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Author Topic: Zyxel VMG1312-B10A with vectoring resyncing at half speed, WITH X6 firmware  (Read 418 times)

GigabitEthernet

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I have the X6 firmware from here: https://github.com/johnson442/custom-zyxel-firmware/releases. I have this because in the past I had issues with the modem resyncing at half speed, due to an incompatibility with vectoring (which I have on my line) and the modem.

Unfortunately the modem is resyncing at half speed still.

====================================================================================
    VDSL Training Status:   Showtime
                    Mode:   VDSL2 Annex B
            VDSL Profile:   Profile 17a
                G.Vector:   Enable
            Traffic Type:   PTM Mode
             Link Uptime:   0 day: 9 hours: 6 minutes
====================================================================================
       VDSL Port Details       Upstream         Downstream
               Line Rate:      5.968 Mbps       18.645 Mbps
    Actual Net Data Rate:      5.941 Mbps       18.646 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:        9.9 dB           26.9 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:      - 1.7 dBm          12.1 dBm
           Receive Power:      -22.2 dBm         -16.9 dBm
              Actual INP:        0.0 symbols      49.0 symbols
       Total Attenuation:        0.0 dB          24.4 dB
Attainable Net Data Rate:      5.978 Mbps       56.707 Mbps
====================================================================================
  VDSL Band Status        U0      U1      U2      U3      U4      D1      D2      D3
  Line Attenuation(dB):    9.6    40.5    62.0     N/A     N/A    19.2    49.0    85.9   
Signal Attenuation(dB):    9.6    39.9     N/A     N/A     N/A    27.6    48.6     N/A   
        SNR Margin(dB):    11.5    9.7     N/A     N/A     N/A    26.9    27.0     N/A   
         TX Power(dBm):   -12.7   -2.1     N/A     N/A     N/A    10.6    6.6     N/A   
====================================================================================

            VDSL Counters

           Downstream        Upstream
Since Link time = 6 min 43 sec
FEC:      3727      356
CRC:      0      15
ES:      0      11
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Latest 15 minutes time = 6 min 9 sec
FEC:      5      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 = 7 hours 6 min 9 sec
FEC:      120      34
CRC:      0      15
ES:      0      11
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Previous 1 day time = 24 hours 0 sec
FEC:      11111541      322
CRC:      1384      68
ES:      30      36
SES:      24      4
UAS:      166      151
LOS:      1      0
LOF:      0      0
LOM:      10      0
Total time = 1 days 7 hours 6 min 9 sec
FEC:      160232548      356
CRC:      4823      427
ES:      116      258
SES:      83      4
UAS:      730      668
LOS:      4      0
LOF:      4      0
LOM:      45      0
====================================================================================

                 
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burakkucat

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Re: Zyxel VMG1312-B10A with vectoring resyncing at half speed, WITH X6 firmware
« Reply #1 on: September 21, 2020, 07:21:36 PM »

I wasn't aware that the ZyXEL VMG1312-B10A was vectoring capable. <Puzzled.>  :-\
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GigabitEthernet

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Re: Zyxel VMG1312-B10A with vectoring resyncing at half speed, WITH X6 firmware
« Reply #2 on: September 21, 2020, 07:29:05 PM »

I wasn't aware that the ZyXEL VMG1312-B10A was vectoring capable. <Puzzled.>  :-\

Well what modem would you advise?

I understood with the X6 firmware it worked fine. But if not, I am happy to buy something else, I only need the modem.
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burakkucat

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Re: Zyxel VMG1312-B10A with vectoring resyncing at half speed, WITH X6 firmware
« Reply #3 on: September 21, 2020, 07:47:26 PM »

I'm not sure what to suggest. Sorry.

Seeing the line "G.Vector:   Enable" in the data you included, above, resulted in some head-scratching. After a quick search on the ZyXEL website, the VMG1312-B10A page confirms that it is vectoring capable.

I've just learnt something.
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siofjofj

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Re: Zyxel VMG1312-B10A with vectoring resyncing at half speed, WITH X6 firmware
« Reply #4 on: September 21, 2020, 08:38:20 PM »

I understood with the X6 firmware it worked fine.
Hard to say. I believe some people on this forum have had success with version x6, but the number that have tried it is tiny (1 or 2 tops) since vectoring is very rare. I remember reading a comment in another thread suggesting that a regression had occurred and that the older versions are better. There have certainly been a number of changes made regarding vectoring between various versions. These changes are listed as G.993.5 in this document https://www.cisco.com/web/software/282821780/140978/ReleaseNote_A2pv6F039x3.pdf for a subset of firmwares.

If you want to try an older version of the DSL firmware without having to rebuild the whole firmware image, the A2pv6F039o driver is in the official Zyxel AAJZ.6 build, and the A2pv6F039o1 driver is in the AAJZ.7 build. I would be inclined to test the A2pv6F039o version, since this is the version which passed Openreach MCT approval (perhaps they tested vectoring?). Other DSL firmware versions which have passed MCT testing are A2pv6F039f1, A2pv6F039r and A2pv6F039t but a custom firmware build would have to be made to test these. Also, Sky seem to like to stick with the A2pv6F039m1 version in their BCM63168 chipset equipped ER115 for some reason, so that could be another one to try.

Edit: Openreach do indeed test vectoring as part of the MCT tests. See p.27 of this https://www.openreach.co.uk/orpg/home/helpandsupport/sins/sins/downloads/SIN498v7p7.pdf. I'd therefore suggest it is well worth trying one of the approved firmwares.

Edit 2: This thread is well worth a read https://forum.kitz.co.uk/index.php/topic,22306.0.html.
 
« Last Edit: September 21, 2020, 09:20:14 PM by siofjofj »
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GigabitEthernet

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Sorry for the late reply.

I would really like to get the 1508 MTU working but I also need to use the earlier firmwares as reported in the link above. They seem to have no issues on my line.

Can anyone help with this?
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