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Author Topic: IP profile and sync speed.  (Read 16294 times)

NewtronStar

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IP profile and sync speed.
« on: March 18, 2016, 08:49:46 PM »

[Admin Note - Split from topic originally started in the G.INP on ECI topic]

Huawie Cab & HG612

Sync rate @ 35580 Kbps
IP profile 32.7

Now I have seen how to get the ratio but what ever happens when using the PC calculator it go's  belly up so could one of use kind members do the maths for me  :)
« Last Edit: March 25, 2016, 01:59:24 AM by kitz »
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burakkucat

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Re: IP profile and sync speed.
« Reply #1 on: March 18, 2016, 08:56:35 PM »

Sync rate @ 35580 Kbps
IP profile 32.7

Hmm . . . Odd.  :hmm:

(32700 / 35580) x 100 = 91.91%

  ???
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NewtronStar

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Re: IP profile and sync speed.
« Reply #2 on: March 18, 2016, 09:07:35 PM »

Sync rate @ 35580 Kbps
IP profile 32.7

Hmm . . . Odd.  :hmm:

(32700 / 35580) x 100 = 91.91%

  ???

Indeed BC something is not quite right with my line and noticed this a few years ago the sync rate and IP profile don't match.
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kitz

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Re: IP profile and sync speed.
« Reply #3 on: March 18, 2016, 11:00:33 PM »

Quote from: NewtronStar link=topic=17195.msg316615#msg316615

Indeed BC something is not quite right with my line and noticed this a few years ago the sync rate and IP profile don't match.

At first I thought hmmm strange.   Have you ever had one that matched up.

Then considering what I just typed above re the 60 seconds, I wonder if there is a possibility that RAP hasn't detected a retrain and change of sync speed... therefore it's possibly calculating on an old sync speed.

____

That delay is definitely there.   I've seen cases on my own line where BRAS hasn't recorded quick resyncs in respect of info recorded for bRAS control.   BRAS control is  also how openreach engineers see on their system for loss of sync.

iirc AndyH also quoted a BT doc where it mentioned 40/60 seconds of downtime to ensure RAMBO detected the retrain properly.   The only problem is that RAMBO consists of RAP and DLM and he was using the 40/60 secs as proof that DLM needs 1 min to detect a retrain.... when in actual fact it relates to the BRAS functions.
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NewtronStar

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Re: IP profile and sync speed.
« Reply #4 on: March 23, 2016, 09:32:25 PM »

the formula doesnt work.
I think it does work with the TD-W9980, but only since TP-LINK changed the firmware to make it fully support g.inp.   

No it does not even work for me using a HG612 and a Huawei cabinet so that formula should be put in the bin  ;)
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kitz

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Re: IP profile and sync speed.
« Reply #5 on: March 23, 2016, 09:57:39 PM »

No it does not even work for me using a HG612 and a Huawei cabinet so that formula should be put in the bin  ;)

The weird thing is that yours didnt even work with the 96.79% figure.   The 96.79% should work for everyone on NGA (except those who are g.inped).

Did you try a resync leaving it disconnected for at least a min so that the bRAS RAP porfiler has chance to pick up your new sync speed.   I mentioned in this post that Openreach recommends a min of 40-60 seconds to ensure the RAP function notices the change in sync.    RAP is separate from the DLM.   DLM info is monitored by the DSLAM.   RAP has to go over to the RAS and it doesn't always pick up quick resyncs.
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NewtronStar

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Re: IP profile and sync speed.
« Reply #6 on: March 24, 2016, 05:53:29 PM »

Was wonder about my IP profile Vs Sync rate which is 35580 Kbps and the IP is 32700 which gives me 91.90% this seems abnormal from what I am seeing on this thread.

If the forum moderators want to move my post that is fine just want to get to the bottom of how or why this has happened.

 
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kitz

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Re: IP profile and sync speed.
« Reply #7 on: March 25, 2016, 03:09:14 AM »

Hi NS.   Ive split this off because it needs looking into further as yours is the first line that Ive seen that doesnt obey the 96.79 / 96.69 rule.*

It does indeed work out at 91.9 % which is quite a deviation from 96%

The way it is supposed to work is sync speed minus an allowance for overheads.  Even the adsl2+ lines use a fixed 88.2% method which is more widely documented.
iirc it was BaldEagle that first noted the difference for g.inp lines so he gets credit for the 96.79 / 96.69 observation.

I cant help but notice that yours is about half way between the 2.

Im trying to think of reasons why this could possibly be.   The obvious would either be something to do with your framing overheads...
OR  is your line banded (which I know it isnt) , has it ever been banded?

Can you remember is your IPprofile always 32.7 regardless of your sync speed?

