Normal CRC error rate?
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- Re: Normal CRC error rate?
Normal CRC error rate?
03-03-2013 11:44 PM
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My connection seems to stall some times.
Looking at my router stats:
ADSL2+(G.992.5)
Up Speed:444937
Down Speed:14336000
SNR Margin:7
Loop Attenuation:32
I am getting 0.4% CRC on the RX.
RX packets (over 3 days) 12761850
RX CRC errors (over same period) 59750
Re: Normal CRC error rate?
04-03-2013 7:23 AM
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Re: Normal CRC error rate?
12-03-2013 3:32 PM
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I did have it changed once, but not sure if it stayed when I changed package.
Re: Normal CRC error rate?
12-03-2013 3:50 PM
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Re: Normal CRC error rate?
12-03-2013 6:28 PM
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Is there any other way to diagnose why my CRC error rate is high? The line itself doesn't sound noisy, and it's a brand new ADSLNation X1Fe faceplate filter (and nothing else connected).
It's now getting annoying, as it's impossible to stream LoveFlim without it stalling mid-way in HD (which requires a 3Mbps internet connection, despite having a 14Mbps connection)
Re: Normal CRC error rate?
12-03-2013 10:17 PM
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So it seems I at least have an option to force a slower speed that's more reliable. Would like to get the ADSL2+ stuff sorted out still thou.
Can someone explain the difference?
Re: Normal CRC error rate?
12-03-2013 10:35 PM
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Quote from: ClashcityRocker How can I tell if interleaving is enabled or disabled?
As you are using a Draytek 2820, try using telnet to login to the device, and type "adsl status" at the prompt.
For example in a command window -
> telnet 192.168.1.1
Account: <router-admin-username>
Password: <router-admin-password>
Type ? for command help
> adsl status
--------------------------- ATU-R Info (hw: annex A, f/w: annex A) -----------
Running Mode : G.DMT State : SHOWTIME
DS Actual Rate : 8128000 bps US Actual Rate : 448000 bps
DS Attainable Rate : 8128000 bps US Attainable Rate : 1328000 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 8 dB Cur SNR Margin : 14 dB
DS actual PSD : 15. 9 dB US actual PSD : 12. 3 dB
ADSL Firmware Version : 232201_A
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 4 dB Far SNR Margin : 30 dB
CO ITU Version[0] : 00005453 CO ITU Version[1] : 00005443
DSLAM CHIPSET VENDOR : < TI >
> quit
If your line IS interleaved then the DS and US "Path Mode" will say "Interleave",
of if NOT interleaved they will say "Fast" as shown above.
Hope that helps
Re: Normal CRC error rate?
12-03-2013 10:43 PM
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From this release note - http://www.draytek.co.uk/support/download/readme_v2820.txt
Quote Release Notes for Vigor2820 series
Firmware Version : 3.3.7.3 (Release)
Release Date : 12th October 2012
Build Date : 3rd October 2012
Applicable Models : Vigor2820, Vigor2820n, Vigor2820Vn, Vigor2820Vsn
ADSL Modem Code : 232201
Locale : UK Only / Annex A Only (inc UK Annex M)
******************************************************************************
IMPORTANT NOTE: Do not upgrade directly from 3.3.5 (and earlier) to 3.3.7.3.
Due to differences in the Web UI and functionality the router MUST first be
upgraded to 3.3.5.2 prior to upgrading to 3.3.7.3.
Upgrade your router to Version 3.3.5.2 first, and afterward upgrade the router
to Version 3.3.7.3.
NOTE: ADSL Modem Codes
For general purpose usage on UK lines, modem code 232201 is recommened
For ADSL2+ Annex M lines, the latest modem code 2471201 is suggested
For line speeds of less than 4Mbps, on lower quality lines a modem code with mor
conservative paramaters, 211801 is suggested.
Re: Normal CRC error rate?
12-03-2013 11:06 PM
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> adsl status
--------------------------- ATU-R Info (hw: annex A, f/w: annex A) -----------
Running Mode : ADSL2(G.992.3) State : SHOWTIME
DS Actual Rate : 9656888 bps US Actual Rate : 444937 bps
DS Attainable Rate : 10688000 bps US Attainable Rate : 1224000 bps
DS Path Mode : Interleave US Path Mode : Interleave
DS Interleave Depth : 64 US Interleave Depth : 1
NE Current Attenuation : 27 dB Cur SNR Margin : 6 dB
DS actual PSD : 19. 7 dB US actual PSD : 11. 9 dB
ADSL Firmware Version : 2471201_A
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 14 dB Far SNR Margin : 29 dB
CO ITU Version[0] : 00004946 CO ITU Version[1] : 0000544e
DSLAM CHIPSET VENDOR : < IFTN >
>
Re: Normal CRC error rate?
14-03-2013 6:03 PM
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