Netgear D7000 VDSL modem/router

michty_me · 6 Nov 2015 at 19:21

Unless I'm mistaken, my stats look pretty poor. But maybe that will change over the coming weeks.

Code:

# xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 15441 Kbps, Downstream rate = 60734 Kbps
Bearer: 0, Upstream rate = 15393 Kbps, Downstream rate = 64063 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):        4.7             6.1
Attn(dB):        17.8            0.0
Pwr(dBm):        13.4            6.8

                        VDSL2 framing
                        Bearer 0
MSGc:           18              14
B:              239             238
M:              1               1
T:              21              14
R:              0               16
S:              0.1192          0.4942
L:              16104           4128
D:              1               1
I:              240             255
N:              240             255

                        Counters
                        Bearer 0
OHF:            89989574                269874
OHFErr:         13206           4
RS:             0               2964680
RSCorr:         0               88
RSUnCorr:       0               0

                        Bearer 0
HEC:            24602           0
OCD:            167             0
LCD:            167             0
Total Cells:    3719832075              0
Data Cells:     137363851               0
Drop Cells:     277
Bit Errors:     0               0

ES:             2139            4
SES:            14              0
UAS:            28              28
AS:             169639

                        Bearer 0
INP:            0.00            0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            1.88            6.94
OR:             101.84          23.03
AgR:            64165.35        15415.73

Bitswap:        50296/56196             34/36

Total time = 1 days 23 hours 7 min 47 sec
FEC:            0               88
CRC:            13206           4
ES:             2139            4
SES:            14              0
UAS:            28              28
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Latest 15 minutes time = 7 min 47 sec
FEC:            0               0
CRC:            10              0
ES:             6               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 15 minutes time = 15 min 0 sec
FEC:            0               0
CRC:            16              0
ES:             11              0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           N/A
Latest 1 day time = 23 hours 7 min 47 sec
FEC:            0               33
CRC:            6534            3
ES:             1058            3
SES:            8               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 1 day time = 24 hours 0 sec
FEC:            0               55
CRC:            6672            1
ES:             1081            1
SES:            6               0
UAS:            28              28
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Since Link time = 1 days 23 hours 7 min 19 sec
FEC:            0               88
CRC:            13206           4
ES:             2139            4
SES:            14              0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

It looks like you are on fastpath at the moment but getting a good few error seconds. Maybe not enough to move you to interleaved.

Looks like your SNR has dipped low to keep hold of your 64Mb sync also. If you were to reboot it, You would probably sync around 60Mb.

What is your home network like? Phone extensions, Home plugs?

Logsi · 7 Nov 2015 at 09:24

michty_me said:
It looks like you are on fastpath at the moment but getting a good few error seconds. Maybe not enough to move you to interleaved.

Looks like your SNR has dipped low to keep hold of your 64Mb sync also. If you were to reboot it, You would probably sync around 60Mb.

What is your home network like? Phone extensions, Home plugs?

I have noticed my ping go down. My ADSL line was always fast path but VDSL changed that to interleaved which was annoying.

Home network is not that extensive at all. Have a gigabit switch coming off the router for the Tv and everything under it like AV receiver, PS4...etc. Then several wireless devices. Do have another Ethernet that is going hard wired to the computer upstairs.

The only extension to the phone socket I can see is when the black cable comes into the house there is a 2-3m white cable extension to the master socket. No home plugs.

Would like to see if I can sort any issues out though as next door that attached to the same mast gets 70 odd Meg and lower latency.

Thanks for the info! Is there a place that can help me translate these stats for a layman?

EDIT - http://www.kitz.co.uk/adsl/linestats_errors.htm

Found this! Will take a read.

marjohn56 · 7 Nov 2015 at 10:40

No G.Inp so guess it's an ECI cab. Looks like the D7000 is doing an amazing job holding the sync at 4 megs above the max attainable. Do you know how far away your cab is?

Logsi · 7 Nov 2015 at 12:49

marjohn56 said:
No G.Inp so guess it's an ECI cab. Looks like the D7000 is doing an amazing job holding the sync at 4 megs above the max attainable. Do you know how far away your cab is?

Yes, ECI cab and around 400m if i follow the track of the masts and road.

Never had any problem with my line really with regards to drop outs, not that i know of anyway. I am concerned with why next door has 10 odd meg more than me download speed though.

