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Author Topic: DNS servers  (Read 14025 times)

Golfer

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Re: DNS servers
« Reply #30 on: August 11, 2010, 11:00:55 AM »

Update

Hi All!

My profile has been changed to 6db and the speed seems to have settled down at around 4Mb mark average.  However, the error stats have gone through the roof!

CRC  dn/up    54/655503
FEC  dn/up    15915/65519
HEC  dn/up    485/0

These are from yesterday (10th Aug) but stats from other days are just as wild!  Reading the help pages on here tells me that these figures mean throughput will most likely be affected, thus cutting the speed.  What do I do?  Will things settle down over time or do I need another adjustment by TT?

btw, SNR Margin is also all over the place - from beginning dn 10/13 up, then dn 5.9/7.7 up, dn 2.2/6.6 up, dn 3/10.7 up

Any advice, please?

Regards

Rich

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roseway

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Re: DNS servers
« Reply #31 on: August 11, 2010, 11:09:51 AM »

I don't believe that those error stats are a problem. The reported upstream errors are probably reporting errors, not actual errors, and the downstream errors are not unreasonable. Just to check, is the CRC up figure correctly copied, or should it read 65503?
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  Eric

Golfer

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Re: DNS servers
« Reply #32 on: August 11, 2010, 12:04:36 PM »

I don't believe that those error stats are a problem. The reported upstream errors are probably reporting errors, not actual errors, and the downstream errors are not unreasonable. Just to check, is the CRC up figure correctly copied, or should it read 65503?


Oops!  Looks like I added an extra 5! 

On 7th Aug the figs read:
CRC d/u     37/65503             (as of 12.03pm 0/5 !)
FEC d/u     2782/65513
HEC d/u     625/0

Currently live stats are:
CRC d/u     389 / 65509
FEC d/u     6676 / 65451
HEC d/u     993 / 0

As I watch the router config page, these figures reset every 15secs or so and don't really seem to relate to the previous ones.  Reading the stats help page on here, it seems that this may be a sign of line instability and I might need to get the SNR Margin raised slightly to improve it?  (SNR stats have also varied - the default setting is 6db but this has reported as low as 2.2.)  I've re-posted some figures on the TT forum and am waiting for a reply.

I don't really understand too much of this so there is a bit of 'groping in the dark' going on!

Thanks for your help

Rich

 
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roseway

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Re: DNS servers
« Reply #33 on: August 11, 2010, 12:38:33 PM »

It's probably true to say that a higher noise margin would give lower error rates, but your figures aren't really bad. The FEC errors are quite normal with an interleaved connection - they are actually errors which have been automatically corrected by the FEC process which is part of the interleaving setup.

The reason I queried the upstream CRC figure is because it's not uncommon to see figures in this range reported by some routers. The figures are suspiciously close to 65535, which is the largest value which can be held in a 16-bit number. I suspect that these figures are the result of a small programming error in the router firmware, possibly caused by mixing up signed and unsigned integers. It's most unlikely that you would really see upstream errors so much greater than the downstream errors.
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  Eric

Zoe

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Re: DNS servers
« Reply #34 on: August 13, 2010, 09:29:16 PM »

Hi Rich  :)


Is Your Router.... Set To... Always ON  ?


Just Found This: http://www.talktalkmembers.com/forums/showthread.php?t=47886

Slightly different model number than your Huawei EchoLife HG520b

But...
As it sounded quite Complicated   ???

Quote
* To change the HG532 to always on (nailed up) you need to:
* open browswer and type 192.168.1.1 in the address bar, then press enter
* type "admin" for the username and password and press OK
* click on advanced in the left hand side menu
* click on OK to the advance user warning
* Click on "Basic" in the left hand side menu then WAN
* In the main window go down to "Dialling Method" and select "Auto" from the drop down menu
* Click the Submit button at the bottom of the screen to save settings.

Thought I should post it before I forgot where I found it  :blush:


Zoe
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Talk Talk - Faster Fibre: 38/10
Estimated Download Speed 39Mbps to 40Mbps.
Minimum Guaranteed Speed 35Mbps
Actual Sync Speed 31Mbps Down & 8Mbps Up
Modem/Router: Netgear D6400

Golfer

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Re: DNS servers
« Reply #35 on: August 13, 2010, 11:51:36 PM »

Good evening Zoe and thank you!   ^-^

I've only just spotted your post as I've been merrily messing with my old Tiscali Siemens router.  TT forums pointed me in the right direction regarding setting it up and lo! I managed it  :) (Quite pleased with myself now!)  Oddly, it still shows Tiscali settings but only needed a username/password change to work!  I guess that as TT took over Tiscali the systems must be pretty much the same.

I will now monitor t'internet for a few days and see how I go.  Speed seems satisfactory at mo' and, more importantly, stable.

I can't thank you enough (and other contributors too!) for the time, effort and patience you have put into sorting me out.

All the best

Rich   :-*
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If you can keep your head when all about you
Are losing theirs and blaming it on you,
Run like **************!
AH 1945

Zoe

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Re: DNS servers
« Reply #36 on: August 14, 2010, 03:27:20 PM »

Hi Rich  :)


So Glad You're All Sorted!  8)

You know where to find us if your ever need more help  ;)


Zoe
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Talk Talk - Faster Fibre: 38/10
Estimated Download Speed 39Mbps to 40Mbps.
Minimum Guaranteed Speed 35Mbps
Actual Sync Speed 31Mbps Down & 8Mbps Up
Modem/Router: Netgear D6400
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