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85 posts

Master Geek


Topic # 27343 22-Oct-2008 19:35
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Hi All,

 

We're on an ADSL2+ enabled exchange, and DSL from Telstraclear, the supplied Dynalink router connects in ADSL2+ mode:

 

-----------------------------------------------------

Line Mode ADSL2+ Line State Show Time  
Line Power State L0 Line Up Time 00:00:33:06  
Line Coding Trellis On Line Up Count 1  

Statistics Downstream Upstream 
Line Rate 6558 Kbps 166 Kbps 
Attainable Line Rate 7492 Kbps 945 Kbps 
Noise Margin 12.0 dB 40.2 dB 
Line Attenuation 29.0 dB 13.9 dB 
Output Power 19.2 dBm 12.2 dBm 

-----------------------------------------------------

 

I also have a Draytek 2800VG sourced from Snappernet about 2 years ago. A really good unit, all the tricks in one box and stable.

 

The firmware it came with was Y.1.28.187, this appears to be ADSL1 ONLY according to the downloads page. Snappanet's download pages for the 2800VG links to that page also, so one would assume D.57.2.14 firmware would be for ADSL2+ in NZ..

 

I have installed Firmware 2.8.2, ADSL modem code D.57.2.14 (which appears to be the standard issue firmware), but it'll only connect in ADSL1/G.DMT mode when set to that in the config, if its set to the default of multimode, or ADS2+, it goes into a loop of handshake, training, handshake and so on..

 

There are other firmwares listed for sync issues, which is what I have? I could go through each one and try them, but wondered if anyone else has encountered this issue with Draytek routers in New Zealand?


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85 posts

Master Geek


  Reply # 172883 22-Oct-2008 21:05
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Well I got bored, so I have tried the AnnexA firmware's from Draytek.com:

 

AnnexA D.57.02.14 ADSL1 (only when modulation is set to G.DMT) (this is the "standard" firmware)
AnnexA D.16.02.01 Handshake, Training loop.
AnnexA D.79.42.14 ADSL2+
AnnexA E.67.02.12 ADSL1
AnnexA E.67.02.40 ADSL1
AnnexA E.67.02.52 ADSL1
AnnexA E.67.02.55 ADSL1
AnnexA E.67.36.01 ADSL1

 

The AU site lists AnnxM firmwares, from what I understand we are AnnexA, so I have not bothered to try them.

 

I'm running the D.79.42.14 firmware now, connected in ADSL2+ mode. The line speed is disappointing, its hardly faster than ADSL1!

 

ADSL Status Mode State          Up Speed Down Speed SNR Margin Loop Att.
ADSL2+       SHOWTIME             166200    4739900     12.0           29.5

 

The Dynalink syncs at around 6.5mbps..




85 posts

Master Geek


  Reply # 173084 23-Oct-2008 15:37
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Done some more testing today, tried the routers on the master jack with all other devices unplugged, didnt make any difference to the sync speeds.

 

The Draytek with its lower sync speed - in this case 5.3mbps vs the dyna's 6.5, FTPing a 20mb file from ftp.clear.net.nz (I'm on Telstraclear) the download speed was 495KB/s, with the dynalink the speed waverd around 450KB/s +/- 20KB/s, where the Dray was solid 495. One thing the Dray has in the QoS settings is Outbound TCP ACK Prioritize, which probably helps on a 128kbps upstream. I understand that the 128 upstream limits FS down speed.

 

Going to FS/FS will no doubt eek out a bit more speed, but since It's border line and I have no real use for more upstream bandwidth (am I the only person that doesnt try and download the entire internet each month?)..

 

So there you have it, I answered my own question! Hopefully this helps out other people who spashed out on Draytek's.


 
 
 
 


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  Reply # 173203 23-Oct-2008 21:56
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Thanks for the info,  I am looking at getting a 2700 which I think is newer so it may not have this issue.

Have you tried a different adsl 2+ modem on your line to see if the adsl2+ is up to scratch.

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  Reply # 173236 24-Oct-2008 01:39
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The Dynalink 1320's are suprising good modems in my experience.  They also support ppoa half bridge so you can just pickup something like a Linksys WRT54GL router for wireless and 4 network ports, chuck on the exceptionally good Tomato firmware and it will do everything you want pretty much.

My setup at home is similar to the setup in this guys blog post:
http://www.ben.geek.nz/adsl-routing-solution-in-detail/

Does one box/device matter that much to you?




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Master Geek


  Reply # 173337 24-Oct-2008 12:46
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Ragnor: The Dynalink 1320's are suprising good modems in my experience.  They also support ppoa half bridge so you can just pickup something like a Linksys WRT54GL router for wireless and 4 network ports, chuck on the exceptionally good Tomato firmware and it will do everything you want pretty much.

My setup at home is similar to the setup in this guys blog post:
http://www.ben.geek.nz/adsl-routing-solution-in-detail/

Does one box/device matter that much to you?

 

Yeap, does when I paid to get something that does _everything_decently_ in one box, which it does, now syncing around 5.8mbps, I suspect my line might be an issue. The SNR and and attenuation dont change, but I can get wildly different sync speeds just by resetting the router, anything from 4.5 up to 5.8. I'm also getting large numbers of corrected blocks at the ATM level, not sure how normal this is:

 

ADSL Information (ADSL Firmware Version: D.79.42.14 ) 
  ATM Statistics TX Blocks RX Blocks Corrected Blocks Uncorrected Blocks
                        212419   1298383      361017                 13

  ADSL Status Mode State Up Speed Down Speed SNR Margin Loop Att.
  ADSL2+ SHOWTIME          166200     5895800      11.5        30.0

 

I'm in the "CBD" zone of Whangarei, in the Regent. We are just about in the border between the central and kensington exchanges. We are on the central exchange side by about 500m at a guess. The central exchange is some distance from here, sort of the otherside of the "CBD" area. Does not appear to be plans for a cabinet anytime.

 

What you suggest appears to be a popular way to go, if I was looking at a new setup I'd most likely go that way.


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