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[russellhq]

I switched supplier from TalkTalk to Vodafone on Monday, both being an 80/20 package. When the switch happened I noticed a drop in the downstream SNR from 10 to 7 and speed tests (speedtest.net and fast.com) are generally slower now by a drop of around 5-10mbps and my ping has gone up from 16-18ms to 21-23ms. My sync speeds are still the same so it may just be the Vodafone network but hoping someone can take a look at my stats in case I'm missing something.

I did also note my ES numbers have gone down but FEC errors have gone up (that doesn't seem a bad thing from what I've read)


DSLstats

SNR margin


SNRM per band upstream


SNRM per band downstream


Connection speed


Bitloading


CRC errors


ES


SES


FEC errors

Code: [Select]

Stats summary
Stats recorded 19 May 2020 09:14:43

DSLAM type / SW version: IFTN:0xb206 (178.6) / v0xb206
Modem/router firmware:  AnnexA version - A2pv6C038m.d24j
DSL mode:                VDSL2 Profile 17a
Status:                  Showtime
Uptime:                  23 hours 28 min 58 sec
Resyncs:                3 (since 03 May 2020 11:47:40)

Downstream Upstream
Line attenuation (dB):  13.3 0.0
Signal attenuation (dB): Not available on VDSL2
Connection speed (kbps): 79994 20000
SNR margin (dB):        7.2 12.9
Power (dBm):            0.1 0.1
Interleave depth:        1419 1
INP:                    3.00 0
G.INP:                  Not enabled Not enabled
Vectoring status:        5 (VECT_UNCONFIGURED)

RSCorr/RS (%):          0.0001 0.0001
RSUnCorr/RS (%):        0.0000 0.0000
ES/hour:                0 0
Connection stats
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 32151 Kbps, Downstream rate = 96940 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 79994 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): 7.2 12.9
Attn(dB): 13.3 0.0
Pwr(dBm): 0.1 0.1
VDSL2 framing
Bearer 0
MSGc: 18 150
B: 55 236
M: 1 1
T: 64 5
R: 14 16
S: 0.0223 0.3771
L: 25152 5410
D: 1419 1
I: 70 255
N: 70 255
Counters
Bearer 0
OHF: 78792814 106293
OHFErr: 0 0
RS: 2243141121 3332140
RSCorr: 2961 4
RSUnCorr: 0 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 120108682 0
Data Cells: 1507865988 0
Drop Cells: 0
Bit Errors: 0 0

ES: 0 0
SES: 0 0
UAS: 26 26
AS: 84538

Bearer 0
INP: 3.00 0.00
INPRein: 0.00 0.00
delay: 8 0
PER: 1.07 6.15
OR: 178.95 202.87
AgR: 80173.22 20203.27

Bitswap: 16277/16277 0/0

Total time = 23 hours 29 min 24 sec
FEC: 2961 4
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 26 26
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 14 min 24 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: 1 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 = 23 hours 29 min 24 sec
FEC: 2961 4
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 26 26
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 = 23 hours 28 min 57 sec
FEC: 2961 4
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#


[ktz392837]

Changing provider results in a DLM reset meaning even though you have full sync you have interleaving enabled.  This should be removed within a few days and may account for a bit of throughput loss as its being used for error correction rather than throughput.  Wouldn't have thought it would account for as much difference as you are experiencing though.  I have heard that Vodafone may not be the best contention wise though so that may explain any difference after interleaving is removed.  I am sure someone with more knowledge will correct above if wrong

[russellhq]

Thanks! I'll keep an eye on it this week and see if anything changes.

[ktz392837]

Interleave Depth=1 and INP=0 is what you need to look out for.  I can also tell on my line when the FEC graph doesn't have any red lines is a good sign of no interleaving.  Also assuming standard ECI cabinet not on the Ginp trial as not sure if these observations change if Ginp is enabled (bearer 1 will be listed if this is the case).  Stating the obvious but do not resync manually just leave it alone hopefully after 3+ days you will notice it has reset overnight and interleaving will be gone.

[russellhq]

Looks like things changed last night when the line resynced at 23:47 and I'm off interleving. speedtest.net and fast.com seem to be giving higher results and ping seems to be lower too.

DSLstats

SNR margin


SNRM per band upstream


SNRM per band downstream


Connection speed


Bitloading


CRC errors


ES


SES


FEC errors

Code: [Select]

Stats summary
Stats recorded 21 May 2020 08:26:43

DSLAM type / SW version: IFTN:0xb206 (178.6) / v0xb206
Modem/router firmware:  AnnexA version - A2pv6C038m.d24j
DSL mode:                VDSL2 Profile 17a
Status:                  Showtime
Uptime:                  6 hours 42 min 17 sec
Resyncs:                4 (since 03 May 2020 11:47:40)

Downstream Upstream
Line attenuation (dB):  13.3 0.0
Signal attenuation (dB): Not available on VDSL2
Connection speed (kbps): 79987 20000
SNR margin (dB):        9.8 13.0
Power (dBm):            0.1 0.1
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:                0.59 0
Connection stats
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 32316 Kbps, Downstream rate = 92896 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 79987 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): 9.8 13.0
Attn(dB): 13.3 0.0
Pwr(dBm): 0.1 0.1
VDSL2 framing
Bearer 0
MSGc: 18 150
B: 239 236
M: 1 1
T: 23 5
R: 0 16
S: 0.0955 0.3771
L: 20104 5410
D: 1 1
I: 240 255
N: 240 255
Counters
Bearer 0
OHF: 14593661 1201616
OHFErr: 5 0
RS: 0 2619361
RSCorr: 0 0
RSUnCorr: 0 0

Bearer 0
HEC: 1 0
OCD: 0 0
LCD: 0 0
Total Cells: 3710918320 0
Data Cells: 20273486 0
Drop Cells: 0
Bit Errors: 0 0

ES: 16 0
SES: 11 0
UAS: 62 51
AS: 24137

Bearer 0
INP: 0.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 1.65 6.15
OR: 116.09 202.87
AgR: 80103.09 20203.27

Bitswap: 4545/4546 0/0

Total time = 1 days 22 hours 41 min 25 sec
FEC: 0 0
CRC: 5 0
ES: 16 0
SES: 11 0
UAS: 62 51
LOS: 1 0
LOF: 10 0
LOM: 0 0
Latest 15 minutes time = 11 min 25 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: 0 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 = 22 hours 41 min 25 sec
FEC: 0 0
CRC: 5 0
ES: 16 0
SES: 11 0
UAS: 36 25
LOS: 1 0
LOF: 10 0
LOM: 0 0
Previous 1 day time = 24 hours 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 = 6 hours 42 min 17 sec
FEC: 0 0
CRC: 5 0
ES: 5 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#


[ktz392837]

Yes agree.  Your sync is now running as good/fast as it possibly can