Kitz Forum
Broadband Related => Broadband Hardware => Topic started by: jf on December 17, 2020, 12:18:39 PM
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Just recently switched from Sky to EE G.Fast 145 (which is syncing at approx 162).
I purchased a Zyxel XMG3927-B50A, primarily due to Royal Mail losing my EE Router and being potentially without Internet for 2 weeks!
I've had a slightly odd issue - every so often (sometimes 5 minutes, sometimes hourly) I seem to lose connectivity for a couple of seconds, both on Wired and WiFi (5GHz and 2.4Ghz) across a variety of devices.
Stats from DSLStats:
SLAM type / SW version: BDCM:0xc190 (193.144) / v0xc190
Modem/router firmware: AnnexA version - A2pvfbH043q.d26u
DSL mode: G
Status: Showtime
Uptime: 3 days 3 hours 22 min 28 sec
Resyncs: 0 (since 17 Dec 2020 11:59:19)
Downstream Upstream
Line attenuation (dB): 35.2 0.0
Signal attenuation (dB): Not monitored
Connection speed (kbps): 159876 30019
SNR margin (dB): 3.3 7.4
Power (dBm): 0.0 4.0
Interleave depth:
INP: 551.00 535.00
G.INP: Not enabled Not enabled
Vectoring status: Unknown
RSCorr/RS (%): 0.1407 0.1267
RSUnCorr/RS (%): 0.0000 0.0000
ES/hour: 0 0
I note on the FEC Errors tab, the 2 occasions when it drops to zero on the image below seem to tie in with the loss of connectivity:
(https://i.ibb.co/VqMHk6j/dslstats-1.png)
Other than that the connection seems to work correctly, but it is quite frustrating!
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Tricky one, as its not dropping sync it could be that zeroes out simply because the clients are cut off or the PPP session dropped.
If you have more than one client I'd check to see if they can ping each other when this happens. Also check the router to see if the PPP session is still up.
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You'll find that the FEC numbers don't actually drop to 0.
That's just a result of the device running dslstats losing the connection to the Zyxel.
Is the XMG3927-B50A on the latest firmware?
which is syncing at approx 162
The connection speed is 159876 in the stats you posted.
The package limit should be 160000 but SRA means the sync constantly changes up and down rather than being locked to a specific figure.
Does the connection speed actually go above 160000?
For my own curiosity could you posted the result of the 'Telnet Data / Connection Stats' tab? It's more detailed stats than you have posted.
We have a couple users of the XMG3927-B50A on the forum. Hopefully they can assist with your specific query.
Tricky one, as its not dropping sync it could be that zeroes out simply because the clients are cut off or the PPP session dropped.
PPP dropping wouldn't zero the FEC count. It's just the client disconnecting.
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I dont think there is any updated firmware available for the B50A - seems to be from 2019 and I can't find newer!
The Connection Stats are:
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 37929 Kbps, Downstream rate = 161289 Kbps
Bearer: 0, Upstream rate = 30000 Kbps, Downstream rate = 159865 Kbps
Link Power State: L0
Mode: G.fast Annex A
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 3.3 7.4
Attn(dB): 35.2 0.0
Pwr(dBm): 0.0 4.0
G.fast framing
Bearer 0
R: 14 8
N: 210 204
Q: 4 4
L: 4544 4280
Lrmc: 0 0
Ldoi: 0 4160
Rrmc: 210 204
Drmc: 14 3
Mf: 36 36
M(ds/us): 29 6
MNDSNOI: 2 2
ackWindowShift: 11 2
Ldr: 3775 3552
etru: 159689 29967
ETRminEoc: 7346 0
Counters
Bearer 0
OHF: 46955757 671723
OHFErr: 0 2
RS: 3128669016 2955295396
RSCorr: 2930560 3734149
RSUnCorr: 0 0
Retransmit Counters
rtx_tx: 16923 841738
rtx_c: 15621 0
rtx_uc: 0 189
G.fast Counters
minEFTR: 160826 30997
errFreeBits: 685097282 133161011
NOI
BSW: 23023/23023 4877/4877
SRA: 0/0 1156/1156
FRA: 0/0 7/7
RPA: 1/1 1/1
TIGA: 314/314 0/0
DOI
BSW: 0/0 0/0
SRA: 0/0 0/0
FRA: 0/0 0/0
RPA: 0/0 0/0
TIGA: 0/0 0/0
eocBytes: 114692516 415642598
eocPkts: 7183176 1811113
eocMsgs: 7183176 1811113
Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 93924103 53980413
Data Cells: 86740956 52169309
Drop Cells: 0
Bit Errors: 0 0
LORS: 0 0
LOSS: 0 0
ES: 0 4
SES: 0 0
UAS: 107 107
AS: 281726
Bearer 0
INP: 551.00 535.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 1306.31
OR: 340.50 203.80
AgR: 16898.25 16384.62
Total time = 3 days 6 hours 17 min 13 sec
FEC: 2930560 3734149
CRC: 0 2
ES: 0 4
SES: 0 0
UAS: 107 107
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 1
FailedRetr: 0
FailedFastRetr: 0
Latest 15 minutes time = 2 min 13 sec
FEC: 608 1048
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 0
FailedRetr: 0
FailedFastRetr: 0
Previous 15 minutes time = 15 min 0 sec
FEC: 4211 3105
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: N/A
HostInitRetr: N/A
FastRetr: N/A
FailedRetr: N/A
FailedFastRetr: N/A
Latest 1 day time = 6 hours 17 min 13 sec
FEC: 79122 223748
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 0
FailedRetr: 0
FailedFastRetr: 0
Previous 1 day time = 24 hours 0 sec
FEC: 792841 1765246
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 0
FailedRetr: 0
FailedFastRetr: 0
Since Link time = 3 days 6 hours 15 min 25 sec
FEC: 2930560 3734149
CRC: 0 2
ES: 0 4
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 0
FailedRetr: 0
FailedFastRetr: 0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0
ZySH>
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So, the occasional disconnects seem to have gone, replaced with a fairly hefty drop in line speed :(
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xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 37685 Kbps, Downstream rate = 182013 Kbps
Bearer: 0, Upstream rate = 30008 Kbps, Downstream rate = 121791 Kbps
Link Power State: L0
Mode: G.fast Annex A
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 8.6 7.2
Attn(dB): 35.2 0.0
Pwr(dBm): 0.0 4.0
G.fast framing
Bearer 0
R: 6 8
N: 58 204
Q: 11 4
L: 3704 4288
Lrmc: 0 0
Ldoi: 0 4160
Rrmc: 210 204
Drmc: 14 3
Mf: 36 36
M(ds/us): 29 6
MNDSNOI: 2 2
ackWindowShift: 11 2
Ldr: 3051 3520
etru: 121657 29974
ETRminEoc: 7346 0
Counters
Bearer 0
OHF: 105078389 1505999
OHFErr: 0 3
RS: 2557459913 2330421539
RSCorr: 4433877 12284246
RSUnCorr: 0 0
Retransmit Counters
rtx_tx: 36039 2022301
rtx_c: 33472 0
rtx_uc: 0 208
G.fast Counters
minEFTR: 172562 31010
errFreeBits: 1557912850 297979506
NOI
BSW: 66145/66145 10291/10291
SRA: 1/1 2106/2106
FRA: 0/0 8/8
RPA: 1/1 1/1
TIGA: 818/818 0/0
DOI
BSW: 0/0 0/0
SRA: 0/0 0/0
FRA: 0/0 0/0
RPA: 0/0 0/0
TIGA: 0/0 0/0
eocBytes: 254206616 1028862560
eocPkts: 16046205 4164634
eocMsgs: 16046205 4164634
Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 247980493 127201075
Data Cells: 231934317 123036450
Drop Cells: 0
Bit Errors: 0 0
LORS: 0 0
LOSS: 0 0
ES: 0 7
SES: 0 0
UAS: 107 107
AS: 630451
Bearer 0
INP: 551.00 535.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 1303.88
OR: 341.00 204.19
AgR: 13231.62 16415.25
Total time = 7 days 7 hours 9 min 18 sec
FEC: 4433877 12284246
CRC: 0 3
ES: 0 7
SES: 0 0
UAS: 107 107
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 1
FailedRetr: 0
FailedFastRetr: 0
Latest 15 minutes time = 9 min 18 sec
FEC: 5 20229
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 0
FailedRetr: 0
FailedFastRetr: 0
Previous 15 minutes time = 15 min 0 sec
FEC: 9 13294
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: N/A
HostInitRetr: N/A
FastRetr: N/A
FailedRetr: N/A
FailedFastRetr: N/A
Latest 1 day time = 7 hours 9 min 18 sec
FEC: 3664 102127
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 0
FailedRetr: 0
FailedFastRetr: 0
Previous 1 day time = 24 hours 0 sec
FEC: 179407 1349267
CRC: 0 1
ES: 0 3
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 0
FailedRetr: 0
FailedFastRetr: 0
Since Link time = 7 days 7 hours 7 min 29 sec
FEC: 4433877 12284246
CRC: 0 3
ES: 0 7
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Retr: 0
HostInitRetr: 0
FastRetr: 0
FailedRetr: 0
FailedFastRetr: 0
NTR: mipsCntAtNtr=0 ncoCntAtNtr=0
ZySH>