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Author Topic: Waiting to talk again with BT about banding / capping  (Read 328 times)

Silverback

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  • Posts: 25
Waiting to talk again with BT about banding / capping
« on: February 14, 2020, 03:12:33 PM »

Hey :)

It's a long story but I'm waiting to got back to BT to discuss DLM capping.

I've had an unlocked HG612 in for about ten days now  I was thinking I would wait 14 days before going back and annoying BT again

Here are my stats.  Things look much better with the 612 than with draytek (on previous modem code).

I just wonder if anybody has any additional insights on my stats.

Cheers :)

Connection stats
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   1
Last initialization procedure status:   0
Max:   Upstream rate = 16002 Kbps, Downstream rate = 58520 Kbps
Bearer:   0, Upstream rate = 12000 Kbps, Downstream rate = 48997 Kbps
Bearer:   1, Upstream rate = 0 Kbps, Downstream rate = 0 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):   9.4   8.8
Attn(dB):   19.0   0.0
Pwr(dBm):   13.3   7.4
   VDSL2 framing
   Bearer 0
MSGc:   -6   -6
B:   195   163
M:   1   1
T:   0   0
R:   12   16
S:   0.1269   0.4317
L:   13117   3336
D:   4   2
I:   208   180
N:   208   180
Q:   4   2
V:   2   1
RxQueue:   135   57
TxQueue:   27   19
G.INP Framing:   18   18
G.INP lookback:   27   19
RRC bits:   24   24
   Bearer 1
MSGc:   122   58
B:   0   0
M:   2   2
T:   2   2
R:   16   16
S:   8.0000   16.0000
L:   32   16
D:   1   1
I:   32   32
N:   32   32
Q:   0   0
V:   0   0
RxQueue:   0   0
TxQueue:   0   0
G.INP Framing:   0   0
G.INP lookback:   0   0
RRC bits:   0   0
   Counters
   Bearer 0
OHF:   0   0
OHFErr:   5   15
RS:   2896286680   390215
RSCorr:   17746   12906
RSUnCorr:   0   0
   Bearer 1
OHF:   56820855   421338
OHFErr:   0   0
RS:   454566350   544502
RSCorr:   35   968
RSUnCorr:   0   0

   Retransmit Counters
rtx_tx:   1211358   3958
rtx_c:   3859   22634
rtx_uc:   21110   1579948

   G.INP Counters
LEFTRS:   13   412
minEFTR:   48992   11998
errFreeBits:   725393235   629271062

   Bearer 0
HEC:   0   0
OCD:   0   0
LCD:   0   0
Total Cells:   98898913   0
Data Cells:   1351885292   0
Drop Cells:   0
Bit Errors:   0   0

   Bearer 1
HEC:   0   0
OCD:   0   0
LCD:   0   0
Total Cells:   0   0
Data Cells:   0   0
Drop Cells:   0
Bit Errors:   0   0

ES:   12   71
SES:   11   0
UAS:   86   75
AS:   912712

   Bearer 0
INP:   54.00   48.00
INPRein:   1.00   0.00
delay:   0   0
PER:   0.00   0.00
OR:   0.01   0.01
AgR:   49248.62   12110.55

   Bearer 1
INP:   2.00   4.00
INPRein:   2.00   4.00
delay:   0   0
PER:   16.06   16.06
OR:   63.75   31.87
AgR:   63.75   31.87

Bitswap:   238215/238215   3201/3206

Total time = 1 days 21 hours 33 min 49 sec
FEC:   19883   13170
CRC:   563   99
ES:   12   71
SES:   11   0
UAS:   86   75
LOS:   1   0
LOF:   8   0
LOM:   0   0
Latest 15 minutes time = 3 min 49 sec
FEC:   0   5
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:   0   12
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 = 21 hours 33 min 49 sec
FEC:   1050   1011
CRC:   0   5
ES:   0   1
SES:   0   0
UAS:   0   0
LOS:   0   0
LOF:   0   0
LOM:   0   0
Previous 1 day time = 24 hours 0 sec
FEC:   1786   1527
CRC:   0   0
ES:   0   0
SES:   0   0
UAS:   0   0
LOS:   0   0
LOF:   0   0
LOM:   0   0
Since Link time = 10 days 13 hours 31 min 51 sec
FEC:   17746   12906
CRC:   5   15
ES:   1   3
SES:   0   0
UAS:   0   0
LOS:   0   0
LOF:   0   0
LOM:   0   0


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burakkucat

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  • Posts: 28581
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    • The ELRepo Project
Re: Waiting to talk again with BT about banding / capping
« Reply #1 on: February 14, 2020, 05:10:10 PM »

. . .
Max:   Upstream rate = 16002 Kbps, Downstream rate = 58520 Kbps
Bearer:   0, Upstream rate = 12000 Kbps, Downstream rate = 48997 Kbps
Bearer:   1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
 . . .
  Down   Up
SNR (dB):   9.4   8.8
 . . .

I will leave in-depth analysis to others . . . but the above is fairly good confirmation that the circuit is currently banded.
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Silverback

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  • Posts: 25
Re: Waiting to talk again with BT about banding / capping
« Reply #2 on: February 15, 2020, 12:11:55 AM »

Yup but how do I convince BT to request that OpenReach  reset the DLM profile...?
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Silverback

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  • Posts: 25
Re: Waiting to talk again with BT about banding / capping
« Reply #3 on: February 22, 2020, 12:24:30 PM »

So... it looks to me that the DLM turned on DL G.INP last night and interleaving to 1 on UL

(I notice the UL INP is now 0 from 48.00 I guess this is just an 'artifact'?)

SNRM has dropped a little on the DL and a little more on the UL bit now I'm seeing a few CRC and ES on UL?

U0 SNRM seems more variable...

