VDSL Performance & Tuning

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Lizard Networks

#1153681 14-Oct-2014 15:17

DumKopf: Ah yep. Thanks for that.

/waits for fibre.

absolutely a good option.

by the time it comes out for you, ild say snap will have a 200/200 out too!

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Psilan

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#1170356 6-Nov-2014 21:37

Upgraded fritzbox today, nice increases;

Voyager referral - https://refer.voyager.nz/68QKJ8XKK

Stan

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#1182476 24-Nov-2014 23:08

Not fritzbox or snap related but this seems to be the place for VDSL chat

So I was put on 17a today, my question is am I likely to be automatically taken off it with my error rate/attenuation?

hio77

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#1182492 25-Nov-2014 00:49

Your snr is a tad odd.

Your errors are pretty marginal to say the least, ild say your good.

attenuation pre 17a was what? 8dB?

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Stan

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#1182600 25-Nov-2014 09:57

Don't remember I was syncing at 45meg but had it manually changed to 17a to see if it would be stable

TommySharp

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#1189521 5-Dec-2014 17:20

Who does one talk to in order to find out what their current profile is and maybe get it reviewed?

My upload speed is pretty decent at 10Mb, just thought the downloads would be faster seeing as though the cabinet is at my front gate...

My telecom modem doesn't tell me what profile I'm on.... Just these details...

Uptime 07Days 18hrs 26min 54sec
Time connected 07Days 18hrs 25min 19sec
Modulation type G.993.2-A
Actual rate (up) 10348 kbps
Actual rate (down) 33968 kbps
Data transferred (sent) 0 kB
Data transferred (received) 0 kB
Output power (up) 13.5 dBm
Output power (downstream) 429496710.5 dBm
Line attenuation (up) 0 dBm
Line attenuation (downstream) 4.7 dB
Noise margin (up) 11.4 dB
Noise margin (downstream) 13.8 dB
Manufacturer ID (local) IFTN
Manufacturer ID (remote) IKNS
Loss of frames (local) 0
Loss of frames (remote) 0
Error seconds (local) 0
Error seconds (remote) 424
FEC Errors (up) 302991
FEC Errors (down) 266957105
CRC Errors (up) 834
CRC Errors (down) 2203
HEC Errors (up) 0
HEC Errors (down) 0

hio77

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#1189523 5-Dec-2014 17:23

With a 4.7dB downstream, it seems likely that you simply have alot of crosstalk in the area.

Leave your modem to do its job, your likely to get 17a at some point, and will probably get 55~65/10 (likely on the lower side considering your 8b is heavily tanked with crosstalk)

Your CRC rates arent bad.

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Jase2985

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#1189524 5-Dec-2014 17:31

TommySharp: Who does one talk to in order to find out what their current profile is and maybe get it reviewed?

there is no one, ISP's cant change it, its done automatically by the cabinet/exchange gear. based on the quality of your line.

you will be on an 8b profile and by the looks have a pretty crappy line

JamesL

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#1203095 24-Dec-2014 11:01

Got a Spark VDSL connection installed yesterday, to complement my existing Snap VDSL one.

Interestingly the Spark connection is connected at 35mbit whereas the Snap is only at 33mbit, assume this is because the Snap line doesn't have a splitter installed so have contacted Snap to organise for one to be installed.

Currently sitting at ~20ms on Spark, hopefully it moves to DLM1 soon as I'm keen to play around with some wan load balancing on pfsense.

When I had Snap installed a couple of years back it was on DLM1 straight away and has never moved off it

hio77

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#1203098 24-Dec-2014 11:05

2mbit is pretty minimal.

Same modems? more or less joints in the line? DLM profile? Fair few reasons you could be seeing a differance in the speed.

it should drop down to DLM-1 soon.

Good luck with the balancing! i had mine all setup to do that until chorus said no!

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JamesL

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#1203298 24-Dec-2014 15:59

Snap: Zyxel P-870H-51A V2
Spark: Huawei HG360b

The lines should more or less be the same, there's two separate runs of cat6 from the ETP to the office, the only difference is the lack of splitter on the Snap line.

I suspect it's probably DLM

Andib

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#1203307 24-Dec-2014 16:15

JamesL: Got a Spark VDSL connection installed yesterday, to complement my existing Snap VDSL one.

Interestingly the Spark connection is connected at 35mbit whereas the Snap is only at 33mbit, assume this is because the Snap line doesn't have a splitter installed so have contacted Snap to organise for one to be installed.

Currently sitting at ~20ms on Spark, hopefully it moves to DLM1 soon as I'm keen to play around with some wan load balancing on pfsense.

When I had Snap installed a couple of years back it was on DLM1 straight away and has never moved off it

You'll probably find it's cross talk. Turn both modems off turn the snap one back on (leaving spark off) and you'll probably see that 2Mbit back.

I remember when @TimA had two VDSL lines running, One was 70mbit the other was 30ish mbit. When he turned his 70Mbit line off his other line got faster sync

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hio77

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#1203310 24-Dec-2014 16:25

Andib:
JamesL: Got a Spark VDSL connection installed yesterday, to complement my existing Snap VDSL one.

Interestingly the Spark connection is connected at 35mbit whereas the Snap is only at 33mbit, assume this is because the Snap line doesn't have a splitter installed so have contacted Snap to organise for one to be installed.

Currently sitting at ~20ms on Spark, hopefully it moves to DLM1 soon as I'm keen to play around with some wan load balancing on pfsense.

When I had Snap installed a couple of years back it was on DLM1 straight away and has never moved off it

You'll probably find it's cross talk. Turn both modems off turn the snap one back on (leaving spark off) and you'll probably see that 2Mbit back.

I remember when @TimA had two VDSL lines running, One was 70mbit the other was 30ish mbit. When he turned his 70Mbit line off his other line got faster sync

Given a few things about that, i dont think TimAs line is a good example at all.

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JamesL

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#1203417 24-Dec-2014 21:44

I should add that the Snap connection has always hovered around 33-34mbit before Spark was put in.

When the splitter gets installed I might get them to run a new cable to the ETP

JamesL

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#1203548 25-Dec-2014 09:58

Woke up this morning and Spark is now connected at 38 mbit

Latency is still 20ms

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