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[starfire]

Beware if you get the 8924, it's got a fault where you lose 2.4GHz WiFi access after a few days - I have to reboot to get it back.

[Chunkers]

My VMG8924 was delivered very promptly yesterday (but I was out) so I collected from Post Office this morning and can confirm it is brand new - very happy.  So if anyone does decide to purchase a unit from the vendor I linked above hopefully they will get the same good service.

Chunks

[j0hn]

Beware if you get the 8924, it's got a fault where you lose 2.4GHz WiFi access after a few days - I have to reboot to get it back.

I've never had this, nor have I seen anyone else describe this. Apart from an added 5ghz wireless card the 8924 and 8324 are identical. If the 8924 suffered a fault with 2.4ghz Wi-Fi then the 8324 would also. Sounds more like a faulty unit than a widespread problem

My VMG8924 was delivered very promptly yesterday (but I was out) so I collected from Post Office this morning and can confirm it is brand new - very happy.  So if anyone does decide to purchase a unit from the vendor I linked above hopefully they will get the same good service.

Chunks

they appear to have 4 left (if I try add 5 it says not enough stock, but will let you order 4)

[starfire]

I've never had this, nor have I seen anyone else describe this. Apart from an added 5ghz wireless card the 8924 and 8324 are identical. If the 8924 suffered a fault with 2.4ghz Wi-Fi then the 8324 would also. Sounds more like a faulty unit than a widespread problem they appear to have 4 left (if I try add 5 it says not enough stock, but will let you order 4)

http://forum.kitz.co.uk/index.php/topic,13930.msg331511.html#msg331511

http://forum.kitz.co.uk/index.php/topic,13930.msg311358.html#msg311358

and some others I saw

[j0hn]

I've read that also, but that's 1 post from February, where turning Wi-Fi on/off fixes it. The other post says they had that on older firmwares, again toggling Wi-Fi fixed it.

It's a bit of a jump to claim...

Beware if you get the 8924, it's got a fault where you lose 2.4GHz WiFi access after a few days - I have to reboot to get it back.

. My Wi-Fi has never dropped. There's dozens of 8324/8924 users on here who's unit works fine.

Have you tried performing a hard reset?

[starfire]

Yes, I've done a hard reset via button after I updated to the latest FW.

I've raised a ticket with Zyxel, will see what happens.

I'm sure there are lots of people without problems, suspect it hits specific configurations only.

[cliver]

So I've ordered an Zyxel 8324 on eBay for £49.50 new Inc delivery. Now have to wait for my new toy to arrive 😓

[cliver]

So I've ordered an Zyxel 8324 on eBay for £49.50 new Inc delivery. Now have to wait for my new toy to arrive

It Arrived today and turned out to be a VMG8924-B10A instead of the 8324-10A.
I have set it up, disabled NAT DHCP etc. and it is working as modem only.
Sadly my sync rate has halved from 54Mbps on the TT Super router as modem only to 24.991 on the VMG8924.
I can't believe that is a difference between the two modems so must have a config problem I believe.

My VDSL Stats are:

 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: 14 minutes
============================================================================
       VDSL Port Details       Upstream         Downstream
               Line Rate:      8.702 Mbps       24.991 Mbps
    Actual Net Data Rate:      8.670 Mbps       24.992 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:        6.2 dB           18.6 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:        6.7 dBm          12.1 dBm
           Receive Power:       -6.7 dBm          -7.6 dBm
              Actual INP:        0.0 symbols      46.0 symbols
       Total Attenuation:       13.3 dB           19.8 dB
Attainable Net Data Rate:      8.670 Mbps       51.513 Mbps
============================================================================
      VDSL Band Status    U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):  7.3    41.0    50.2     N/A    14.8    40.7    64.5   
Signal Attenuation(dB):  7.3    40.5    48.8     N/A    16.8    40.4    64.8   
        SNR Margin(dB):  6.3     6.2     6.3     N/A    18.6    18.6     0.0   
   Transmit Power(dBm):  0.5   - 5.6     4.9     N/A     9.1     7.5     4.3 

My Setup on the modem is as follows:

General
Active: Y
Name: Modem
Type: ADSL/VDSL over PTM
Type: Bridge

VLAN
Active: Y
802.1p: 1
802.1q: 101

QoS
Rate Limit: blank


I'm loath to go back to the TT super router yet as I don't want to upset the DLM. have I set this up right? As I say it connects ok but speeds have halved :-(
Any help appreciated.

Regards
Clive

EDIT: Current Firmware Version: 1.00(AAKL.14)C0 flashed by me before setting up.

