VDSL Performance & Tuning

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856 posts

Ultimate Geek

#1417308 30-Oct-2015 20:08

hio77: Yep, the move to 998 is right there. Obviously your on a borderline connection, but overall, not bad.

@Psilan was your resync INP turning on? im seeing a common trait here....

seems to be the case, Broadcom linecards are limited to 100/50 while Ikanos line cards are 70/30. A post from a chorus fellow did imply this was going to be the case awhile back...

So far, i have noticed broadcoms on average managing higher speeds, although there are too many variables to seriously make a conclusion like that. could just be chance.

I should suggest they upgrade to broadcom ;).
We don't get fibre here until after August next year.

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hio77

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Lizard Networks

#1417310 30-Oct-2015 20:09

Psilan:
hio77: Yep, the move to 998 is right there. Obviously your on a borderline connection, but overall, not bad.

@Psilan was your resync INP turning on? im seeing a common trait here....

seems to be the case, Broadcom linecards are limited to 100/50 while Ikanos line cards are 70/30. A post from a chorus fellow did imply this was going to be the case awhile back...

So far, i have noticed broadcoms on average managing higher speeds, although there are too many variables to seriously make a conclusion like that. could just be chance.

I should suggest they upgrade to broadcom ;).
We don't get fibre here until after August next year.

And that fact, is why they should be consistent....

pay off the techs! -_-

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Athlonite

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#1417355 30-Oct-2015 20:38

@ hio77 Do you know how quickly they're rolling out the 998 upgrade to cabinets

Jase2985

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#1417359 30-Oct-2015 20:59

Athlonite: @ hio77 Do you know how quickly they're rolling out the 998 upgrade to cabinets

dont think anyone knows that except those involved. I havent seen anything on here about it.

But looking at it, it started a couple of days ago, and has become quiet widespread, so hears hoping in the next week or so everyone will get sorted

Psilan

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Ultimate Geek

#1417361 30-Oct-2015 21:01

Found an old screenshot. INP was 0.0 dn / 0.1 up previously.

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hio77

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Lizard Networks

#1417363 30-Oct-2015 21:09

Apart from when its expected to finish, No. That is really no indication on anything too.

Based off the extremely rapid expansion the last few days though... i would say we are on our way in.

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Lally

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Master Geek

#1421761 5-Nov-2015 16:14

Well happy, moved to 998 early this morning here in Parakai.
Have gone from 28mbps to 47mbps.

Started out on 20mbps but then removed some of the joins to other jackpoints (1 gel cap join in between) and ended on 28mbps, so I think I can squeeze out some more if I replace the cable from ETP and take it straight through to modem.

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SamF

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#1421843 5-Nov-2015 17:15

Do those of you who have been moved to 998 think that there is a re-training period once you change over; do your stats change much in the first couple of weeks?

DumKopf

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Master Geek

#1421850 5-Nov-2015 17:42

Here's my connection so far, pretty stable. I thought it was going to keep going down since it's pushing my copper pretty hard. But then it came back up ¯\_(ツ)_/¯

hio77

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Lizard Networks

#1421860 5-Nov-2015 17:59

DLM appears to be retraining after the change yes. very fast movements seen.

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SamF

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#1421869 5-Nov-2015 18:18

Well that's good. I got dumped off DLM-1 a couple of weeks ago for some unknown reason (I wasn't even SNR tweaking the line!), so am hoping that 998 will give me back my low latency :)

hio77

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Lizard Networks

#1421878 5-Nov-2015 18:26

998 lines tend to start on DLM-2 or DLM-4. takes a few days to drop back to DLM-1 havent seen enough lines to know the difference in error rates though.

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SamF

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#1432456 21-Nov-2015 23:25

Does anyone here run a Draytek Vigor 130 for their VDSL connection? I'm considering buying one, but I'm unsure if you can tweak the SNRM on them or not.

hio77

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Lizard Networks

#1432458 21-Nov-2015 23:34

AFAIK you can not snr tweak on the vigor130.

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SamF

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#1432461 21-Nov-2015 23:46

Pity, apparently it's a really good router. I did find this line in some recentish firmware notes for the Vigor 28xx series:

Telnet commands 'adsl snr' and 'vdsl snr' are now available in the VDSL firmware version only

AFAICS the 'vdsl snr' command changes the snr. So maybe later firmware for the 130 enables this command also?

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