VDSL Performance & Tuning

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Lizard Networks

#1560880 27-May-2016 17:07

hotrok:

at work at the moment in Timaru. Fibre at work

Microsoft Windows [Version 6.1.7601]
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Tracing route to zeus.jetstream.co.nz [203.96.91.28]
over a maximum of 30 hops:

1 <1 ms <1 ms 1 ms 192.8***etc
2 7 ms 5 ms 5 ms 125-239-249-1.jetstream.xtra.co.nz [125.239.249.
1]
3 * * * Request timed out.
4 29 ms 30 ms 29 ms zeus.jetstream.co.nz [203.96.91.28]

Trace complete.

Interesting my ping to the same server at work was 35 to auckland with fibre. The VDSL is the same but when I was on an adsl1 profile but fibre to the cabinet (22km out of town in the sticks) my ping was 24. Does the transistion to adsl2/vdsl or fibre increase ping as it gains more latency at the cabinet? Or is Timaru got some funky exchange stuff going on?

sounds like something funky. in both cases it sounds like you werent on a lowest latency profile, the fibre latency seem slightly higher than ild expect honestly. Suspect your being terminated at a more central point there. Then again, im assuming by fibre you mean ufb.

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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

bmentink

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#1572076 15-Jun-2016 07:57

Hi There,

I have just changed my 2degrees plan and received and setup my new FritzBox 7490 modem on a VHDL2 plan.

Unfortunately I am only getting 17.7Mbits down and 0.4 up!

I am in a rural location and 1.3Kms from the Cabinet. The upload speed at 0.4Mbits is even worse that the ADSL2 1Mbit ....

I will try the settings in this thread, but am not hopeful of getting better results. My spectrum sucks ... see attached image .. where is the green upload spectrum?

What can I do? Chorus refuses to help out ....

Thanks

EDIT:

Just for completeness ... DSL readings are:

Athlonite

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#1572141 15-Jun-2016 09:45

I am in a rural location and 1.3Kms from the Cabinet.

Therein lays your problem that and 25/35db attenuation.. the only way your going to get it any better will be move closer to the Cabinet or wait for UFB

bmentink

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#1572165 15-Jun-2016 09:55

Athlonite:

I am in a rural location and 1.3Kms from the Cabinet.

Therein lays your problem that and 25/35db attenuation.. the only way your going to get it any better will be move closer to the Cabinet or wait for UFB

Yes, I know that is an issue ... but how much of that attenuation can I fix by improving my house wiring?

I do know the specs on VHDL2 is far better than what I am getting for 1.3kms from the cabinet.

(I should be getting 25Mbit down, 2.5Mbit up ...)17 Down I am happy with, it is the upload speed I want to improve ..

... and Fibre is not on Chorus's plan for our area ..... for ever ....

SaltyNZ

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#1572290 15-Jun-2016 12:14

bmentink:

... and Fibre is not on Chorus's plan for our area ..... for ever ....

Rural VDSL user fist-bump, my friend.

iPad Pro 11" + iPhone 15 Pro Max + 2degrees 4tw!

These comments are my own and do not represent the opinions of 2degrees.

bmentink

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#1572306 15-Jun-2016 12:30

SaltyNZ:

bmentink:

... and Fibre is not on Chorus's plan for our area ..... for ever ....

Rural VDSL user fist-bump, my friend.

.. and back to you friend ..

On reading another thread on VDSL ... I note that Chorus should have installed a master filter and a dedicated line to my modem. They did not do this, should I push for that?

EDit: I notice that on my system, the modem is set to only bitswap only on download, all the other folk's data on this and other threads show bitswap on both directions, is it worthwhile changing that if I can?

hio77

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#1572327 15-Jun-2016 12:47

bmentink:

SaltyNZ:

bmentink:

... and Fibre is not on Chorus's plan for our area ..... for ever ....

Rural VDSL user fist-bump, my friend.

.. and back to you friend ..

On reading another thread on VDSL ... I note that Chorus should have installed a master filter and a dedicated line to my modem. They did not do this, should I push for that?

EDit: I notice that on my system, the modem is set to only bitswap only on download, all the other folk's data on this and other threads show bitswap on both directions, is it worthwhile changing that if I can?

snapdegress nolonger do full installations by default.

The interesting thing about your line, is i cant see any upstream specturm at all. I suspect a fault in the fritz UI there.

Realistically with US0 enabled, you should be atleast around about the upstream of adsl.

As you are at the worst end of it all, ild highly recommend doing what you can to improve your line.

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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

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#1572332 15-Jun-2016 12:54

.. and the bitswap?

.. and where did you find this USO thingy ..

hio77

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#1572356 15-Jun-2016 13:05

bmentink:

.. and the bitswap?

.. and where did you find this USO thingy ..

