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Author Topic: How much does your SNRM's drop  (Read 32581 times)

NewtronStar

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Re: How much does your SNRM's drop
« Reply #30 on: November 15, 2013, 11:58:56 AM »

Or did his total not reset at the last resync, I know BE1 said some do and some don't.

thats was something i was going to ask yourself or BE1 last week, as I can't remember if they did reset or not, when we had the Orginal Modems GUI and rebooted the hg612 from inside the GUI the totals did reset.
I guess I'll not know until next time when powering off the modem or "power cut  >:(", but thats not going to be untill my 14 day wait is over.

as for the columns you could make Field 25 US_RScorr smaller and make Field 24 DS_RSCorr bigger without havingto make the GUI window larger as the US gets less errors most of the time.

« Last Edit: November 15, 2013, 06:10:08 PM by NewtronStar »
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Bald_Eagle1

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Re: How much does your SNRM's drop
« Reply #31 on: November 15, 2013, 05:48:33 PM »

From memory, the HG612 can handle error counts up to a value of 2,147,483,648 before being reset to zero (2 ^ 31).
(It might even be 4,294,967,296, i.e. 2 ^ 32) ???


FEC/RSCorr are one & the same thing, but one of them is reset to zero following a Retrain Reason 2 resync (I can't recall which one) & they are both reset to zero following a Retrain Reason 0 resync.

I have no idea waht happens for other Retrain reasons as I only ever see reasons 0 & 2 on my own connection.


the delta value (change each minute) should still be the same for both though.




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NewtronStar

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Re: How much does your SNRM's drop
« Reply #32 on: November 15, 2013, 06:16:26 PM »

sorry BE1 i edited last post after you posted so i removed it .

I have a constant DS FEC 1200 errors per min * 60 = 72000 in 1 hour * 24hr (day) 1,728,000
* 6 days = 10,368,000 so it looks like the totals were not reset.

I have not had a retrain 0 since the 8th of november 6/7 days ago why it's showing 532,954,772 when it should 10 million for 6/7 days  :-\
« Last Edit: November 15, 2013, 06:43:31 PM by NewtronStar »
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Bald_Eagle1

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Re: How much does your SNRM's drop
« Reply #33 on: November 15, 2013, 07:06:50 PM »

I'm not 100% sure, but I think DSLStats averages some data, such as FEC errors.

HG612 Modem Stats reports the differences minute by minute.

It is quite possible that FEC/RSCorr actaually peak here & there.

I have attached my recent DS FEC/RSCorr graphs to demonstrate what actually happens on my connection.
Unfortunately, I don't have any DSLStats graphs from the same period for comparison.

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NewtronStar

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Re: How much does your SNRM's drop
« Reply #34 on: November 15, 2013, 07:17:37 PM »

I think this may shock you when you look at my graphs

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Bald_Eagle1

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Re: How much does your SNRM's drop
« Reply #35 on: November 15, 2013, 07:32:15 PM »

CRC looks O.K.(ish) but FEC is working hard.

Is it only like that in the evenings or is it constant?

The value per minute is massively different to that shown by DSLStats.
Do you actually see that huge amount when looking at FEC (total) in Ronski's GUI? (& minute-by-minute in xlogfile.txt)?


 
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roseway

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Re: How much does your SNRM's drop
« Reply #36 on: November 15, 2013, 07:37:24 PM »

I'm not 100% sure, but I think DSLStats averages some data, such as FEC errors.

No, the FEC and CRC per minute graphs are calculated and plotted on a sample-by-sample basis. But the snapshot posted by NewtronStar is very strange - I've never seen a straight line like that, which makes me suspect that it's an error.

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  Eric

GigabitEthernet

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Re: How much does your SNRM's drop
« Reply #37 on: November 15, 2013, 07:49:31 PM »

Our SNRM drops by about 4-5dB, but we have a REIN fault on the line currently, so that's probably the cause.
« Last Edit: November 15, 2013, 08:21:58 PM by AlecR »
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NewtronStar

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Re: How much does your SNRM's drop
« Reply #38 on: November 15, 2013, 07:54:24 PM »

CRC looks O.K.(ish) but FEC is working hard.

Is it only like that in the evenings or is it constant?

The value per minute is massively different to that shown by DSLStats.
Do you actually see that huge amount when looking at FEC (total) in Ronski's GUI? (& minute-by-minute in xlogfile.txt)?

it's why i made this thread in the first place BE1 when DS SNRM drops the attainable sync drops in the evenings and FEC errors rank up like theres no tomorrow.

Yes I can see it also in Ronski's GUI it 's been like this since those firmware updates sure you know me I only complain when it's serious, and have a graph of FEC errors from July and it's like chalk and Cheese unless i am missing something.
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NewtronStar

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Re: How much does your SNRM's drop
« Reply #39 on: November 15, 2013, 08:03:33 PM »

I'm not 100% sure, but I think DSLStats averages some data, such as FEC errors.

No, the FEC and CRC per minute graphs are calculated and plotted on a sample-by-sample basis. But the snapshot posted by NewtronStar is very strange - I've never seen a straight line like that, which makes me suspect that it's an error.

Don't tell me the error is on my line   :(
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Ronski

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Re: How much does your SNRM's drop
« Reply #40 on: November 15, 2013, 08:04:30 PM »

If it's any consolation we're getting half a million FECs per minute at work, also only been like it since the firmware update, but I think we may be suffering from crosstalk, or a fault. Was on fastpath prior to the update.
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NewtronStar

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Re: How much does your SNRM's drop
« Reply #41 on: November 15, 2013, 08:15:01 PM »

If it's any consolation we're getting half a million FECs per minute at work, also only been like it since the firmware update, but I think we may be suffering from crosstalk, or a fault. Was on fastpath prior to the update.

Yes it does help Ronski ;)  I just don't know what to do here, but going to keep the modem on and see what happens be it more Interleaving or less Attainable speed, kind of thinking I should report a fault on my Broadband and get it over and done with.
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Ronski

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Re: How much does your SNRM's drop
« Reply #42 on: November 15, 2013, 10:01:40 PM »

I did report a fault, but because it recovered I got nowhere. When it first happened the connection was almost unusable,  then interleaving kicked in and it all started to work, albeit at a slower speed.
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roseway

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Re: How much does your SNRM's drop
« Reply #43 on: November 15, 2013, 10:36:26 PM »

Don't tell me the error is on my line   :(

:)
I was actually wondering if you'd found a bug in DSLstats.
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  Eric

NewtronStar

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Re: How much does your SNRM's drop
« Reply #44 on: November 15, 2013, 10:51:33 PM »

I did report a fault, but because it recovered I got nowhere. When it first happened the connection was almost unusable,  then interleaving kicked in and it all started to work, albeit at a slower speed.

What I have noticed since this update is the DLM is inducing higher interleaving on marginal lines, I could be wrong but that should reduce the FEC errors but another thing that appears on my line is the attainable is able to go much higher than the line can cope with so it's conflicting with the DLM's attributes and in basic terms it's made a mess of my line.
« Last Edit: November 15, 2013, 11:41:28 PM by NewtronStar »
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