Here's another. Should i expect this to resync some time this week?

Code:

# xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 15475 Kbps, Downstream rate = 61279 Kbps
Bearer: 0, Upstream rate = 15393 Kbps, Downstream rate = 64063 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):        4.9             6.1
Attn(dB):        17.8            0.0
Pwr(dBm):        13.4            6.8

                        VDSL2 framing
                        Bearer 0
MSGc:           18              14
B:              239             238
M:              1               1
T:              21              14
R:              0               16
S:              0.1192          0.4942
L:              16104           4128
D:              1               1
I:              240             255
N:              240             255

                        Counters
                        Bearer 0
OHF:            124867285               72906
OHFErr:         14858           5
RS:             0               2538850
RSCorr:         0               111
RSUnCorr:       0               0

                        Bearer 0
HEC:            31006           0
OCD:            210             0
LCD:            210             0
Total Cells:    3230103661              0
Data Cells:     178760752               0
Drop Cells:     277
Bit Errors:     0               0

ES:             2712            5
SES:            16              0
UAS:            28              28
AS:             235386

                        Bearer 0
INP:            0.00            0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            1.88            6.94
OR:             101.84          23.03
AgR:            64165.35        15415.73

Bitswap:        57582/64488             36/38

Total time = 2 days 17 hours 23 min 34 sec
FEC:            0               111
CRC:            14858           5
ES:             2712            5
SES:            16              0
UAS:            28              28
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Latest 15 minutes time = 8 min 34 sec
FEC:            0               0
CRC:            3               0
ES:             2               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 15 minutes time = 15 min 0 sec
FEC:            0               0
CRC:            16              0
ES:             11              0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           N/A
Latest 1 day time = 17 hours 23 min 34 sec
FEC:            0               17
CRC:            1594            1
ES:             538             1
SES:            2               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 1 day time = 24 hours 0 sec
FEC:            0               39
CRC:            6592            3
ES:             1093            3
SES:            8               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Since Link time = 2 days 17 hours 23 min 5 sec
FEC:            0               111
CRC:            14858           5
ES:             2712            5
SES:            16              0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

I thought anything below 6dB SNR is poor

michty_me · 7 Nov 2015 at 13:17

Logsi said:

Yes, ECI cab and around 400m if i follow the track of the masts and road.

Never had any problem with my line really with regards to drop outs, not that i know of anyway. I am concerned with why next door has 10 odd meg more than me download speed though.

Here's another. Should i expect this to resync some time this week?

Code:

# xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 15475 Kbps, Downstream rate = 61279 Kbps
Bearer: 0, Upstream rate = 15393 Kbps, Downstream rate = 64063 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):        4.9             6.1
Attn(dB):        17.8            0.0
Pwr(dBm):        13.4            6.8

                        VDSL2 framing
                        Bearer 0
MSGc:           18              14
B:              239             238
M:              1               1
T:              21              14
R:              0               16
S:              0.1192          0.4942
L:              16104           4128
D:              1               1
I:              240             255
N:              240             255

                        Counters
                        Bearer 0
OHF:            124867285               72906
OHFErr:         14858           5
RS:             0               2538850
RSCorr:         0               111
RSUnCorr:       0               0

                        Bearer 0
HEC:            31006           0
OCD:            210             0
LCD:            210             0
Total Cells:    3230103661              0
Data Cells:     178760752               0
Drop Cells:     277
Bit Errors:     0               0

ES:             2712            5
SES:            16              0
UAS:            28              28
AS:             235386

                        Bearer 0
INP:            0.00            0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            1.88            6.94
OR:             101.84          23.03
AgR:            64165.35        15415.73

Bitswap:        57582/64488             36/38

Total time = 2 days 17 hours 23 min 34 sec
FEC:            0               111
CRC:            14858           5
ES:             2712            5
SES:            16              0
UAS:            28              28
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Latest 15 minutes time = 8 min 34 sec
FEC:            0               0
CRC:            3               0
ES:             2               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 15 minutes time = 15 min 0 sec
FEC:            0               0
CRC:            16              0
ES:             11              0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           N/A
Latest 1 day time = 17 hours 23 min 34 sec
FEC:            0               17
CRC:            1594            1
ES:             538             1
SES:            2               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 1 day time = 24 hours 0 sec
FEC:            0               39
CRC:            6592            3
ES:             1093            3
SES:            8               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Since Link time = 2 days 17 hours 23 min 5 sec
FEC:            0               111
CRC:            14858           5
ES:             2712            5
SES:            16              0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

I thought anything below 6dB SNR is poor

ot poor as such, That is just what DLM stays around. It can be more or less, However like I said if you resync it will go back to 6db and a lower sync rate.

