Draytek Vigor 130 and FTTC SNR setting increased sync

mid_gen · 11 Nov 2020 at 21:00

sideways14a said:
As for getting into the dray once its in bridged mode... its possible but you have to **** about with vlans and all that crap - fine down the line but if you have just got it working its a pita

I would just disconnect it from your lan, plug it into your pc and access it direct to its 192.168.2.x address (which i assume you left it on)

no idea what said:
As above it's a PITA to get working. My sysadmin friend got it set up for me with VLANs.

These are my settings I shared some time ago, I'm using pfSense so will be a little different than your Asus router.

https://imgur.com/gallery/Xykm7Cf

Cheers, just switched cables to get into it. MTU was empty, so I assume at default. Set to 1492 now....seems little better?

I'm still seeing packets dropped though, which is puzzling. The Sky router was fine connection wise....

Is it likely to need to settle down for a while?

andy_mk3 · 11 Nov 2020 at 21:05

Iirc sky is 1500mtu.

sideways14a · 11 Nov 2020 at 23:30

Hmm could settle but you might want to drop the SNR as earlier in this thread to stabilise.

mid_gen · 12 Nov 2020 at 11:09

Looks like it's settled down a bit...I'll see when I play a bit of Apex at lunch...

mid_gen · 12 Nov 2020 at 14:25

Seems fine now, phew. Maybe partly due to the networks getting hit by all the new console downloads....my Series X is doing it's bit to saturate the network atm now

Cenuij · 20 Nov 2020 at 17:06

With snr -30

Code:

> vds st
  ---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :      17A       State                : SHOWTIME
   DS Actual Rate          : 68339000 bps   US Actual Rate       : 18820000 bps
   DS Attainable Rate      : 67721716 bps   US Attainable Rate   : 18820000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :        1       US Interleave Depth  :        1
   NE Current Attenuation  :       17 dB    Cur SNR Margin       :        3  dB
   DS actual PSD           :     7. 1 dB    US actual PSD        :    13. 3  dB
   NE CRC Count            :        0       FE CRC Count         :       47
   NE ES Count             :        0       FE  ES Count         :        3
   Xdsl Reset Times        :        0       Xdsl Link  Times     :        1
   ITU Version[0]          : fe004452       ITU Version[1]       : 41590000
   VDSL Firmware Version   : 05-07-06-0D-01-07   [with Vectoring support]
   Power Management Mode   : DSL_G997_PMS_L0
   Test Mode               : DISABLE
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :       21 dB    Far SNR Margin       :        5  dB
   CO ITU Version[0]       : b5004244       CO ITU Version[1]    : 434dc190
   DSLAM CHIPSET VENDOR    : < BDCM >

DSLAM CHIPSET VENDOR = BCDM - that's Broadcom right?

Is it the case that vecotring isn't supported with Broadcom? If that's so, should I turn it off?

BTW - OpenReach just activated the line today but not online yet with Zen.

anyone with Zen know which of the competing info's online is correct:

Set the Vigor to PPPoE / PPPoA
Set the Vigor to MPoA

If MPoA - is it "Bridged IP VC-MUX" encapsulation?

Caged · 20 Nov 2020 at 19:33

There's no vectoring supported on any Openreach FTTC lines, the modem won't enable it if the DSLAM isn't using it, so there's no need to set anything manually.

mid_gen · 21 Nov 2020 at 11:07

My speed has dropped down to an actual rate of 30mb, 43 attainable. Also seeing up to 10% packet loss.

Started at 57 ish, dropping down to 44, now 30, which is starting to cause problems as two of us are working from home on the list.

No problems when I just had the Sky router, just since switching to the Draytek modem and Asus AC66u router.

Going to try swapping it back....is there some way to interrogate the sky router to find out what values it's using?

mid_gen · 21 Nov 2020 at 11:29

mid_gen said:
My speed has dropped down to an actual rate of 30mb, 43 attainable. Also seeing up to 10% packet loss.

Started at 57 ish, dropping down to 44, now 30, which is starting to cause problems as two of us are working from home on the list.

No problems when I just had the Sky router, just since switching to the Draytek modem and Asus AC66u router.

Going to try swapping it back....is there some way to interrogate the sky router to find out what values it's using?

Sky router back in, packet loss is gone.

Line is testing at 27 down, 6 up though. Think I need to leave the Sky router in for a few weeks to stabilise and find out wtf is wrong with the Draytek and have it wreck me speeds again.

andy_mk3 · 21 Nov 2020 at 12:16

Might be worth trying a different firmware on the Draytek

mid_gen · 21 Nov 2020 at 14:46

no idea what said:
Might be worth trying a different firmware on the Draytek

3.8.4.1_BT I have on it.

mid_gen · 21 Nov 2020 at 17:56

Is there any way to help get my speeds back to the ~60mb I had originally?

Installing the Draytek 130 and having it take a dump on my line and drag it down to 27mb is pretty annoying.

Am I going to have to get onto Sky to get the line reset, or do I just need to leave it for a while back on the Sky router?

