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[Skinnersplace]

I agree the upload is poor, I believe it should be 80/20 however it am missing a couple of tones (I am presuming cross talk / Interference).

I would love to have better upload, hence trying out the other routers, to see if the extra filtering / newer firmware and chipsets helped.

[d2d4j]

Hi

You are on 80/20 as your download speed is circa 60

I would try using the test socket on the 5C and if that improves upload, try with a new DSL Filter

Many thanks

John

[Weaver]

> Running Johnson's 1312-B10A-17-jumbo-tel-x6-stats1.1-cmd.bin build, I have a question about baby jumbo frames, is that active by default in bridge mode (there is no MTU box in the config page) or do I need to configure via the cli?

You don’t have to do anything, it’s all set up to PPP MTU 1500+8=1508. Your router will need to be able to support PPP MTU 1508 (RFC 4638 required) too for this to work.

I have the johnson ZyXEL software too in all my ZyXEL VMG1312-B10A modems. It’s superb. Have a look at http://<modem’s-ipv4-addr>:8000 and take a peep at the stats graphs. I use the johnson stats http API in a program on my iPad that queries all my modems.

[Skinnersplace]

Thanks, I found the MTU (1508) size with ifconfig and set the wan port on my router to match.
I do like the inbuilt stats, still also running dslstats for backwards comparison ATM.

Good call on the test port, It's pretty new but I will give it a test. Not currently running a separate filter (only the faceplate/input stage of the modem) is that not best practice?

[burakkucat]

Good call on the test port, It's pretty new but I will give it a test. Not currently running a separate filter (only the faceplate/input stage of the modem) is that not best practice?

Using a centralised filter (provided by the faceplate) is the most efficient (and reliable) method. John's (d2d4j) suggestion to try with a different "rat's tail" micro-filter is just for testing purposes; to check that the faceplate (centralised filter) is not defective.

[Skinnersplace]

trying the XMG3927-B50A today, it synced lower downstream than the VMG1312-B10A


============================================================================
    VDSL Training Status:   Showtime
                    Mode:   VDSL2 Annex B
            VDSL Profile:   Profile 17a
                G.Vector:   Disable
            Traffic Type:   PTM Mode
             Link Uptime:   0 day: 0 hour: 8 minutes
============================================================================
       VDSL Port Details       Upstream         Downstream
               Line Rate:      8.281 Mbps       51.930 Mbps
    Actual Net Data Rate:      8.251 Mbps       51.931 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:        6.1 dB            4.1 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:        4.7 dBm          12.4 dBm
           Receive Power:       -6.8 dBm         -14.7 dBm
              Actual INP:        0.0 symbols      55.0 symbols
       Total Attenuation:       11.4 dB           27.1 dB
Attainable Net Data Rate:      8.251 Mbps       52.747 Mbps
============================================================================
      VDSL Band Status    U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):  7.3    34.0    51.6     N/A    15.8    41.9    65.0   
Signal Attenuation(dB):  7.3    33.2    49.1     N/A    23.9    41.6    65.4   
        SNR Margin(dB):  5.8     6.2     6.1     N/A     4.1     4.1     4.2   
   Transmit Power(dBm):  0.4   - 9.4     2.2     N/A     9.1     7.9     4.9   
============================================================================

            VDSL Counters

           Downstream        Upstream
Since Link time = 8 min 15 sec
FEC:      578      0
CRC:      0      0
ES:      0      0
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Retr:      0
FastRetr:   0
FailedRetr:   0
FailedFastRetr:   0
Latest 15 minutes time = 11 min 20 sec
FEC:      578      0
CRC:      0      0
ES:      0      0
SES:      0      0
UAS:      183      183
LOS:      0      0
LOF:      0      0
LOM:      0      0
Retr:      0
FastRetr:   0
FailedRetr:   0
FailedFastRetr:   0
Previous 15 minutes time = 15 min 0 sec
FEC:      0      0
CRC:      0      0
ES:      0      0
SES:      0      0
UAS:      899      899
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 = 1 hours 11 min 20 sec
FEC:      578      0
CRC:      0      0
ES:      0      0
SES:      0      0
UAS:      3783      3783
LOS:      0      0
LOF:      0      0
LOM:      0      0
Retr:      0
FastRetr:   0
FailedRetr:   0
FailedFastRetr:   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
Retr:      0
FastRetr:   0
FailedRetr:   0
FailedFastRetr:   0
Total time = 1 hours 11 min 20 sec
FEC:      578      0
CRC:      0      0
ES:      0      0
SES:      0      0
UAS:      3783      3783
LOS:      0      0
LOF:      0      0
LOM:      0      0
Retr:      0
FastRetr:   0
FailedRetr:   0
FailedFastRetr:   0
============================================================================

[kitz]

Think I've got these right to be able to see the important figures.

Code: [Select]

HG612 Down            Up
Line Rate 51287 Kbps 8541 Kbps
SNR (dB):        5.5             6.5
Attn(dB):        20.9            0.0


VMG1312-B10A Downstream Upstream
Line Rate: 60.061 Mbps 8.283 Mbps
SNR Margin: 4.1 dB 6.2 dB 
Total Attn: 21.6 dB 0.0 dB


VMG1312-B10A Downstream   Upstream
Line Rate: 60062 8253
SNR margin: 4.6 6.0
Line attn: 21.6      0.0


XMG3927-b50a Downstream Upstream         
Line Rate:      51.930 Mbps 8.281 Mbps       
SNR Margin:        4.1 dB 6.1 dB
Total Attn:       27.1 dB 11.4 dB           

The results came in in the order I expected ie the downstream on the B10A boxes are usually the better performers - probably due to the internal noise filter. 8Mbps improvement  is probably a bit higher than the normal so good result.   Lower SNRM is noted.
The HG612 wins ever so slightly for the upstream though, but on the whole you know that you have decent replaceable units for the HG612,    Thanks for sharing your findings.