VDSL Performance & Tuning

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#1434105 24-Nov-2015 20:30

stevehodge:I hope 998 rolls out here soon because we're not scheduled for fibre until after July 2017. In the middle of Auckland. >:(

I feel your pain brother, it's the same for me! EVERYTHING around us has fibre already, including the damn PARK down the road apparently.

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#1434143 24-Nov-2015 21:29

DumKopf:
SamF: Based on many years of work with xDSL 'modems', I have a theory that the comms circuitry in any device gradually degrades over time. It seems to happen to all of them, regardless of initial quality.

Remember the Dynalink RTA1320? Those things were the rage. Then they'd start screaming after a while eventually crapping out. I have a box of dud ones.

i killed my last one a few weeks ago... have to get another one at some point!

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stevehodge

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#1434154 24-Nov-2015 21:46

SamF:
stevehodge:
SamF: Based on many years of work with xDSL 'modems', I have a theory that the comms circuitry in any device gradually degrades over time. It seems to happen to all of them, regardless of initial quality.

I'll test that theory. I've got a FritzBox 7490 that 2Degrees sent me for free (well for signing for 12 months when I switched over to the unlimited plan), I just haven't got around to setting it up yet.

Same model as your current one & same firmware level?

Sounds like an interesting experiment if so!

No I'm still running a 7340 so it's not going to be a very scientific test.

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#1434158 24-Nov-2015 21:53

Yeah thats a change of chipset if im not mistaken then :L

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#1434159 24-Nov-2015 21:55

hio77: Yeah thats a change of chipset if im not mistaken then :L

Bummer.

Athlonite

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#1435082 26-Nov-2015 11:52

hio77:
DumKopf:
SamF: Based on many years of work with xDSL 'modems', I have a theory that the comms circuitry in any device gradually degrades over time. It seems to happen to all of them, regardless of initial quality.

Remember the Dynalink RTA1320? Those things were the rage. Then they'd start screaming after a while eventually crapping out. I have a box of dud ones.

i killed my last one a few weeks ago... have to get another one at some point!

to stop them from dying a horrid death find a smallish heat sink cut a whole in the top of the RTA1320 and just use super glue to attach the heat sink to the chip worked for me, the RTA1320's problem is as soon as it starts doing any real work it overheats something vicious and for a reasonable replacement try a Huawei 882 normally from vodafone a few years ago

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hio77

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#1435423 26-Nov-2015 18:15

Athlonite:
hio77:
DumKopf:
SamF: Based on many years of work with xDSL 'modems', I have a theory that the comms circuitry in any device gradually degrades over time. It seems to happen to all of them, regardless of initial quality.

Remember the Dynalink RTA1320? Those things were the rage. Then they'd start screaming after a while eventually crapping out. I have a box of dud ones.

i killed my last one a few weeks ago... have to get another one at some point!

to stop them from dying a horrid death find a smallish heat sink cut a whole in the top of the RTA1320 and just use super glue to attach the heat sink to the chip worked for me, the RTA1320's problem is as soon as it starts doing any real work it overheats something vicious and for a reasonable replacement try a Huawei 882 normally from vodafone a few years ago

are they a broadcom chipset? supports bridging? might be worth a try, i run PPPoE vlan 10 over them.. so they purely act as a dumb bridge. Given a spot of tuning here and there can be heavy on it..

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#1435840 27-Nov-2015 10:04

Yesterday's sync: 42mbit :)

I'm in Takanini.

Now if I could get my router to stop rebooting itself 3 times a day I might have a pretty good line!

hio77

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#1435850 27-Nov-2015 10:26

not a bad gain, even over that 10mbit mark!

i recall you talked about tweaking earlier in the thread on 998... to be honest, your already hitting pretty heavy bin counts you might not get very far in terms of diminishing returns.

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SamF

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#1435886 27-Nov-2015 10:49

Yeah, you may be right. Errors aren't bad (0.15 CRCPM), but I do have 8ms interleaving...

We'll see how it goes when I get to DLM-1, if I ever do damn router!

I might do some tweaking just to see what's possible :)

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#1435934 27-Nov-2015 11:26

Here is mine that got upgraded overnight

Speed went from 41/10 to 70/29 as i am on 17a. The funny thing is the downstream changed at about 330am and the upstream changed at about 445.

As you can see from the after stats they are all over the place, with 15dB down SNR and my attenuation has gone up by about 1.5dB

Also as spark hasnt upgraded their BGN's im still hamstrung with the actual speed i can achieve from sites etc. Apparently this is being addressed but its not a priority

Click images to enlarge
Before:

After:

some of those stats seems a little out of wack

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SamF

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#1435940 27-Nov-2015 11:36

15dB DS SNR? Weird! You've got no SNRM tweaks going I presume?

Jase2985

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#1435948 27-Nov-2015 11:48

nope cant on the NF8AC im wondering if it just when everyone reconnected it got all screwy

will see what happens in the next couple of days if/when DLM does it thing

Athlonite

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#1435994 27-Nov-2015 13:01

hio77:
Athlonite:
hio77:
DumKopf:
SamF: Based on many years of work with xDSL 'modems', I have a theory that the comms circuitry in any device gradually degrades over time. It seems to happen to all of them, regardless of initial quality.

Remember the Dynalink RTA1320? Those things were the rage. Then they'd start screaming after a while eventually crapping out. I have a box of dud ones.

i killed my last one a few weeks ago... have to get another one at some point!

to stop them from dying a horrid death find a smallish heat sink cut a whole in the top of the RTA1320 and just use super glue to attach the heat sink to the chip worked for me, the RTA1320's problem is as soon as it starts doing any real work it overheats something vicious and for a reasonable replacement try a Huawei 882 normally from vodafone a few years ago

are they a broadcom chipset? supports bridging? might be worth a try, i run PPPoE vlan 10 over them.. so they purely act as a dumb bridge. Given a spot of tuning here and there can be heavy on it..

If I still had one lying round gathering dust I'd rip it apart to find out for you sorry but I haven't had one since going with Orcons Genius (black) now white NF4V I gave it away

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#1436118 27-Nov-2015 15:32

Got a nice boost here this week as well.

Standard Fritzbox 7390 on 2degrees. Anyone know what changes they have made? Seem to have happened several places from what I can read out of this thread.

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