THG 3000 error packets

[omar121212]

Hi I have a THG 3000 router with the line activated 9 days ago.

The line has remained fairly solid with no drop outs with a good downlaod rate of 70mbs

Checking the router stats I read the below with RS correctable errors at 699. This will increase over a 24-48 hour period to 7000 odd or so. The modem is plugged directly into a filtered plate socket with no telephone sockets plugged in. I have disconnected any sockets from lan and just have wireless devices connected.

I previously had a BT modem on a slower package which got 0 error packets however this was syncing at 38mbs with a SNR of 14 and I was using a TP link archer modem. I did temporarily try my archer modem also on vodafone and it was getting a similar amount of errors as the THG 3000.

I am hoping to clarify the significance of these error packets on my THG 3000 and whether they should be left and not worry about them as the line seems stable? or whether this needs further action

thanks

DSL Status Information

DSL Mode

ITU-T G.993.2_Annex_B (VDSL2)

DSL Uptime

11 minutes and 7 seconds

Line Coding

DMT

Status

Connected

Number of Cuts

0

Link Power State

L0

Line Quality

	Downstream	Upstream
Current Rate	79999 kbps	19999 kbps
Maximum Rate	84387 kbps	22450 kbps
Signal-to-Noise Ratio	4.6 dB	7.3 dB
Attenuation	DS1 11.3 dB, DS2 28.5 dB, DS3 44.7 dB	US0 3.5 dB, US1 22.5 dB, US2 35.8 dB
Power	12.6 dBm	7.1 dBm
CRC Errors in last 11 minute(s)	0	0
K (number of bytes in DMT frame)	0	0
R (number of bytes in RS code word)	8	16
S (RS code word size in DMT frame)	0.0647	0.3781
D (interleaver depth)	8	1
Delay	0 ms	0 ms
	Downstream	Upstream
Super Frames	0	168073
Super Frame Errors	0	0
RS Words	41045448	7055970
RS Correctable Errors	699	0
RS Uncorrectable Errors	0	0

	Downstream	Upstream
HEC Errors	0	0
OCD Errors	0	0
LCD Errors	0	0
Total Cells	102764257	0
Data Cells	203672	0
Bit Errors	0	0
	Downstream	Upstream
Total ES	0	0
Total SES	0	0
Total UAS	28	28

[Anonymous]

Hi @omar121212 I've had a look into this, and what you're experiencing is pretty normal and nothing to worry about 😀  So long as your line is stable, no further action is needed here, but if you do start noticing any drops in speed or line stability, I'd definitely recommend giving us a call on 0333 3040 191

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[Anonymous]

Omar, I think I mentioned a few things previously but you might want to have a look at https://forum.kitz.co.uk/index.php?board=45.0 for a bit of a heads up on VDSL2 errors and the like.

In the meantime, I've been running DSLSTATS on my Huawei HG612 modem (I'll switch back to the faster Vigor 130 as soon as I can...)  So here are a few screenshots:

This show the bit loading (how many bits per tone) per tone on my current 44Mbps connection.  As you can see there are only 3500 tone channels out of 4096, in part due to my being 700m from the cabinet.  You can also see the SNR per tone superimposed, so that you can see how lower SNRs reduce the number of bits per tone!

This graph shows the Bit swaps per tone, which is another way of mitigating the effects of noise.

This is the number of times Forward Error Correction came into play during just over an hour of (stressed) recording.  I would post the graph that showed the actual number of errors that got through the net and needed re-transmission, but as there were only TWO frames, and both uplink not the downlink, it's a pretty boring graph.

VDSL2 like VDSL and ADSL before it are not designed to be error-free, but rather accept that errors will happen, and deal with them quickly and quietly!