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[banger]

Strange happenings at 1am on TT Biz line. Service status says Software Update multiple locations and the timeframe seems about right but my DSL has come back up with a 1.6db margin and higher sync of 72. I would have thought a re-sync would have brought back 3db margin and sync of around 68. Any ideas it has been in sync for 248 days, same time as modem uptime. See attached.

Stats recorded 10 Dec 2019 02:36:16

DSLAM type / SW version:   BDCM:0xa4a1 (164.161) / v0xa4a1
Modem/router firmware:     AnnexA version - A2pv6F039v.d26a
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                     1 hour 43 min 28 sec
Resyncs:                   1 (since 09 Dec 2019 10:22:13)
         
            Downstream   Upstream
Line attenuation (dB):     19.7      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   72527      17566
SNR margin (dB):           1.6      4.3
Power (dBm):               12.6      7.6
Interleave depth:          8      1
INP:                       50.00      0
G.INP:                     Enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             0.5224      0.0022
RSUnCorr/RS (%):           0.0000      0.0000
ES/hour:                   4.86      1.22

Also think my line card firmware has been updated.

[Ronski]

If you're attainable speed is lower than your sync speed it's just reconnected quicker than other modems, nothing unusual. It'll sort itself out next resync.

[banger]

If you're attainable speed is lower than your sync speed it's just reconnected quicker than other modems, nothing unusual. It'll sort itself out next resync.

Cheers Ronski, yes the attainable is 67 so next resync it will probably go back down. Shame. 

[Ronski]

It may well stay like it for some time, enjoy it while it lasts.

[tiffy]

Yes, something widespread happened in early hours of this morning, the 3 lines I monitor, RPi's/DSLStats, same exchange, different locations, all had a re-synch at 01:35 this morning.
2 Plusnet 40/10 lines and a BT 80/20 line.

The BT 80/20 line which has always been close to max. US & DS synch. speeds has re-synched at US/DS max.
DS SNRM has changed from 3.2 to 1.4 dB.
US SNRM has changed from 6.0 to 5.2 dB.

The two Plusnet 40/10 (much longer) lines have both increased US synch. speeds slightly, DS synch. speeds have remained the same.
US SNRM has decreased by 2 db. on the 40 kbps synched line and 1 dB. on the 35 kbps synched line.
DS SNRM has decreased marginally on both lines.

[tiffy]

Post DLM re-synch this morning I have had a more detailed look at my stats, Plusnet 40/10 VDSL-2 service on a relatively long line.
My US synch and data speeds are the highest I have ever recorded since the free 2 to 10 upgrade by Plusnet, reflective of the the 2 dB. decrease in US SNRM.

My DS synch speed was already topped out at 40 mbps prior to the DLM re-synch so no room for improvement there.

As an aside, has anyone noticed that the BTw Performance Tester no longer offers the "Further Diagnostics" option, my last test was late November and it was offered then ?
Was still able to obtain my BRAS profiles using "Mouselike.org" with phone number, they had not changed.

I know the BTw Performance Tester is not very well respected on the forum, however, for consistancy I use this with Pale Moon browser accepting that there are issues associated with Firefox (my normal browser) and the BTw tester.   

[adslmax]

My FTTC was down for 20 minutes with no dsl light. Come back on. Check the DSLStats as I can see a change in Dslam type 0xa4a1 below:

DSLAM type / SW version:   BDCM:0xa4a1 (164.161) / v0xa4a1 (before: DSLAM type / SW version:   BDCM:0xa48c (164.140) / v0xa48c)
Modem/router firmware:     AnnexA version - A2pvfbH043q.d26u
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                     0 hour 35 min 43 sec
Resyncs:                   0 (since 11 Dec 2019 00:45:33)
         
            Downstream   Upstream
Line attenuation (dB):     10.6      0.0
Signal attenuation (dB):   Not available on VDSL2      
Connection speed (kbps):   79999      19999
SNR margin (dB):           12.5      18.5
Power (dBm):               12.5      1.0
Interleave depth:          16      1
INP:                       48.00      0
G.INP:                     Enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