Cenuij · 23 Nov 2020 at 13:07

Line is now active after moving in - I'm past the 48 hour "ignore period" and into the 10 day DLM learning phase.

Here's my stats, should I increase the snr margin a little for stability during this phase? note it's currently at -30

Code:

Vigor> vds st
  ---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :      17A       State                : SHOWTIME
   DS Actual Rate          : 79997000 bps   US Actual Rate       : 19999000 bps
   DS Attainable Rate      : 83108296 bps   US Attainable Rate   : 23435000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :        1       US Interleave Depth  :        1
   NE Current Attenuation  :       17 dB    Cur SNR Margin       :        3  dB
   DS actual PSD           :     6. 9 dB    US actual PSD        :    12. 7  dB
   NE CRC Count            :        0       FE CRC Count         :      152
   NE ES Count             :        0       FE  ES Count         :       67
   Xdsl Reset Times        :        0       Xdsl Link  Times     :        1
   ITU Version[0]          : fe004452       ITU Version[1]       : 41590000
   VDSL Firmware Version   : 05-07-06-0D-01-07   [with Vectoring support]
   Power Management Mode   : DSL_G997_PMS_L0
   Test Mode               : DISABLE
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :       19 dB    Far SNR Margin       :        7  dB
   CO ITU Version[0]       : b5004244       CO ITU Version[1]    : 434dc190
   DSLAM CHIPSET VENDOR    : < BDCM >
Vigor> vds snr
Usage:
vdsl snr [delta]
  delta: SNR margin delta. The SNR margin delta should range from -50 to 50.
  delta=1 means 0.1dB.
  Current VDSL SNR Margin is 3 dB.
  Current VDSL SNR Margin delta setting is -30.
Vigor> v s more
  ---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
                  Near End        Far End    Note
 Trellis      :      1               1
 Bitswap      :      0               1
 ReTxEnable   :      0               1
 VirtualNoise :      0               0
 20BitSupport :      0               0
 LatencyPath  :      0               0
 LOS          :      0               0
 LOF          :      0               0
 LPR          :      0               0
 LOM          :      0               0
 SosSuccess   :      0               0
 NCD          :      0               0
 LCD          :      0               0
 FECS         :      0             458 (seconds)
 ES           :      0              67 (seconds)
 SES          :      0               0 (seconds)
 LOSS         :      0               0 (seconds)
 UAS          :     30            80993 (seconds)
 HECError     :      0               0
 CRC          :      0             152
 RsCorrection :      0               0
 INP          :      0             190 (symbols)
 InterleaveDelay :      0              16 (1/100 ms)
 NFEC         :    240              32
 RFEC         :      0              16
 LSYMB        :   5028              16
 INTLVBLOCK   :    120              32
 AELEM        :      0            ----
Vigor>

ChrisD. · 23 Nov 2020 at 13:09

Cenuij said:
Here's my stats, should I increase the snr margin a little for stability during this phase? note it's currently at -30

I would just leave it alone.

Cenuij · 23 Nov 2020 at 14:30

no idea what said:
As above it's a PITA to get working. My sysadmin friend got it set up for me with VLANs.

These are my settings I shared some time ago, I'm using pfSense so will be a little different than your Asus router.

https://imgur.com/gallery/Xykm7Cf

You can just tunnel the telnet or http port (should work in powershell as well as linux shells) - you'd need a psuedo or virtual/macvlan ethernet

Code:

# USG/UDM section for gateway.json
"interfaces": {
    "pseudo-ethernet": {
      "peth0": {
        "address": [
          "192.168.2.2/24"
        ],
        "link": "eth0"
      }
    }
  }

# linux add a macvlan type to the physical interface, distro dependent to make permanent

ip link add peth0 link eth0 type macvlan mode bridge

# ssh command should be equivalent in powershell

ssh -L 8080:[LAN IP of Vigor 130]:80 [LAN IP of USG/UDM//router etc]

e.g.

ssh -L 8080:192.168.2.1:80 192.168.1.1

Open browser on localhost:8080

Edit: should probably point out not all edge devices / routers have ssh access and need to add virt ethernet on the wan interface

mid_gen · 24 Nov 2020 at 07:31

mid_gen said:
Is there any way to help get my speeds back to the ~60mb I had originally?

Installing the Draytek 130 and having it take a dump on my line and drag it down to 27mb is pretty annoying.

Am I going to have to get onto Sky to get the line reset, or do I just need to leave it for a while back on the Sky router?

Line has been recovering...I'm back to 37/15 and no packet loss.

Still scratching my head as to what's wrong with the Draytek...same RJ11 cable. Bridge mode, DHCP option 61. Nothing else changed

mid_gen · 13 Jan 2021 at 12:00

So, update on my Vigor 130 problems. I'm now convinced it was simply overheating. I had it sat on top of my AC66U, which gets fairly warm as is. The Vigor 130 was getting really warm.

Got them set up separately now, running for a couple of weeks and the line is stable at 45/14. Been some occasional days where there's some packet loss, but OpenReach have been buggering about in the village for months now....hoping it the FTTP rollout...