Bitswap will turn on and off, it functions as a way to midigate errors in noise on the line by swapping out bad bits for good bits. You wont really gain or loose anything by it being on or off.

Heres an older fritz screenshot, US0 is the small slice at the very start, that ADSL uses for its upstream.

*I numbered DS1 and DS2 wrong, should have been DS0 and DS1

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

bmentink

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#1577042 20-Jun-2016 12:23

.. so after a few days running, I now have 18.5Mbits down 510Kbits up at a distance of 1.8Kms (I measured it) from the cabinet.

I don't expect to get much better on the down link, but I still expect I should have better up link rates.

Hopefully this weekend I will have a chance to get rid of any phone jack extensions/stubs ... maybe it will improve my up rate.

SaltyNZ

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#1577066 20-Jun-2016 12:35

bmentink:

.. so after a few days running, I now have 18.5Mbits down 510Kbits up at a distance of 1.8Kms (I measured it) from the cabinet.

I don't expect to get much better on the down link, but I still expect I should have better up link rates.

Hopefully this weekend I will have a chance to get rid of any phone jack extensions/stubs ... maybe it will improve my up rate.

Pays to do a little fiddling with it. In our house there is only one jack connected to the line. The house does not have a master filter; we just used a regular inline filter. Now we have naked DSL so there is no handset connected to it. I actually get better performance now with no filter than with one (which makes sense: filters aren't perfect, so they will filter out some of the low end, in particular, which is what VDSL uses for uplink).

iPad Pro 11" + iPhone 15 Pro Max + 2degrees 4tw!

These comments are my own and do not represent the opinions of 2degrees.

stevehodge

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#1577142 20-Jun-2016 14:44

SaltyNZ:

Pays to do a little fiddling with it. In our house there is only one jack connected to the line. The house does not have a master filter; we just used a regular inline filter. Now we have naked DSL so there is no handset connected to it. I actually get better performance now with no filter than with one (which makes sense: filters aren't perfect, so they will filter out some of the low end, in particular, which is what VDSL uses for uplink).

If you've only got the one jack on the line and have naked VDSL you probably should take the filter off. It's only going to make things worse. I've been filter-less for a couple of years now. I also replaced the copper from the ETP to the modem with cat6, not sure if this made any difference but again it can't hurt (unless you mess it up of course).

bmentink

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#1577331 20-Jun-2016 18:00

stevehodge:

SaltyNZ:

Pays to do a little fiddling with it. In our house there is only one jack connected to the line. The house does not have a master filter; we just used a regular inline filter. Now we have naked DSL so there is no handset connected to it. I actually get better performance now with no filter than with one (which makes sense: filters aren't perfect, so they will filter out some of the low end, in particular, which is what VDSL uses for uplink).

If you've only got the one jack on the line and have naked VDSL you probably should take the filter off. It's only going to make things worse. I've been filter-less for a couple of years now. I also replaced the copper from the ETP to the modem with cat6, not sure if this made any difference but again it can't hurt (unless you mess it up of course).

Yeah, I wondered about replacing the cable from ETP to modem, but how do you fit CAT6 cable to the phone jack style connector in the back of the modem? .. or do you mean just to the wall socket?

hio77

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#1577339 20-Jun-2016 18:09

SaltyNZ:

bmentink:

.. so after a few days running, I now have 18.5Mbits down 510Kbits up at a distance of 1.8Kms (I measured it) from the cabinet.

I don't expect to get much better on the down link, but I still expect I should have better up link rates.

Hopefully this weekend I will have a chance to get rid of any phone jack extensions/stubs ... maybe it will improve my up rate.

Pays to do a little fiddling with it. In our house there is only one jack connected to the line. The house does not have a master filter; we just used a regular inline filter. Now we have naked DSL so there is no handset connected to it. I actually get better performance now with no filter than with one (which makes sense: filters aren't perfect, so they will filter out some of the low end, in particular, which is what VDSL uses for uplink).

That is interesting findings, sound reasoning for why it works but never really considered that some of the lower would get trimmed.

Realistically US0 should provide around about what you get on adsl (slight more given the lower snr, but if im not mistaken power level is lower than on adsl so it equates out lower.)

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

stevehodge

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Ultimate Geek

#1577347 20-Jun-2016 18:42

bmentink:

Yeah, I wondered about replacing the cable from ETP to modem, but how do you fit CAT6 cable to the phone jack style connector in the back of the modem? .. or do you mean just to the wall socket?

From the ETP to a wall socket, though the Fritz has an RJ45 on the input so wall socket to modem is also cat6. In my case it's actually ETP->cat6->19" patch panel->patch cable->19" patch panel->cat6->RJ45 cat6 wall socket->cat6->modem. I'm very close to the cabinet though (100m), for a more marginal connection it might be worth trying to avoid so many connectors.

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