VDSL Performance & Tuning

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'That VDSL Cat'
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#913387 11-Oct-2013 00:48

Could be to blame for, it tends to block you out when you start paying with things you probably shouldn't lol.

Your the first one to ny knowledge that has tinkered with fretz, curious .... how's it treating you? What was the main reason you tried it ?

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HiTM4N

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#913388 11-Oct-2013 01:04

Once i worked out how to actually build the image its been good.
just running a very basic setup at the moment as a test while i work out what features i actually want.

my reason was to get more control, ultimately either use my fritz as a vpn server or allow it just work as a bridge to a real router than can perform all the functions i want

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#913934 12-Oct-2013 01:00

Ahh Dam slow upload speed issue.

Still syncing at 10 mbits....

hio77

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#914534 14-Oct-2013 08:34

so, finally have a stable connection.

uptime at the time of theres screens was only about 5 mins, so error rates should be due to settle a bit.

i will be requesting from snap to reset my DLM profile considering the fact that it hasnt had its fair chance to settle in (and get a nice 17a profile...)

seems to be something the DLM testing period does move some on now..

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hio77

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#914551 14-Oct-2013 09:02

i just realised... new firmware again....

think ill have to *fix* that..

CRCPM averaging 4 currently :/

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#914556 14-Oct-2013 09:16

hio77:
i will be requesting from snap to reset my DLM profile considering the fact that it hasnt had its fair chance to settle in (and get a nice 17a profile...)

seems to be something the DLM testing period does move some on now..

I haven't seen any indication that the initial DLM testing period has any impact on the move to 17a. You're already on DLM-1 so I'm not sure a reset will achieve anything for you.

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HiTM4N

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#914559 14-Oct-2013 09:21

seatil: Good news everyone! Got SNR tweaking working with firmware 84.05.51 on the 7390.

Screenshot is only for proof that it works. The line normally syncs around 44.5Mbps with standard SNRM target. Obviously error rate is a touch high at this level of SNRM tweak.

Caveat and disclaimer: Following these instructions is done ENTIRELY at your own risk. Be aware that this firmware version has an issue where the line will appear "dead" if the incoming line is connected to the Fritz box when an SNR or INP configuration change is made, even if that's made via the web interface. Do NOT omit step 2.

If you do manage to "kill" the line, try resetting SNRM target back to 0 (steps 2, 4, 5, 6), then disconnect the Fritz from the phone line and power it down for about 50 minutes. Then reconnect it and power it back up, and wait a few minutes while it boots and resyncs. This process worked for me, I can't guarantee it'll work for you.

Steps:

1) Backups. Backups. Backups.
2) Disconnect the incoming phone line from the Fritz box. This is a precautionary step to prevent the line going "dead" when the Fritz initiates a resync after the config change. (See post 2 on page 132.)
3) Enable telnet on the Fritz by picking up a phone directly attached to it and dialing "#96*7*"
4) Telnet to the Fritz box and log in.
5) Execute the command 'ctlmgr_ctl w sar settings/DownstreamMarginOffset -30' to reduce downstream target SNRM by 3dB (i.e. 9dB target) or -60 for -6dB reduction (6dB target).
6) Plug the incoming phone line back in.
7) Enjoy your faster, possibly less stable, DSL line.

Went to tweak SNR last night and jumped the gun missing step 2 :( :(
Have logged a call with snap as leaving the box unplugged for an hour didn't resolve the issue

Love of all phones, computers and gadgets

hio77

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#914579 14-Oct-2013 09:43

stevehodge:
hio77:
i will be requesting from snap to reset my DLM profile considering the fact that it hasnt had its fair chance to settle in (and get a nice 17a profile...)

seems to be something the DLM testing period does move some on now..

I haven't seen any indication that the initial DLM testing period has any impact on the move to 17a. You're already on DLM-1 so I'm not sure a reset will achieve anything for you.

seen a few people recently in the telecom section popping 17a's in their testing period..

at the end of the day, its worth a shot right? if not just to see what DLM feels like doing..

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hio77

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#914584 14-Oct-2013 09:45

HiTM4N:
seatil: Good news everyone! Got SNR tweaking working with firmware 84.05.51 on the 7390.

Screenshot is only for proof that it works. The line normally syncs around 44.5Mbps with standard SNRM target. Obviously error rate is a touch high at this level of SNRM tweak.

Caveat and disclaimer: Following these instructions is done ENTIRELY at your own risk. Be aware that this firmware version has an issue where the line will appear "dead" if the incoming line is connected to the Fritz box when an SNR or INP configuration change is made, even if that's made via the web interface. Do NOT omit step 2.

