45 min 25 sec
FEC:      0      0
CRC:      463      91
ES:      327      86
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
#

[burakkucat]

Although just checked my error rate has incrased, are theese figures normal?

I don't see anything particularly worrying. Things look about right for fastpath without G.Inp, as you have observed.