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43 posts

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  #1759462 8-Apr-2017 13:57
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An Update: Although the Zyxel was a bit faster, I have gone back to the FritzBox .... I just could not get correct NAT forwarding working for my Plex server on the Zyxel.

 

Also, although the uplink was faster, web pages were slow loading compared to the FritzBox ... guess you just have to try these things ...

 

I also note, that when I place the FritzBox back into operation, my upload speed had gone upto 0.8Mbs, so it looks like the Zyxel forced the other end into a better mode..

 

.. anyway  I am off to return it back to the vendor ..

 

 

 

 


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  #1759495 8-Apr-2017 15:29
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likely you just connected at a better time and had a slightly different SNR or attenuation


 
 
 
 


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  #1759583 8-Apr-2017 20:28
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bmentink:

 

Also, although the uplink was faster, web pages were slow loading compared to the FritzBox ... guess you just have to try these things ...

 

 

 

 

This is the other thing with different modems, sometimes their Queuing makes them worse even if they seem better on paper.





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  #1759616 8-Apr-2017 21:51
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https://sp.chorus.co.nz/sites/default/files/files/diagnosis_driven_DLM_FAQs.pdf

 

 

 

Just out as of yesterday.

 

@samf refinements are likely on its way.





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  #1759624 8-Apr-2017 23:27
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Nice!  Where do you get this stuff man!? :) 

 

Looks like it will provide many more options for line settings & combos of settings which is great.  Doesn't look like it's performance oriented though, just stability, which is disappointing.  Still, some nice enhancements there!


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  #1767651 20-Apr-2017 00:22
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Im about 250 meters from the cabinet , is my downstream and upstream attenuation too high ?

 

 

 

Click to see full size

 

 

 

just rewired from the etp to the jackpoint today , am i better off getting a better modem ? the only thing else to do is open a pillar in the paddock and replace the connectors in terms of improving the wiring i think.

 

 

 

 


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  #1767690 20-Apr-2017 08:35
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seretonin:

 

Im about 250 meters from the cabinet , is my downstream and upstream attenuation too high ?

 

 

 

Click to see full size

 

 

 

just rewired from the etp to the jackpoint today , am i better off getting a better modem ? the only thing else to do is open a pillar in the paddock and replace the connectors in terms of improving the wiring i think.

 

 

 

 

 

 

 

 

You can possibly squeeze a few more Mbit with a new modem (I gained 5mbit when switching between fritzbox models) however with your line attenuation you are getting a pretty good speed, not sure if you will get much more. I would be waiting for the DLM changes to kick in and then see if its worth it to you


 
 
 
 


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  #1767692 20-Apr-2017 08:37
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thats a pretty solid line for 8b, i would await 17a to possibly be switched to.

 

 





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  #1767704 20-Apr-2017 09:03
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seretonin:

 

Im about 250 meters from the cabinet , is my downstream and upstream attenuation too high ?

 

 

 

Click to see full size

 

 

 

just rewired from the etp to the jackpoint today , am i better off getting a better modem ? the only thing else to do is open a pillar in the paddock and replace the connectors in terms of improving the wiring i think.

 

 

 

 

 

 

Your attenuation seems pretty high for a 250m run to the cabinet, but your sync speeds are great - especially with a 12dB SNR. My house is about the same distance from the cabinet, and I have 8dB attenuation - but only sync at 48/7 with a 9dB SNR.

 

With a 12dB SNR you have room to move, and will probably gain some decent speed from the coming DLM changes, especially if you get bumped to 17a. I wonder if your modem is misreporting your attenuation?


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  #1767736 20-Apr-2017 09:40
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12db is a valid training margin for dlm.

Time may change the training value.
DdDLM will make this happen faster.




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  #1772885 30-Apr-2017 15:43
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was pretty impressed when i checked my modem last , just hoping i get on a better profile soon

 

 

 

 




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  #1790667 28-May-2017 15:50
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Well!  After a few Internet outages in rapid succession recently I took a look at my line stats:

 

 

Obviously my cabinet has had some recent upgrades because I'm now on 17A with 70/30mbit connect speeds!  I'm pretty surprised about that given my estimated line distance is ~300m!

 

Also, given that my attainable line speed is still quite a lot higher than my actual, I'm hoping for a bit more speed in the longer term, plus hopefully a bit of a reduction in the Interleaving in the end!

 

Upstream CRCs are a little on the high side, but those stats seem to be persistent as restarting the router didn't change them, plus they're not going up any further.

 

All in all I'm pretty impressed considering that the same line was getting only ~40mbits a few years ago when it was first connected!


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  #1790678 28-May-2017 16:28
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SamF:

 

Well!  After a few Internet outages in rapid succession recently I took a look at my line stats:

 

 

Obviously my cabinet has had some recent upgrades because I'm now on 17A with 70/30mbit connect speeds!  I'm pretty surprised about that given my estimated line distance is ~300m!

 

Also, given that my attainable line speed is still quite a lot higher than my actual, I'm hoping for a bit more speed in the longer term, plus hopefully a bit of a reduction in the Interleaving in the end!

 

Upstream CRCs are a little on the high side, but those stats seem to be persistent as restarting the router didn't change them, plus they're not going up any further.

 

All in all I'm pretty impressed considering that the same line was getting only ~40mbits a few years ago when it was first connected!

 

 

 

 

It is the recent ddDLM upgrade doing its magic. I do think ddDLM has pushed your up stream sync rate too hard resulting in quite a lot of CRC. ddDLM may pair back th sync speed in coming few days.

 

In my case, ddDLM was quite aggressive in pushing up sync speed and then pairing back when the error rate is too high. Apparently this is how ddDLM is supposed to work.


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  #1790862 29-May-2017 06:00
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@samF doubt you will see more as you are likely on a ikanos line card and you are maxing that out. they do report they can obtain higher speeds but they are stuck at 70/30.

 

the newer boardcom cards can do 100/50


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  #1790969 29-May-2017 10:34
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Ikanos line, yep you are stuck there.

 

 

 

Nice improvement however! this is the wonder ddDLM has bought us!





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