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51 posts

Master Geek
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Topic # 150104 11-Jul-2014 13:01
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Hi all,

I'm having some trouble with a brand new DrayTek Vigor 120 modem.  Previously I have been running a Linksys AM300 with sync speed of 7.9Mbps / 0.8Mbits until I started having problems.

Per the typical advice of telecom, I tried their router 2wire 2701HGV-W and was getting a sync rate of 8.8Mbps/1Mbps (see full details below)

 

Modem Type:     Built in modem - ADSL
DSL Line (Wire Pair):     Line 1 (inner pair)
Current DSL Connection:
    Down     Up
Rate:     8838 kbs     954 kbs
Max Rate:     8838 kbs     954 kbs
Noise Margin:     11.4 dB     13.0 dB
Attenuation:     30.3 dB     15.8 dB
Output Power:     18.9 dBm     12.0 dBm

Protocol:     G.DMT2+ Annex A
Channel:     Interleaved
DSLAM Vendor Information     Country: {46336} Vendor: {BDCM} Specific: {62113 }
ATM PVC:     0/100

Rate Cap:     8838 kbs
Attenuation @ 300kHz:     20.8 dB
Uncanceled Echo:     -15.8 dB     Ok
VCXO Frequency Offset:     -58.0 ppm     Ok
Final Receive Gain:     20.8 dB     Ok
Impulse Noise Comp. Tones:     0     Ok
Excessive Impulse Noise:     0

 



However, this modem has junk I don't want or need such as wireless, firewall that can't be disabled and DMZPlus mode that just doesn't work.

So I ordered a Vigor 120 in the hopes I could run PPPoA -> PPPoE bridged and get only what I need.  However, the sync speeds for this new modem are almost half of the other two.  Anywhere from 4.6Mbps to 5.5Mbps download.

--------------------------- ATU-R Info (hw: annex A, f/w: annex A) -----------
   DSL Modulation          : ADSL2+(G.992.5)
   State                   : SHOWTIME
   DS Actual Rate          :  5647496 bps   US Actual Rate       :  1001118 bps
   DS Attainable Rate      :  6692000 bps   US Attainable Rate   :  1001000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :       64       US Interleave Depth  :        1
   NE Current Attenuation  :       33 dB    Cur SNR Margin       :       14  dB
   DS actual PSD           :    18. 4 dB    US actual PSD        :    12. 1   dB
   ADSL Firmware Version   : 321311_A
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :       14 dB    Far SNR Margin       :       11  dB
   CO ITU Version[0]       : 00004244       CO ITU Version[1]    : 0000434d
   DSLAM CHIPSET VENDOR    : < BDCM >


It seems the DSLAM is using a broadcom chipset.  But the AM300 has a TI one and still was syncing faster.  I don't know my distance, but est based on 2wire attenuation of 1.5km.

Is there anything that can be done to get a better speed out of the vigor?  I've tried playing with the modulation but no luck.

I'm running the modem direct to a Linux box for firewall routing btw.

Cheers


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  Reply # 1087087 11-Jul-2014 13:13
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If you have just purchased the DV120 it is old stock. It was replaced with the DV130 over 6 months ago... Maybe up to a year ago.

Draytek.com.au has several different firmware versions for different dslam compatability. You could try these.




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  Reply # 1087129 11-Jul-2014 13:47
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Have you got a master filter installed. I've seen on good lines some of the highest sync rates using the 120, but often they do sync lower on poor lines for better stability




Chorus has spent $1.4 billion on making their xDSL broadband network faster. If your still stuck on ADSL or VDSL, why not spend from $150 on a master filter install to make sure you are getting the most out of your connection?
I install - Naked DSL, DSL Master Splitters, VoIP, data cabling and general computer support for home and small business.
Rural Broadband RBI installer for Ultimate Broadband and Full Flavour

 

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Master Geek
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  Reply # 1087130 11-Jul-2014 13:48
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Dynamic: If you have just purchased the DV120 it is old stock. It was replaced with the DV130 over 6 months ago... Maybe up to a year ago.

Draytek.com.au has several different firmware versions for different dslam compatability. You could try these.



I did just buy it on Ascent for $98. 

