All Super Frames Error 7800NXL

[Dazman]

My new 7800NXL does not successfuly process any Super Frames and they all error out as per below. It does this with any SNR I use up to 21 and for this example it is set for 8.5. Super Frames is always 0 and and Super Frame Errors is always a number much greater than 0. I am using 2.32e. Does anyone have any suggestions?

xDSL
Mode ADSL_2plus
Traffic Type ATM
Status Up
Link Power State L0
Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 8.6 25.0
Attenuation (dB) 42.0 26.3
Output Power (dBm) 19.8 12.2
Attainable Rate (Kbps) 7740 1095
Rate (Kbps) 7599 447
MSGc (# of bytes in overhead channel message) 59 11
B (# of bytes in Mux Data Frame) 237 13
M (# of Mux Data Frames in FEC Data Frame) 1 1
T (Mux Data Frames over sync bytes) 1 4
R (# of check bytes in FEC Data Frame) 0 0
S (ratio of FEC over PMD Data Frame length) 0.9979 0.9824
L (# of bits in PMD Data Frame) 1908 114
D (interleaver depth) 1 1
Delay (msec) 0 0
INP (DMT symbol) 0.00 0.00
Super Frames 0 0
Super Frame Errors 347 0
RS Words 0 2105012
RS Correctable Errors 0 0
RS Uncorrectable Errors 0 0
HEC Errors 661 0
OCD Errors 0 0
LCD Errors 0 0
Total Cells 9289179 547697
Data Cells 9255573 374565
Bit Errors 0 0
Total ES 332 0
Total SES 0 0
Total UAS 0 0

[tynymynydd]

I have the same issue. Also my router seems to periodically freeze. I can't access the management page etc. I have to reboot the router. It was always rock solid prior to the firmware upgrade

[billion_fan]

My new 7800NXL does not successfuly process any Super Frames and they all error out as per below. It does this with any SNR I use up to 21 and for this example it is set for 8.5. Super Frames is always 0 and and Super Frame Errors is always a number much greater than 0. I am using 2.32e. Does anyone have any suggestions?

xDSL
Mode ADSL_2plus
Traffic Type ATM
Status Up
Link Power State L0
Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 8.6 25.0
Attenuation (dB) 42.0 26.3
Output Power (dBm) 19.8 12.2
Attainable Rate (Kbps) 7740 1095
Rate (Kbps) 7599 447
MSGc (# of bytes in overhead channel message) 59 11
B (# of bytes in Mux Data Frame) 237 13
M (# of Mux Data Frames in FEC Data Frame) 1 1
T (Mux Data Frames over sync bytes) 1 4
R (# of check bytes in FEC Data Frame) 0 0
S (ratio of FEC over PMD Data Frame length) 0.9979 0.9824
L (# of bits in PMD Data Frame) 1908 114
D (interleaver depth) 1 1
Delay (msec) 0 0
INP (DMT symbol) 0.00 0.00
Super Frames 0 0
Super Frame Errors 347 0
RS Words 0 2105012
RS Correctable Errors 0 0
RS Uncorrectable Errors 0 0
HEC Errors 661 0
OCD Errors 0 0
LCD Errors 0 0
Total Cells 9289179 547697
Data Cells 9255573 374565
Bit Errors 0 0
Total ES 332 0
Total SES 0 0
Total UAS 0 0

Current statistics has Super frame errors because the each packets being transmitted doesn’t have Super frame size packets.

If the packets being transmitted has Super frames, The router will count to the Super Frames label.

[Dazman]

Understood, but if I am getting super frame errors doesn't that mean I am receiving super frames? If so doesn't that mean all super frames are erroring? If not receiving super frames then why am I getting superfram errors? Just to be clear I have never had any entries in the Super Frames stat but I always have errors in the Super Fram Errors stat.

[billion_fan]

Understood, but if I am getting super frame errors doesn't that mean I am receiving super frames? If so doesn't that mean all super frames are erroring? If not receiving super frames then why am I getting superfram errors? Just to be clear I have never had any entries in the Super Frames stat but I always have errors in the Super Fram Errors stat.

Here's the reply from our engineers


"No Super frames means there is no super frames packets was sent to xDSL traffic line. Current statistics has Super frame errors because the each packets being transmitted doesn’t have Super frame size packets.

If the packets being transmitted has Super frames, The router will count to the Super Frames label"

[Dazman]

I have found the problem. There is a bug in the table on the xDSL page does not show the actual Super Frames recieved. When I telnet I see Down = 3592005 and Up 476153 but on the xDSL table both are always 0. This bug is in 2.32e and needs to be fixed.

[billion_fan]

I have found the problem. There is a bug in the table on the xDSL page does not show the actual Super Frames recieved. When I telnet I see Down = 3592005 and Up 476153 but on the xDSL table both are always 0. This bug is in 2.32e and needs to be fixed.

Just tested on our 2 ADSL lines here (Zen and Enta) both lines show super frames within the web gui (see attached screen shot, you can see the two different sync rates, and both lines use ADSL 2+, with super frames logged)

So its a strange one, did you perform a factory reset after your upgraded to 2.32e?? Maybe it worth trying to

1. Make a backup of your config file,
2. reset the unit,
3. check for super frames(once connected to the internet, don't use your backup file yet)
4. If you got super frames logged continue to setup the device manually, if you still don't have super frames, restore your config

[Dazman]

I'll give it a try and post back the results.

[Dazman]

It is displaying Super Frames now after BT reset my line and added interleaving values of D = 2 and U = 32. DLM must have done this. Don't know why this profile reset caused it to start working and I hate the extra latency but at least the line is more stable and getting only 3 or 4 superframe errors per 24 hours.