David Taylor · 19 Jan 2021 at 18:09

macdude said:

I've been having some issues tweaking my SNR to improve by downstream rate. I'm seeing an attainable DS rate of about 52Mbps but actual DS rate of about 45Mbps, I'd like to push it up if possible. US rate is capped out with both actual and attainable at 18.7Mbps.

I set the SNR margins delta to -50 but it made no change to the current SNR margin -- why might that be?

Code:

> vdsl st
  ---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :      17A       State                : SHOWTIME
   DS Actual Rate          : 44916000 bps   US Actual Rate       : 18752000 bps
   DS Attainable Rate      : 51893040 bps   US Attainable Rate   : 18752000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :        0       US Interleave Depth  :        0
   NE Current Attenuation  :       20 dB    Cur SNR Margin       :        6  dB
   DS actual PSD           :     7. 8 dB    US actual PSD        :    13. 1  dB
   NE CRC Count            :        0       FE CRC Count         :        0
   NE ES Count             :        0       FE  ES Count         :        0
   Xdsl Reset Times        :        0       Xdsl Link  Times     :        4
   ITU Version[0]          : b5004946       ITU Version[1]       : 544e0000
   VDSL Firmware Version   : 05-04-08-00-00-06
   Power Management Mode   : DSL_G997_PMS_L0
   Test Mode               : DISABLE
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :        0 dB    Far SNR Margin       :        6  dB
   CO ITU Version[0]       : b5004244       CO ITU Version[1]    : 434db12d
   DSLAM CHIPSET VENDOR    : < BDCM >
> vdsl sn -50
ADSL SNR update successfully !
Restarting modem ...
> vdsl st 
  ---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :      17A       State                : SHOWTIME
   DS Actual Rate          : 44456000 bps   US Actual Rate       : 18696000 bps
   DS Attainable Rate      : 51366400 bps   US Attainable Rate   : 18696000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :        0       US Interleave Depth  :        0
   NE Current Attenuation  :       19 dB    Cur SNR Margin       :        6  dB
   DS actual PSD           :     7. 8 dB    US actual PSD        :    13. 1  dB
   NE CRC Count            :        0       FE CRC Count         :        0
   NE ES Count             :        0       FE  ES Count         :        0
   Xdsl Reset Times        :        0       Xdsl Link  Times     :        5
   ITU Version[0]          : b5004946       ITU Version[1]       : 544e0000
   VDSL Firmware Version   : 05-04-08-00-00-06
   Power Management Mode   : DSL_G997_PMS_L0
   Test Mode               : DISABLE
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :        0 dB    Far SNR Margin       :        6  dB
   CO ITU Version[0]       : b5004244       CO ITU Version[1]    : 434db12d
   DSLAM CHIPSET VENDOR    : < BDCM >

I have the same problem. If I set the SNR margin delta using a negative number, this seems to have no effect on the "Cur SNR Margin" reported by "vdsl status". I've tried "vdsl snr -20", "vdsl snr -30" and "vdsl snr -50" and this just increases the "DS Attainable Rate", but the "Cur SNR Margin" does not change and neither does the "DS Actual Rate".

Code:

Vigor> vdsl snr
Usage:
vdsl snr [delta]
  delta: SNR margin delta. The SNR margin delta should range from -50 to 50.
  delta=1 means 0.1dB.
  Current VDSL SNR Margin is 7 dB.
  Current VDSL SNR Margin delta setting is -50.

Does the "DS Actual Rate" need a few days to adjust? Look at the difference between the actual rate and the attainable rate I have now:

Code:

Vigor> vdsl status
  ---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :      17A       State                : SHOWTIME
   DS Actual Rate          : 48999000 bps   US Actual Rate       : 12000000 bps
   DS Attainable Rate      : 72332200 bps   US Attainable Rate   : 13893000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :        1       US Interleave Depth  :        1
   NE Current Attenuation  :       19 dB    Cur SNR Margin       :        7  dB
   DS actual PSD           :     7. 7 dB    US actual PSD        :    13. 1  dB
   NE CRC Count            :        0       FE CRC Count         :      164
   NE ES Count             :        0       FE  ES Count         :      118
   Xdsl Reset Times        :        0       Xdsl Link  Times     :        2
   ITU Version[0]          : fe004452       ITU Version[1]       : 41590000
   VDSL Firmware Version   : 05-07-06-0D-01-07   [with Vectoring support]
   Power Management Mode   : DSL_G997_PMS_L0
   Test Mode               : DISABLE
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :       28 dB    Far SNR Margin       :        7  dB
   CO ITU Version[0]       : b5004244       CO ITU Version[1]    : 434da4a1
   DSLAM CHIPSET VENDOR    : < BDCM >

Firware version = 3.8.4.1_BT

andy_mk3 · 19 Jan 2021 at 19:09

You're at the limit on the upload speed which is why you wont get bumped onto a higher profile.

dante6491 · 20 Jan 2021 at 10:16

I have noticed the new Vigor 166 appears to be on sale in the UK. It is only the Gen1 (so up to 330Mbps) but presumably is a lot better on the inside than the 130.