I did try the site http://www.draytek.com.au/downloads.php?type=Vigor120, but their latest firmware shows 3.2.4.4 3431301 from 2010 when the modem shows:

3.2.6 321311_A Hardware: Annex A


Should I have gotten the DV130 instead?  They have a nasty restocking fee for this kind of thing. :(



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Master Geek
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  Reply # 1087149 11-Jul-2014 13:52
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coffeebaron: Have you got a master filter installed. I've seen on good lines some of the highest sync rates using the 120, but often they do sync lower on poor lines for better stability


I'm renting and the landlord is not willing to allow anything.  But still, a 4.6 vs 8.8 is a huge gap.  And since two other chipsets/modems work at 8-9Mbps, I would expect the DV120 be at least close to that.  Even 7 would be better than 5ish.

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  Reply # 1087158 11-Jul-2014 13:58
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solorvox: Should I have gotten the DV130 instead?  They have a nasty restocking fee for this kind of thing. :(

Sorry, my bad.  I thought the DV130 was a replacement for the DV120 but I've just re-checked and I see the DV120 is a current product.  The DV130 is more expensive, but does VDSL as well.

You'll see at http://www.draytek.com.au/downloads.php?type=Vigor120 that they have different firmware versions for different modem codes "for getting better operability with different ISPs/ IPDSLAMs".  I've never taken the time to try these out on any of my Draytek devices.




"4 wheels move the body.  2 wheels move the soul."

“Don't believe anything you read on the net. Except this. Well, including this, I suppose.” Douglas Adams



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Master Geek
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  Reply # 1087167 11-Jul-2014 14:13
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Dynamic:
solorvox: Should I have gotten the DV130 instead?  They have a nasty restocking fee for this kind of thing. :(

Sorry, my bad.  I thought the DV130 was a replacement for the DV120 but I've just re-checked and I see the DV120 is a current product.  The DV130 is more expensive, but does VDSL as well.

You'll see at http://www.draytek.com.au/downloads.php?type=Vigor120 that they have different firmware versions for different modem codes "for getting better operability with different ISPs/ IPDSLAMs".  I've never taken the time to try these out on any of my Draytek devices.


Turns out it's actually version 2  Vigor120 here http://www.draytek.com.au/downloads.php?type=Vigor120v2

However, I can't seem to find a way to use their IOP modem codes to match a broadcom DSLAM.  I'd rather not try 10+ different firmwares looking for the right one. :p


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  Reply # 1087176 11-Jul-2014 14:24
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Someone else has looked into this 'which firmware' issue for you:  http://www.base64.co.nz/choosing-firmware-draytek-adsl-routers/ 




"4 wheels move the body.  2 wheels move the soul."

“Don't believe anything you read on the net. Except this. Well, including this, I suppose.” Douglas Adams



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Master Geek
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  Reply # 1087199 11-Jul-2014 14:34
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Cheers for that. 

However, it seems to have made no difference after flashing with that version.  Maybe a bit slower in fact.

  --------------------------- ATU-R Info (hw: annex A, f/w: annex A) -----------
   DSL Modulation          : ADSL2+(G.992.5)
   State                   : SHOWTIME
   DS Actual Rate          :  5461333 bps   US Actual Rate       :   980977 bps
   DS Attainable Rate      :  5792000 bps   US Attainable Rate   :   980000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :       64       US Interleave Depth  :        1
   NE Current Attenuation  :       33 dB    Cur SNR Margin       :       12  dB
   DS actual PSD           :    18. 4 dB    US actual PSD        :    12. 1   dB
   ADSL Firmware Version   : 332201_A
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :       14 dB    Far SNR Margin       :       11  dB
   CO ITU Version[0]       : 00004244       CO ITU Version[1]    : 0000434d
   DSLAM CHIPSET VENDOR    : < BDCM >

Defective modem maybe?  Or just not a good match for my DSLAM?

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  Reply # 1087216 11-Jul-2014 14:41
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Hmmmm... beyond my experience to comment any further.  We use the Draytek's quite extensively on commercial sites and have not seen any performance decreases when installing them.




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  Reply # 1087248 11-Jul-2014 15:26
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Are you in a 10Mbps zone according to the Chorus coverage maps?




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Master Geek
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  Reply # 1087263 11-Jul-2014 15:34
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sbiddle: Are you in a 10Mbps zone according to the Chorus coverage maps?



According to their website: http://www.chorus.co.nz/network-upgrade-map

 

Network capability:

 

  • Broadband > 10 Mbps

However, I've never seen over 8.8Mbps with any modem.  Is there way to find out how far I am from the exchange?