Have you tried just having the modem plugged into the test socket for a while?

My line had a re-sync and gained 4Mb on the upstream and additional SNR but that was after several months uptime.

ardsar · 9 Nov 2015 at 10:39

Keep an eye on your S/N - make sure that it does not continue to drop. If it does you have the same issue that i had.

marjohn56 · 9 Nov 2015 at 10:41

ardsar said:
Keep an eye on your S/N - make sure that it does not continue to drop. If it does you have the same issue that i had.

Hows the 7800 behaving?

ardsar · 9 Nov 2015 at 13:00

marjohn56 said:
Hows the 7800 behaving?

It seems to be behaving well, its given me a slight increase in speed on the upstream (6.8M rather than 6.3M), downstream is still 25M as my line has been capped at this value. S/N varies over time but is always around 6dB.

I cant work out how to unlock this modem to access telnet. I have tried all methods, none of them seem to work. Not sure i'd get much info from it though as its lantiq based. For the moment i've decided to leave it alone and get on with more important things lol....

Logsi · 9 Nov 2015 at 22:22

ardsar said:
Keep an eye on your S/N - make sure that it does not continue to drop. If it does you have the same issue that i had.

Downstream SNR is down to 4.3 now...hmmmm

marjohn56 · 9 Nov 2015 at 23:13

Deleted

michty_me · 9 Nov 2015 at 23:24

Logsi said:
Downstream SNR is down to 4.3 now...hmmmm

Is it recovering at all during the day or any time at night? Have you got a historical graph going of it?

Logsi · 10 Nov 2015 at 08:39

I shall look into logging a graph. It does seem to fluctuate!

Can't say I've notice any problems with the Internet at all though so maybe I should let it consume me!

marjohn56 · 10 Nov 2015 at 08:49

Logsi said:
I shall look into logging a graph. It does seem to fluctuate!

Can't say I've notice any problems with the Internet at all though so maybe I should let it consume me!

Should look something like this. My DS really does not move, my US on the other hand can drop to 6db if the weather is bad, but as you see it recovers and so does the attainable speed.

Logsi · 11 Nov 2015 at 14:55

Seems like my DS can go as low as 3.9 but does go up again a small amount. I have several CRC errors every 15 minutes. Not lost sync in the week it's been up for though.

marjohn56 · 11 Nov 2015 at 15:11

If the attainable is also recovering then I don't think you have much to worry about unlike Ardsar, it's holding on and that's all that matters.

Logsi · 12 Nov 2015 at 17:10

The downstream speed is down to 58mbps on the stats and 3.8 SNR.

Am I experiencing the same as Ardsar?

EDIT - Some more stats.

Code:

D7000 login: root
# xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 15359 Kbps, Downstream rate = 58681 Kbps
Bearer: 0, Upstream rate = 15393 Kbps, Downstream rate = 64063 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):        3.8             6.0
Attn(dB):        17.8            0.0
Pwr(dBm):        13.4            6.8

                        VDSL2 framing
                        Bearer 0
MSGc:           18              14
B:              239             238
M:              1               1
T:              21              14
R:              0               16
S:              0.1192          0.4942
L:              16104           4128
D:              1               1
I:              240             255
N:              240             255

                        Counters
                        Bearer 0
OHF:            362619125               1804085
OHFErr:         47911           10
RS:             0               891624
RSCorr:         0               704
RSUnCorr:       0               0

                        Bearer 0
HEC:            125134          0
OCD:            646             0
LCD:            646             0
Total Cells:    2612356546              0
Data Cells:     855272352               0
Drop Cells:     277
Bit Errors:     0               0

ES:             9296            10
SES:            36              0
UAS:            28              28
AS:             683570

                        Bearer 0
INP:            0.00            0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            1.88            6.94
OR:             101.84          23.03
AgR:            64165.35        15415.73