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

xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 37335 Kbps, Downstream rate = 112314 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 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):        12.5             18.5
Attn(dB):        10.6            0.0
Pwr(dBm):        12.5            1.0

xdslctl info --pbParams
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 37335 Kbps, Downstream rate = 112314 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
VDSL Port Details               Upstream                Downstream
Attainable Net Data Rate:        37335 kbps             112314 kbps
Actual Aggregate Tx Power:          1.0 dBm                12.5 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   2.1   12.4   20.9   N/A   N/A   5.8   15.3   26.2
Signal Attenuation(dB):   2.1   11.4   20.1   N/A   N/A   8.1   15.2   26.3
        SNR Margin(dB):   18.9   18.6   18.6   N/A   N/A   12.7   12.6   12.6
         TX Power(dBm):   -13.4   -30.1   0.9   N/A   N/A   8.2   7.9   7.0
        kl0(dBx100):    619     660       N/A     N/A     N/A   518     622     687     
ZySH>

xdslctl info --vectoring
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 37335 Kbps, Downstream rate = 112314 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Vectoring state: 5
VCE MAC Address: 0:0:0:0:0:0
Total error samples Ethernet pkts sent: 0
Total error samples Ethernet pkts discarded: 0
Total error samples statuses sent: 0
Total error samples statuses discarded: 0
ZySH>

Downstream      Upstream
General
   rtx_tx             0                  0               
   rtx_c              0                  0               
   rtx_uc             0                  0               
   LEFTRS             0                  0               
   minEFTR            79988              0               
   errFreeBits        3601873            0               
Bearer 0
   RxQueue            60                 0               
   TxQueue            20                 0               
   G.INP Framing      18                 0               
   G.INP Lookback     20                 0               
   RRC Bits           0                  24             
   Interleave depth   16                 1               
   INP                48.00              0.00           
   INPRein            0.00               0.00           
   Delay              0                  0               
Bearer 1
   Interleave depth   3                  0               
   INP                4.00               0.00           
   INPRein            4.00               0.00           
   Delay              3                  0 

1. Downstream Test: -provides background information.

   Download Speed
   76.14 Mbps
    
0 Mbps   77.35 Mbps
Max Achievable Speed

 Download speedachieved during the test was - 76.14 Mbps
 For your connection, the acceptable range of speedsis 40 Mbps-77.35 Mbps .
 Additional Information:
 IP Profile for your line is - 77.35 Mbps

2. Upstream Test: -provides background information.

   Upload Speed
   20.72 Mbps
    
0 Mbps   20 Mbps
Max Achievable Speed

Upload speed achieved during the test was - 20.72Mbps
 Additional Information:
 Upstream Rate IP profile on your line is - 20 Mbps   

[Ronski]

Has you maximum attainable speed go up quite considerably?

Max:    Upstream rate = 37335 Kbps, Downstream rate = 112314 Kbps

Perhaps a major cross talker is offline.

[tubaman]

Looks like it was just a firmware upgrade on the DSLAM.
It would be interesting to know what changes between versions, but I don't suppose such information is in the public domain.
 

[j0hn]

It reports the line card version not a firmware version.
The line cards were more than likely physically swapped.

Check the cabinet for an expansion next time you pass.

[underzone]

Really? Swapped out at 1am in the morning...

[j0hn]

That's the only time they do line card swaps.
They are never done during the day*

Check the forum Search function for DSLAM version changes.
Always done after midnight.

edit: clarified comment above.
*Planned line card swaps always done at night. As is most planned downtime so as to minimise disruption.
A complete failure is repaired ASAP but usually a like for like swap.

[adslmax]

Yep it does changed after midnight see screenshot below

[adslmax]

Check the cabinet for an expansion next time you pass.

Will do

[NewtronStar]

The same happened to me early hours in the morning 1am and the Dslam S/W has changed

Code: [Select]

Stats recorded 11 Dec 2019 17:13:42

DSLAM type / SW version: BDCM:0xa4a1 (164.161) / v0xa4a1
Modem/router firmware:  AnnexA version - A2pv6F039g1.d24m
DSL mode:                VDSL2 Profile 17a
Status:                  Showtime
Uptime:                  16 hours 36 min 13 sec
Resyncs:                0 (since 11 Dec 2019 16:31:39)

Downstream Upstream
Line attenuation (dB):  24.7 0.0
Signal attenuation (dB): Not monitored
Connection speed (kbps): 40000 8178
SNR margin (dB):        4.5 1.8
Power (dBm):            11.2 -0.5
Interleave depth:        16 1
INP:                    45.00 0
G.INP:                  Enabled Not enabled
Vectoring status:        5 (VECT_UNCONFIGURED)

RSCorr/RS (%):          0.0761 0.0000
RSUnCorr/RS (%):        0.0000 0.0000
ES/hour:                2.79 0