Stats from TT Super Router:

Internet Connection

DSL synchronization status:
Up
Connection status:
Showtime
WAN IP Address:
None
Primary DNS Server:
None
Secondary DNS Server:
NoneLine Quality

Upstream line rate (kbit/s):
8577
Downstream line rate (kbit/s):
53443
Upstream noise safety coefficient (dB):
6
Downstream noise safety coefficient (dB):
6.4
Upstream interleave depth:
0
Downstream interleave depth:
0
Line standard:
VDSL
Upstream line attenuation (dB):
41.1
Downstream line attenuation (dB):
15.3
Upstream output power (dBm):
6.1
Downstream output power (dBm):
12.4
Downstream interleave depth:
None
DSL up-time:
2 days 18 hours 35 minutes 1 second

[roswellgrey]

SNR Margin:        6.2 dB           18.6 dB
Attainable Net Data Rate:      8.670 Mbps       51.513 Mbps

Looks like you should be able to get 51 Mbps out of it, but it has decided to sync with a d/s SNR Margin of 18.6 dB.
I wonder why ? (I have no experience of the Zyxel myself to answer that ...)

[cliver]

SNR Margin:        6.2 dB           18.6 dB
Attainable Net Data Rate:      8.670 Mbps       51.513 Mbps

Looks like you should be able to get 51 Mbps out of it, but it has decided to sync with a d/s SNR Margin of 18.6 dB.
I wonder why ? (I have no experience of the Zyxel myself to answer that ...)

Thanks roswellgrey,
That's how I read it as well. I assume it will gradually push the sync rate up, presuming the noise figures stay the same.
Just wondering if there's anything I can do to pick it up. 

[j0hn]

power down the modem for 30 minutes then reconnect, to avoid DLM counting it as a resync. very odd to have such a high SNRM.

[roswellgrey]

Not that this help much at all but  .... another odd thing I just noticed - the D3 band looks a bit sick (0 SNR, 64 db Att), and I was wondering if the previous modems 53 Mb d/s sync could have been achieved with a D3 band looking like that ? or is there something weird happening with the new modem ....

[cliver]

Powered everything down and left it for 30 mins as suggested, thanks j0hn.
All now looking good, see stats below.
Sync speed seems to be in line with what I got from the TT Super Router. Speed tests are, on initial tests a fraction down on what I was getting but that may be time of day etc.
I have DLS Stats running on it at the moment so will monitor it for a few days ad see what happens.
Thanks all for your inputs and advice :-)


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:      9.191 Mbps       51.549 Mbps
    Actual Net Data Rate:      9.157 Mbps       51.550 Mbps
          Trellis Coding:         ON                ON
              SNR Margin:        6.4 dB            6.8 dB
            Actual Delay:          0 ms              0 ms
          Transmit Power:        6.4 dBm          12.1 dBm
           Receive Power:       -6.8 dBm          -8.0 dBm
              Actual INP:        0.0 symbols      49.0 symbols
       Total Attenuation:       13.3 dB           20.2 dB
Attainable Net Data Rate:      9.157 Mbps       53.482 Mbps
============================================================================
      VDSL Band Status    U0      U1      U2      U3      D1      D2      D3
  Line Attenuation(dB):  7.3    41.1    50.3     N/A    15.4    40.6    64.6   
Signal Attenuation(dB):  7.3    40.8    48.7     N/A    17.1    40.4    64.8   
        SNR Margin(dB):  6.7     6.3     6.4     N/A     7.2     6.6     6.4   
   Transmit Power(dBm):  0.4   - 5.3     4.8     N/A     9.0     7.7     4.1   
============================================================================

            VDSL Counters

           Downstream        Upstream
Since Link time = 8 min 49 sec
FEC:      656      18
CRC:      2      4
ES:      1      4
SES:      0      0
UAS:      0      0
LOS:      0      0
LOF:      0      0
LOM:      0      0
Latest 15 minutes time = 9 min 23 sec
FEC:      656      18
CRC:      2      4
ES:      1      4
SES:      0      0
UAS:      33      33
LOS:      0      0
LOF:      0      0
LOM:      0      0
Previous 15 minutes 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
Latest 1 day time = 9 min 23 sec
FEC:      656      18
CRC:      2      4
ES:      1      4
SES:      0      0
UAS:      33      33
LOS:      0      0
LOF:      0      0
LOM:      0      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
Total time = 9 min 23 sec
FEC:      656      18
CRC:      2      4
ES:      1      4
SES:      0      0
UAS:      33      33
LOS:      0      0
LOF:      0      0
LOM:      0      0

[cliver]

Just one question. Can anyone tell me the significance, if any, of the U3 Band showing N/A and the D3 SNR Margin showing 0.0dB in the VDSL Band Status below?
      VDSL Band Status    U0      U1      U2      U3      D1      D2      D3
   Line Attenuation(dB):  7.3    41.0    50.2     N/A    14.8    40.7    64.5   
Signal Attenuation(dB):  7.3    40.5    48.8     N/A    16.8    40.4    64.8   
          SNR Margin(dB):  6.3     6.2     6.3     N/A    18.6    18.6     0.0   
  Transmit Power(dBm):  0.5   - 5.6     4.9     N/A     9.1     7.5     4.3 

[ejs]

U3 being N/A probably means your line is too long to make any use of the U3 band at all. Not even enough signal received to measure the attenuation.

D3 SNRM of 0.0 dB either shows the current conditions, and/or possibly that there are zero bits currently allocated to any of the tones in that band, the bit loading data would confirm or contradict that theory.