Bitswap:        148209/166060           79/81

Total time = 7 days 21 hours 53 min 18 sec
FEC:            0               704
CRC:            47911           10
ES:             9296            10
SES:            36              0
UAS:            28              28
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Latest 15 minutes time = 8 min 18 sec
FEC:            0               0
CRC:            8               0
ES:             3               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 15 minutes time = 15 min 0 sec
FEC:            0               0
CRC:            40              0
ES:             20              0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           N/A
Latest 1 day time = 21 hours 53 min 18 sec
FEC:            0               47
CRC:            4731            2
ES:             1005            2
SES:            5               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 1 day time = 24 hours 0 sec
FEC:            0               37
CRC:            5559            1
ES:             1252            1
SES:            2               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Since Link time = 7 days 21 hours 52 min 49 sec
FEC:            0               704
CRC:            47911           10
ES:             9296            10
SES:            36              0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

michty_me · 12 Nov 2015 at 18:06

Try switching off for 30 minutes and powering back up to see if it recovers.

marjohn56 · 13 Nov 2015 at 08:21

Took a 3db hit on attenuation on Wednesday, dropped me from 71 to 69. It rained last night and I had negative attainable rates but it held on. Thin OR have been pratting about with the cables around here again. Winter is coming and I'll probabkly drop another couple of Mbps before spring arrives.

ardsar · 13 Nov 2015 at 09:01

Logsi said:

The downstream speed is down to 58mbps on the stats and 3.8 SNR.

Am I experiencing the same as Ardsar?

EDIT - Some more stats.

Code:

D7000 login: root
# xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 15359 Kbps, Downstream rate = 58681 Kbps
Bearer: 0, Upstream rate = 15393 Kbps, Downstream rate = 64063 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):        3.8             6.0
Attn(dB):        17.8            0.0
Pwr(dBm):        13.4            6.8

                        VDSL2 framing
                        Bearer 0
MSGc:           18              14
B:              239             238
M:              1               1
T:              21              14
R:              0               16
S:              0.1192          0.4942
L:              16104           4128
D:              1               1
I:              240             255
N:              240             255

                        Counters
                        Bearer 0
OHF:            362619125               1804085
OHFErr:         47911           10
RS:             0               891624
RSCorr:         0               704
RSUnCorr:       0               0

                        Bearer 0
HEC:            125134          0
OCD:            646             0
LCD:            646             0
Total Cells:    2612356546              0
Data Cells:     855272352               0
Drop Cells:     277
Bit Errors:     0               0

ES:             9296            10
SES:            36              0
UAS:            28              28
AS:             683570

                        Bearer 0
INP:            0.00            0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            1.88            6.94
OR:             101.84          23.03
AgR:            64165.35        15415.73

Bitswap:        148209/166060           79/81

Total time = 7 days 21 hours 53 min 18 sec
FEC:            0               704
CRC:            47911           10
ES:             9296            10
SES:            36              0
UAS:            28              28
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Latest 15 minutes time = 8 min 18 sec
FEC:            0               0
CRC:            8               0
ES:             3               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 15 minutes time = 15 min 0 sec
FEC:            0               0
CRC:            40              0
ES:             20              0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           N/A
Latest 1 day time = 21 hours 53 min 18 sec
FEC:            0               47
CRC:            4731            2
ES:             1005            2
SES:            5               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Previous 1 day time = 24 hours 0 sec
FEC:            0               37
CRC:            5559            1
ES:             1252            1
SES:            2               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
Since Link time = 7 days 21 hours 52 min 49 sec
FEC:            0               704
CRC:            47911           10
ES:             9296            10
SES:            36              0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Retr:           0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0

If your S/N does not recover back to 6dB and continues to drop over time then yes you have the same issue. It would be interesting to see your Bit loading graph shortly after rebooting your router compared with after a few days when your S/N has dropped. I suspect some of your bins are being marked unusable and therefore you will see gaps in the bit loading.

Logsi · 13 Nov 2015 at 09:24

ardsar said:
If your S/N does not recover back to 6dB and continues to drop over time then yes you have the same issue. It would be interesting to see your Bit loading graph shortly after rebooting your router compared with after a few days when your S/N has dropped. I suspect some of your bins are being marked unusable and therefore you will see gaps in the bit loading.

Going to find a Windows laptop to use and log a graph with stats. It's a shame it's dropping. Would this be a Broadcom/ECI incompatibility?

Is there a way to avoid DSLAM dropping my bandwidth and latency when unplugging?