VDSL Performance & Tuning

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'That VDSL Cat'
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#1153630 14-Oct-2014 14:15

DumKopf:
hio77:
DumKopf: Pretty much on par with my experience of getting it connected.

My attenuation went from 9dB to 13dB.

And I started on the fast profile and got shifted to 8ms (down)/2ms (up) profile after a day or so.

8/2 .. thats a rather odd profile..

I could be possibly confused with something else, but this is what I've got:

What firmware version?

offtopic: geekzone please get rid of the stupid max-width on images! its a PITA.

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DumKopf

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#1153632 14-Oct-2014 14:16

Lol, just changed the image to a link because of that.

F/W 06.06

hio77

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#1153634 14-Oct-2014 14:19

DumKopf: Lol, just changed the image to a link because of that.

F/W 06.06

very interesting... not a common sight with that firmware..

do me a tracert to anywhere? i wanna see if its a miss reading or actually real..

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charsleysa

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#1153640 14-Oct-2014 14:28

8/2 is normal, I would get that every time my port was reset then my line stuffed up. I still have it sadly (though the issue might finally be fixed).

1. 192.168.2.1; fritz.box; 1.40, 1.82, 1.87

2. 111.69.37.105; 105.37.69.111.static.snap.net.nz; 19.3, 18.7, 31.2

3. 111.69.37.106; 106.37.69.111.static.snap.net.nz; 19.2, 18.4, 32.1

4. 111.69.33.137; 137.33.69.111.static.snap.net.nz; 28.6, 43.9, 30.2

5. 111.69.33.138; 138.33.69.111.static.snap.net.nz; 33.8, 41.2, 38.9

6. 203.57.145.139; 28.5, 28.1, 41.4

7. 202.162.73.2; www.trademe.co.nz; 28.1, 40.2, 28.0

Regards
Stefan Andres Charsley

DumKopf

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#1153642 14-Oct-2014 14:28

I've reconnected/restarted a few times, sometimes I get "fast" upload then it comes back to 2ms. Downstream is always 8ms.

Not home at the moment (remotely logged into Router for info).

Here is a trace from work to home if this helps:
1 192.168.1.252 (192.168.1.252) 0.929 ms 0.613 ms 0.473 ms
2 1.1.1.1 (1.1.1.1) 3.678 ms 4.060 ms 3.829 ms
3 snap1.ape.nzix.net (192.203.154.120) 5.792 ms 5.547 ms 6.733 ms
4 46.32.69.111.static.snap.net.nz (111.69.32.46) 9.401 ms 9.675 ms 8.639 ms
5 47.32.69.111.static.snap.net.nz (111.69.32.47) 10.606 ms 9.917 ms 9.596 ms
6 my.home.host.name (1.2.3.4) 23.068 ms 23.055 ms 22.955 ms

hio77

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#1153643 14-Oct-2014 14:30

interesting. that is indeed looking like 8+2ms.

@charsleysa, normal in respect to dlm profiles as we know them.

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Stasis007

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#1153654 14-Oct-2014 14:36

hio77:
absolutely normal, moving from adsl1 to adsl2 you would have seen a slight jump too.

fast infers 1ms, aka DLM-1.

borderline connection there, but sounds like its not too bad. whats your stats and your error rates looking like?

Only been connected for a couple of hours, but errors rates were consistently low on ADSL too.

(The Syncs were from Chorus activating VDSL at the exchange and then after the line install)

A little disappointed in the speed, although being on the border of acceptable coverage I wasn't expecting much. The Chorus guy that did the ADSL install when I changed address reckoned I'd get in the high 20s on VDSL. Still it's an improvement over the 15k I got on ADSL.

hio77

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#1153659 14-Oct-2014 14:41

Ild just leave the connection be.

See how it goes. You are clearly borderline there.. Looks like you will keep DLM-1 long as you dont reboot much.

you do have leway to snr tweak down a little, which would get you to 20s, but ild just hold off for your first month and see where things settle first.

might find if you really want to squeeze that little bit more out of your line, you could switch to a modem with a different chipset to see how well it goes... but that can be an expensive gamble for vdsl.

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charsleysa

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#1153662 14-Oct-2014 14:47

Was the install standard? CAT cabling to the internet socket? VDSL master filter on the incoming line?

If yes to all of those then your line is as good as you're probably gonna get.

You need a downstream attenuation of less than 20 to get a good downstream speed in the 20s.

Regards
Stefan Andres Charsley

DumKopf

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#1153663 14-Oct-2014 14:47

Looks like you've got a solid connection, but you're probably about 1km from the exchange?

Be prepared to start obsessing over your DSL stats page.

Stasis007

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#1153664 14-Oct-2014 14:49

Thanks for the reassurance, good to know the connection is legit :) It's cable direct from splitter to modem.

Yeah is 900m from exchange apparently. Had higher expectations due to the previous Chorus guy, but even this extra 4Mbps was worth the effort.

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hio77

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#1153674 14-Oct-2014 15:03

Stasis007: Thanks for the reassurance, good to know the connection is legit :) It's cable direct from splitter to modem.

Yeah is 900m from exchange apparently. Had higher expectations due to the previous Chorus guy, but even this extra 4Mbps was worth the effort.

the upstream makes all the difference :)

could always do what a few others around here do, get a second line and balance the two!

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DumKopf

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#1153676 14-Oct-2014 15:07

hio77: get a second line and balance the two!

Wait... can you elaborate?

hio77

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#1153679 14-Oct-2014 15:14

DumKopf:
hio77: get a second line and balance the two!

Wait... can you elaborate?

Although its not uncommon to see windows's built in routing being used as a load balancer.

an end to end bonded connection would be far better but also expensive.

the other common way of doing this is two connections into a firewall box, say pfsense, and then balancing on there.

Not exactly a cheap option, but it does double your available bandwidth over multiple threads (a single thread would only be as fast as that of one connection max.)

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DumKopf

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#1153680 14-Oct-2014 15:15

Ah yep. Thanks for that.

/waits for fibre.

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