VDSL Performance & Tuning

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#841616 22-Jun-2013 17:53

Nice! They're all pretty close really aren't they. I'd be interested to see the comparative error rates over 24hrs on DLM-1 with those! Pity you didn't have a Fritz as well.

mattgreen

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#841950 23-Jun-2013 14:19

stevehodge:
sidefx: It must be the day for DLM changes because I finally got bumped back to DLM4 this morning.

I got a DLM change too. Back to DLM-1. Strangely, my sync is lower than it was on DLM-2: 66688 now vs 69144 before. Thought I'd try untweaked again, so Sam, if you're still tracking this, here's a new entry:

Attenuation, Distance, Sync, Profile, DLM, CRCPM, SNRM, SNRMT
SamF: 9db, 300m, 49.5mbit, 8b, 1, 0.09, 11, 0
HowickDota: 6db, 150m, 62.8mbit, 17a, 1, 0.3, 12?, 0?
JamesL: 12-13db, 400m, 34.2mbit, 8b, 1, ?, 12?, 0?
SteveH: 4db, 130m, 47968, 8b, 1, 3, 11, 0
SteveH: 5db, 130m, 44720, 8b, 1, 0.87, 11, 0
SteveH: 5db, 130m, 44720, 8b, 1, 0.52, 11, 0
SteveH: 5db, 130m, 43872, 8b, 1, 0.82, 12, +1
SteveH: 5db, 130m, 42296, 8b, 1, 0.14, 13, +2
SteveH: 5db, 130m, 49576, 8b, 1, 6, 5, 0 (weird sync with very low SNRM)
SteveH: 5db, 130m, 50608, 8b, 1, 19, 11, 0 (another weird sync though SNRM is normal)
SteveH: 6db, 130m, 58616, 17a, 1, 0.08, 14, 2
SteveH: 6db, 130m, 69144, 17a, 2, 0.03, 10, -2
HowickDota: 11db, 400m, 38.4mbit, 8b, 6, 0, 12, 0
fellaintga: 8dB, 200m, 55856, 17a, 1?, 0.02, 12, 0
SteveH: 6db, 130m, 63200, 17a, 1, 0, 12, 0

The connection has only been up about 45 minutes and I haven't had any errors yet. No doubt I'll get some eventually.

Might as well add my stats to the list.

I've been a solid 45/10 on DLM1 since day 1 on VDSL. Removed the second jack and gained about 200kbps. Also gained 0.2 CRCPM which was odd. I suspect that's just the increased sync speed rather than any change in the line.

Haven't tweaked SNRMT as I don't want to risk losing DLM1.

Attenuation, Distance, Sync, Profile, DLM, CRCPM, SNRM, SNRMT
mattgreen: 10db, 450m, 44992, 8b, 1, 1, 11, 0

SamF

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#841962 23-Jun-2013 15:14

Sweet, thanks mattgreen.

Steve, what's your error rate now?

stevehodge

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#841963 23-Jun-2013 15:17

SamF: Sweet, thanks mattgreen.

Steve, what's your error rate now?

It's still showing 0 per minute though I've had a total of 15 in the last 24 hours so it should be 0.01.

SamF

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#841964 23-Jun-2013 15:18

Nice! Ok, I'll update your entry.

JonoNZ

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#842423 24-Jun-2013 15:12

My modem did a resync on Sunday morning at 4:11am.

Telecom

Previously:
44,665 kbit/s down
10,347 kbit/s up
11.0 dB attenuation down

Now:
47,805 kbit/s down
10,341 kbit/s up

AliExpress

Shop now on AliExpress (affiliate link).

SamF

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#843523 24-Jun-2013 18:19

@JonoNZ: Has your DLM Profile changed?

JonoNZ

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#843540 24-Jun-2013 19:10

SamF: @JonoNZ: Has your DLM Profile changed?

I'm not too sure how I can tell on my Technicolor modem.

JeremyNzl

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#843549 24-Jun-2013 19:32

Jono, how far are u from the cabinet/exchange

JonoNZ

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#843595 24-Jun-2013 20:02

JeremyNzl: Jono, how far are u from the cabinet/exchange

Approx 450-500m to my cabinet.

SamF

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#843628 24-Jun-2013 21:01

JonoNZ:
SamF: @JonoNZ: Has your DLM Profile changed?

I'm not too sure how I can tell on my Technicolor modem.

Give us the stars you can find and well see if we can help you work it out.

New World

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JonoNZ

274 posts

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#843633 24-Jun-2013 21:17

SamF:
JonoNZ:
SamF: @JonoNZ: Has your DLM Profile changed?

I'm not too sure how I can tell on my Technicolor modem.

Give us the stars you can find and well see if we can help you work it out.

Stats? My previous sync is shown on page 104 of this thread. I've been told the modem doesn't show the stats required to determine my DLM.

sidefx

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#843647 24-Jun-2013 21:33

@JonoNZ: What other menu items show up in the web interface? Can you telnet onto it?

"I was born not knowing and have had only a little time to change that here and there." | Octopus Energy | Sharesies
- Richard Feynman

JonoNZ

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#843653 24-Jun-2013 21:44

sidefx: @JonoNZ: What other menu items show up in the web interface? Can you telnet onto it?

That is all there is available with respect to xDSL. Just tried to telnet, the following options are available:

Following command groups are available :

contentsharing firewall printersharing pwr service
config connection cwmp debug dhcp
dns download dsd dyndns env
eth atm expr grp hostmgr
ids igmp interface ip ipqos
label language memm mld mlp
mobile nat ppp pptp ptrace
script sntp software statecheck syslog
system tls tunnel upgrade upnp
user wansensing webserver wireless xdsl

...I tried xdsl, no extended info in there that I could see.

SamF

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#843659 24-Jun-2013 21:50

Try: connection, statecheck, system

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