VDSL Performance & Tuning

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#1108631 14-Aug-2014 20:04

Hmm.. Interesting theory.

It's plugged straight into the wall, but I still might consider getting an UPS.

I've lowered my Line Settings down to the middle settings and this has dropped it down to 6/min. Still not good! :(

hio77

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#1108721 14-Aug-2014 22:35

DumKopf: Hmm.. Interesting theory.

It's plugged straight into the wall, but I still might consider getting an UPS.

I've lowered my Line Settings down to the middle settings and this has dropped it down to 6/min. Still not good! :(

6/min is a little high still.

how long are you giving a connection uptime before taking these stats?

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DumKopf

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#1108796 15-Aug-2014 08:39

hio77:

how long are you giving a connection uptime before taking these stats?

Hour or so. But the errors are constantly coming up (can watch the counter going up).

Looks like my profile got switched from "Fast" to "8 ms" last night.

Errors dropped to 0. But still running 50% performance on the line settings, any higher and the errors start showing up again.

DumKopf

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#1112462 20-Aug-2014 21:52

That's interesting. One of the more interesting/useful graphs of DSL information, and it's only available as a 24 hour email..

You should be able to view this information any time, surely!

hio77

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#1112467 20-Aug-2014 22:06

You can do it for current utilization. I'm yet to find a way to get the timespan graph though.

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tanivula

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#1115391 25-Aug-2014 17:50

DumKopf:
hio77:

how long are you giving a connection uptime before taking these stats?

Hour or so. But the errors are constantly coming up (can watch the counter going up).

Looks like my profile got switched from "Fast" to "8 ms" last night.

Errors dropped to 0. But still running 50% performance on the line settings, any higher and the errors start showing up again.

Leave it be and it'll come right....
When I first got VDSL up and running I had a 39/10 connection (DLM-1 sraight off the bat). I started seeing lots of errors after 4hrs or so of a power cycle and eventually after a few days it dropped a couple of DLM's.

Seeking guidance, I dropped my intended signal-to-noise ratio to the middle notch and consequently saw a decrease in speed 36/10 and those nasty errors. Fast forward a few weeks, with those same settings, I'm back at DLM-1 and strangely, I've now got a 40/10 connection and errors aren't too bad.

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Jase2985

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#1118339 30-Aug-2014 07:25

Does a port reset require me to restart my modem?

hio77

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#1118377 30-Aug-2014 09:21

Jase2985: Does a port reset require me to restart my modem?

no. generally your connection will disconnect for a moment though.

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Jase2985

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#1118422 30-Aug-2014 10:31

thanks

hio77

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#1121941 4-Sep-2014 15:45

So,

after over 3 months of holding a solid 60/10 17a sync... with next to no errors.

this morning i got wacked with over 1000 errors... instantly dropped the line.

over the next few hours this continued before i noticed it was happening...

even got as low as 30/10 on 17a while it was trying to recover itself!

Watching the modem, i could see my SNR bouncing between 19 and -3 (but not the fireware bug, it was actually moving up and down in order.. 19-18-17 etc..)

Upon pushing snap to not just monitor it, but actually log a fault (ty TimA for this advice) ... resynced at 50/10 no errors.. no snr bouncing..

Guess ill watch it, and speak to them about cancelling the call out if it stabilizes.. - no foreseeable fault, that sounds like a "no fault found" case to me!

Goes to show, a line can take a dump at any moment, when your least expecting it!

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charsleysa

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#1122031 4-Sep-2014 17:35

hio77: So,

after over 3 months of holding a solid 60/10 17a sync... with next to no errors.

this morning i got wacked with over 1000 errors... instantly dropped the line.

over the next few hours this continued before i noticed it was happening...

even got as low as 30/10 on 17a while it was trying to recover itself!

Watching the modem, i could see my SNR bouncing between 19 and -3 (but not the fireware bug, it was actually moving up and down in order.. 19-18-17 etc..)

Upon pushing snap to not just monitor it, but actually log a fault (ty TimA for this advice) ... resynced at 50/10 no errors.. no snr bouncing..

Guess ill watch it, and speak to them about cancelling the call out if it stabilizes.. - no foreseeable fault, that sounds like a "no fault found" case to me!

Goes to show, a line can take a dump at any moment, when your least expecting it!

Be careful, I keep getting an issue where my 30/10 with no errors starts to error during some weekends and drops to 1/6 but every time chorus finally comes to take a look it's back to 30/10 so they say they can't do anything about it.

Regards
Stefan Andres Charsley

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hio77

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#1122040 4-Sep-2014 17:39

charsleysa:

Be careful, I keep getting an issue where my 30/10 with no errors starts to error during some weekends and drops to 1/6 but every time chorus finally comes to take a look it's back to 30/10 so they say they can't do anything about it.

yep.. that is looking to be the case.....

going to cancel the callout i think... its stabled out now...

although DLM-1 will be GG ild say.

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hio77

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#1122072 4-Sep-2014 18:43

Well.

callout is all cancelled.... now its time to setup a few more stat collectors for the next time this happens, so i have very detailed logs to send away.....

probably something touching, but i cant see it!

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charsleysa

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#1122096 4-Sep-2014 19:24

hio77: Well.

callout is all cancelled.... now its time to setup a few more stat collectors for the next time this happens, so i have very detailed logs to send away.....

probably something touching, but i cant see it!

What kind of logging can you do that will actually be of use?

Regards
Stefan Andres Charsley

hio77

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#1122124 4-Sep-2014 20:24

charsleysa:
hio77: Well.

callout is all cancelled.... now its time to setup a few more stat collectors for the next time this happens, so i have very detailed logs to send away.....

probably something touching, but i cant see it!

What kind of logging can you do that will actually be of use?

moreso logging to tell when it happens, find the common theme in it...

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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

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