The line stats go bad at first but have settled.

Banding still in place.

Any comments / deeper insights most welcome.

-------------

Connection stats
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   1
Last initialization procedure status:   0
Max:   Upstream rate = 13893 Kbps, Downstream rate = 58188 Kbps
Bearer:   0, Upstream rate = 11999 Kbps, Downstream rate = 49000 Kbps
Bearer:   1, Upstream rate = 0 Kbps, Downstream rate = 0 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):    9.6       7.6
Attn(dB):    19.0       0.0
Pwr(dBm):    13.2       7.5
         VDSL2 framing
         Bearer 0
MSGc:      -6      58
B:      178      236
M:      1      1
T:      0      27
R:      10      16
S:      0.1163      0.6291
L:      13003      3230
D:      16      1
I:      189      127
N:      189      254
Q:      16      0
V:      2      0
RxQueue:      27      0
TxQueue:      9      0
G.INP Framing:   18      0
G.INP lookback:   9      0
RRC bits:      0      24
         Bearer 1
MSGc:      122      -6
B:      0      0
M:      2      0
T:      2      0
R:      16      0
S:      8.0000   0.0000
L:      32      0
D:      1      0
I:      32      0
N:      32      0
Q:      0      0
V:      0      0
RxQueue:      0      0
TxQueue:      0      0
G.INP Framing:      0      0
G.INP lookback:      0      0
RRC bits:      0      0
         Counters
         Bearer 0
OHF:      0      440249
OHFErr:      0      40
RS:      1277833536      886423
RSCorr:      523      136
RSUnCorr:   0      0
         Bearer 1
OHF:   2321743        0
OHFErr:      0      0
RS:        18573447    0
RSCorr:      1      0
RSUnCorr:   0      0

         Retransmit Counters
rtx_tx:      1215922      6536
rtx_c:      6416      25136
rtx_uc:      94921      1579948

         G.INP Counters
LEFTRS:      23      416
minEFTR:   49005      11998
errFreeBits:   2424527988      747836074

         Bearer 0
HEC:      0      0
OCD:      0      0
LCD:      0      0
Total Cells:   3514090357      0
Data Cells:   4682119      0
Drop Cells:   0
Bit Errors:   0      0

         Bearer 1
HEC:      0      0
OCD:      0      0
LCD:      0      0
Total Cells:   0      0
Data Cells:   0      0
Drop Cells:   0
Bit Errors:   0      0

ES:              23      108
SES:      22      0
UAS:      119      97
AS:              37294

         Bearer 0
INP:             48.00      0.00
INPRein:           0.00      0.00
delay:      0              0
PER:      0.00      8.52
OR:              0.01      60.05
AgR:      49068.36   12059.03

         Bearer 1
INP:              2.00   0.00
INPRein:           2.00.       0.00
delay:      0      0
PER:      16.06   0.01
OR:              63.75   0.01
AgR:      63.75   0.01

Bitswap:   13390/13390      133/133

Total time = 1 days 19 hours 54 min 34 sec
FEC:      32149   21313
CRC:      1114   139
ES:              23      108
SES:      22      0
UAS:      119      97
LOS:      2      0
LOF:      17      0
LOM:      0      0
Latest 15 minutes time = 9 min 34 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:      13      5
CRC:      0      1
ES:              0      1
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Latest 1 day time = 19 hours 54 min 34 sec
FEC:      1508   414
CRC:      551      40
ES:              11      37
SES:      11      0
UAS:      33      22
LOS:      1      0
LOF:      9      0
LOM:      0      0
Previous 1 day time = 24 hours 0 sec
FEC:      1074   1010
CRC:      0      0
ES:              0      0
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Since Link time = 10 hours 21 min 33 sec
FEC:      523      136
CRC:      0      40
ES:              0      37
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
#



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Silverback

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Re: Waiting to talk again with BT about banding / capping
« Reply #4 on: February 22, 2020, 01:12:22 PM »

Retain Reason 1 (RDI Detection) - Remote Defect Indication Detector in concert with G.INP activation....

Me no understandy...?
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j0hn

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Re: Waiting to talk again with BT about banding / capping
« Reply #5 on: February 22, 2020, 02:10:33 PM »

It was DLM removing upstream G.INP which was on previously in the stats above.

DLM also changed the downstream from Retx High to Retx Low.

Banding still the same.
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Plusnet FTTC 80/20 -  ECI now Huawei cab
retx low @ 3dB target SNRM
Zyxel VMG1312-B10A bridged with 1508 MTU + Asus RT-AC68U running Asuswrt-Merlin

Silverback

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Re: Waiting to talk again with BT about banding / capping
« Reply #6 on: February 22, 2020, 03:24:14 PM »

Thanks.

Oh, I had it in my mind G.INP was only ever downstream with BT/ OpenReach, so I was ignoring it on upstream stats. Clearly a mistake on my part.

Thanks for the Retx info. Are you picking that up from Bearer 0 - INPRein going from 1 to 0?

Any idea what INP 54.00 is?

I think my lacancy may have dropped by about 5ms...
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j0hn

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Re: Waiting to talk again with BT about banding / capping
« Reply #7 on: February 22, 2020, 06:17:08 PM »

Bearer 0, INPRein 0 is Retx Low
Bearer 0, INPRein 1 is Retx High

Upstream Retx is disabled by default and only enabled if the DLM thinks it's necessary. High upstream ES for example.

The fact DLM removed upstream Retx and also dropped the line from downstream Retx High to Low suggests the line is performing better than it was.
Logged
Plusnet FTTC 80/20 -  ECI now Huawei cab
retx low @ 3dB target SNRM
Zyxel VMG1312-B10A bridged with 1508 MTU + Asus RT-AC68U running Asuswrt-Merlin
 

anything