If you do manage to "kill" the line, try resetting SNRM target back to 0 (steps 2, 4, 5, 6), then disconnect the Fritz from the phone line and power it down for about 50 minutes. Then reconnect it and power it back up, and wait a few minutes while it boots and resyncs. This process worked for me, I can't guarantee it'll work for you.

Steps:

1) Backups. Backups. Backups.
2) Disconnect the incoming phone line from the Fritz box. This is a precautionary step to prevent the line going "dead" when the Fritz initiates a resync after the config change. (See post 2 on page 132.)
3) Enable telnet on the Fritz by picking up a phone directly attached to it and dialing "#96*7*"
4) Telnet to the Fritz box and log in.
5) Execute the command 'ctlmgr_ctl w sar settings/DownstreamMarginOffset -30' to reduce downstream target SNRM by 3dB (i.e. 9dB target) or -60 for -6dB reduction (6dB target).
6) Plug the incoming phone line back in.
7) Enjoy your faster, possibly less stable, DSL line.

Went to tweak SNR last night and jumped the gun missing step 2 :( :(
Have logged a call with snap as leaving the box unplugged for an hour didn't resolve the issue

when i did that, i had 4 days downtime, due to techs not understanding they need to reboot the line card (despite requests for it)

chorus will try to remotely fix you issue first, your linecard will have shut its trap and thus they cant remotely fix it.

hopefully it goes a little more smoothly for you..

#include <std_disclaimer>

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

HiTM4N

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#914589 14-Oct-2013 09:49

hio77:
HiTM4N:
seatil: Good news everyone! Got SNR tweaking working with firmware 84.05.51 on the 7390.

Screenshot is only for proof that it works. The line normally syncs around 44.5Mbps with standard SNRM target. Obviously error rate is a touch high at this level of SNRM tweak.

Caveat and disclaimer: Following these instructions is done ENTIRELY at your own risk. Be aware that this firmware version has an issue where the line will appear "dead" if the incoming line is connected to the Fritz box when an SNR or INP configuration change is made, even if that's made via the web interface. Do NOT omit step 2.

If you do manage to "kill" the line, try resetting SNRM target back to 0 (steps 2, 4, 5, 6), then disconnect the Fritz from the phone line and power it down for about 50 minutes. Then reconnect it and power it back up, and wait a few minutes while it boots and resyncs. This process worked for me, I can't guarantee it'll work for you.

Steps:

1) Backups. Backups. Backups.
2) Disconnect the incoming phone line from the Fritz box. This is a precautionary step to prevent the line going "dead" when the Fritz initiates a resync after the config change. (See post 2 on page 132.)
3) Enable telnet on the Fritz by picking up a phone directly attached to it and dialing "#96*7*"
4) Telnet to the Fritz box and log in.
5) Execute the command 'ctlmgr_ctl w sar settings/DownstreamMarginOffset -30' to reduce downstream target SNRM by 3dB (i.e. 9dB target) or -60 for -6dB reduction (6dB target).
6) Plug the incoming phone line back in.
7) Enjoy your faster, possibly less stable, DSL line.

Went to tweak SNR last night and jumped the gun missing step 2 :( :(
Have logged a call with snap as leaving the box unplugged for an hour didn't resolve the issue

when i did that, i had 4 days downtime, due to techs not understanding they need to reboot the line card (despite requests for it)

chorus will try to remotely fix you issue first, your linecard will have shut its trap and thus they cant remotely fix it.

hopefully it goes a little more smoothly for you..

Might have to get my mate that works for transfield involved if that's going to be the case, see if he can get a request put through

Love of all phones, computers and gadgets

hio77

'That VDSL Cat'
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#914591 14-Oct-2013 09:57

HiTM4N:

Might have to get my mate that works for transfield involved if that's going to be the case, see if he can get a request put through

hopefully the fact that your not dealing with visionstreams incompetence might help there..

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hio77

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#914612 14-Oct-2013 10:28

this really isnt looking pretty..

2 hours uptime and its settling higher..

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hio77

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#914651 14-Oct-2013 10:58

stevehodge:

I haven't seen any indication that the initial DLM testing period has any impact on the move to 17a. You're already on DLM-1 so I'm not sure a reset will achieve anything for you.

if i recall you didnt have the best error rates before you went 17a, what were your CRCs averaging?

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6297a1679f9

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#914712 14-Oct-2013 11:56

Look at those stats fall...
I had a very unstable line yesterday so I removed the SNR Tweak, Fritz was crashing (kept rebooting) cause it was unable the handle the FEC errors or something like that. (wasnt that high anyways, like 50 FECPM/ 700-1000 FEC per 15 mins)

Oh well, saw that coming with the 10 resyncs in a hour. Ahh Back to DLM 6 and about the same sync speeds as the .51 firmware.

hio77

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#914720 14-Oct-2013 12:02

harsh :/

lost your 0 attenuation too!

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