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  Reply # 1087383 11-Jul-2014 18:07
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That's pretty high attenuation for a 10Mbps zone. First thing is to really look at your internal wiring and eliminate that.




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Master Geek
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  Reply # 1087416 11-Jul-2014 19:08
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sbiddle: That's pretty high attenuation for a 10Mbps zone. First thing is to really look at your internal wiring and eliminate that.



That might explain the slower than 10Mbps, but what about the DV120 getting 5Mbps when two other modems get 8+?

Sure I'd like to improve the wiring, but since I'm renting not much I can do about that at the moment.

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  Reply # 1087427 11-Jul-2014 19:16
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solorvox:
sbiddle: That's pretty high attenuation for a 10Mbps zone. First thing is to really look at your internal wiring and eliminate that.



That might explain the slower than 10Mbps, but what about the DV120 getting 5Mbps when two other modems get 8+?



My first answer to that is wiring.

A bitloading graph would potentially explain a lot. Not all modems are created equally, and performance across all the bins can vary between different devices.







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Master Geek
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  Reply # 1087442 11-Jul-2014 19:31
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This might have what you want.  Typical sync speeds are 8.5 to 8.8Mbps with this modem, and 7.9Mbps - 8.4Mbps for the Linksys am300.

 

 

 

 

 

 

DSL Diagnostics - Training History

 

Physical Line 1

 

General Information

 

 

 

 

 

DSL Line (Wire Pair):

 

Line 1 (inner pair)

 

 

 

Downstream Rate Cap:

 

20004 kbps

 

 

 

Downstream Atten. at 300kHz:

 

20.9 dB

 

 

 

Uncancelled Echo:

 

-13.5 dB

 

Ok

 

 

 

VCXO Frequency Offset:

 

-52.3 ppm

 

Ok

 

 

 

Final Rx Gain:

 

20.8 dB

 

Ok

 

 

 

Impulse Noise Comp. Tones:

 

0

 

Ok

 

 

 

Excessive Impulse Noise:

 

0

 

Ok

 

 

 

Impulse noise protection:

 

2.00

 

 

 

Delay of latency path:

 

13.92 ms

 

 

 

 

 

Training History

 

 

 

 

 

 

 

Downstream

 

 

 

Upstream

 

 

 

Time

 

Line

 

 

 

Rate

 

Max1

 

Max2

 

Max3

 

Mgn1

 

Mgn2

 

Attn

 

Pwr

 

CRCs

 

FECs

 

INP

 

DLY

 

 

 

Rate

 

Max

 

Mgn

 

Attn

 

Pwr

 

CRCs

 

FECs

 

 

 

Mode

 

Vendor

 

State

 

Exit Code

 

Echo

 

VCXO

 

Rx Gain

 

INC Tones

 

 

 

2014/07/11 19:25:59 NZS

 

1

 

 

 

0

 

0

 

0

 

0

 

0.0

 

0.0

 

30.4

 

0.0

 

0

 

0

 

0.00

 

0.00

 

 

 

0

 

0

 

0.0

 

15.8

 

0.0

 

0

 

0

 

 

 

G.DMT2+ Annex A

 

Broadcom

 

223/93

 

ERR_INCONSISTENT_SIGNAL

 

-7.7

 

-52.6

 

20.8

 

0

 

 

 

2014/07/11 19:27:16 NZS

 

1

 

 

 

8542

 

8225

 

8237

 

8237

 

12.2

 

12.7

 

30.4

 

18.9

 

0

 

28

 

2.00

 

13.92

 

 

 

954

 

953

 

11.9

 

15.8

 

12.0

 

0

 

0

 

 

 

G.DMT2+ Annex A

 

Broadcom

 

236/104

 

N/A

 

-13.5

 

-52.3

 

20.8

 

0

 

 

 

 

 

Bitloading

 

 

 

 

 

 

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

 

 

 

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

 

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

 

0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 352 368 384 400 416 432 448 464 480 496 512

 

 

 

 

 

 

 

Notes

 

 

 

 

 

Time

 

Time of last update

 

 

 

Max1

 

Max. rate at start of connection

 

 

 

Max2

 

Current or final estimated max. rate

 

 

 

Max3

 

Current or final estimated max. rate without INC

 

 

 

Mgn1

 

Noise margin at start of connection

 

 

 

Mgn2

 

Current or final noise margin

 

 

 

DLY

 

Delay of latency path

 

 

 

 

 

 

 

 

 

 

 

 

 

 




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