-----------

Working backwards with some figures so I know what Im dealing with 

A sync of 35580 should give you an IPprofile of:-

     34.4

An IPprofile of 32.7 should give you a sync of:-

     33784 (non g.inp)
     33819 (g.inp)


Actually I just looked back on MDWS and I can see you arent banded... but Oct 8th you had a sync that would fit your existing profile, alternatively around May time last year.



---
*barring the odd 0.01 due to rounding of framing parameters.
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burakkucat

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Re: IP profile and sync speed.
« Reply #8 on: March 25, 2016, 02:58:59 PM »

There is one other peculiarity about N*Star's circuit that is noticeable when looking on MDWS. There never seems to be a continuous 24 hours period of data uploading to the MDWS server . . . I do not recall ever seeing the percentage higher than 98%

  ???
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NewtronStar

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Re: IP profile and sync speed.
« Reply #9 on: March 25, 2016, 05:44:29 PM »

Can you remember is your IPprofile always 32.7 regardless of your sync speed?

-----------

Working backwards with some figures so I know what Im dealing with 

A sync of 35580 should give you an IPprofile of:-

     34.4

An IPprofile of 32.7 should give you a sync of:-

     33784 (non g.inp)
     33819 (g.inp)


Actually I just looked back on MDWS and I can see you arent banded... but Oct 8th you had a sync that would fit your existing profile, alternatively around May time last year.



---
*barring the odd 0.01 due to rounding of framing parameters.

Yes the IPprofile does change it will lower when say I do a re-sync and the sync rate is 34000 kbps to 32000 Kbps or so depending on time of day when I do modem re-sync

Well on May the 13th 2015 was when I changed ISP provider BT to EE, I do remember some years ago on the these forums BaldEagle was helping work out the IPprofile percentages and did show up as 96.79 well before the G.INP days.

There is one other peculiarity about N*Star's circuit that is noticeable when looking on MDWS. There never seems to be a continuous 24 hours period of data uploading to the MDWS server . . . I do not recall ever seeing the percentage higher than 98%

  ???

I don't know why this is happening it only started 3 weeks done most things reset router and rebuilt the RPi changed ethernet cables and so on but no luck.
« Last Edit: March 25, 2016, 06:00:06 PM by NewtronStar »
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WWWombat

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Re: IP profile and sync speed.
« Reply #10 on: March 26, 2016, 02:09:14 PM »

@ns
Can you post a full set of the "--stats" output?

After discovering what more of the framing parameters are, I'm wondering if anything will stand out to me.
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NewtronStar

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Re: IP profile and sync speed.
« Reply #11 on: March 26, 2016, 05:07:24 PM »

Thanks WWWombat I would appreciate any help you can give me.

Code: [Select]
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 6255 Kbps, Downstream rate = 34092 Kbps
Bearer: 0, Upstream rate = 6296 Kbps, Downstream rate = 35580 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 5.6 5.9
Attn(dB): 24.6 0.0
Pwr(dBm): 11.2 0.1
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 227 191
M: 1 1
T: 0 40
R: 10 12
S: 0.2038 0.9680
L: 9342 1686
D: 4 1
I: 238 102
N: 238 204
Q: 4 0
V: 0 0
RxQueue: 84 0
TxQueue: 21 0
G.INP Framing: 18 0
G.INP lookback: 21 0
RRC bits: 0 24
Bearer 1
MSGc: 90 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 10.6667 0.0000
L: 24 0
D: 1 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 694442
OHFErr: 97 408
RS: 2661593688 327729
RSCorr: 4286622 513
RSUnCorr: 0 0
Bearer 1
OHF: 49508544 0
OHFErr: 3 0
RS: 297050895 0
RSCorr: 5934 0
RSUnCorr: 3 0

Retransmit Counters
rtx_tx: 54818236 0
rtx_c: 135603 0
rtx_uc: 221 0

G.INP Counters
LEFTRS: 70 0
minEFTR: 35574 0
errFreeBits: 431040383 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 2870615739 0
Data Cells: 130152516 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 69 335
SES: 0 0
UAS: 18 18
AS: 795252

Bearer 0
INP: 50.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 9.71
OR: 0.01 26.34
AgR: 35658.62 6322.59

Bearer 1
INP: 2.50 0.00
INPRein: 2.50 0.00
delay: 0 0
PER: 16.06 0.01
OR: 47.81 0.01
AgR: 47.81 0.01

Bitswap: 538079/538219 2604/2607

Total time = 1 days 4 hours 54 min 30 sec
FEC: 4286622 513
CRC: 97 408
ES: 69 335
SES: 0 0
UAS: 18 18
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 9 min 30 sec
FEC: 12450 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 2989 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 4 hours 54 min 30 sec
FEC: 45116 32
CRC: 1 19
ES: 1 16
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 528306 48
CRC: 10 53
ES: 5 40
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 9 days 4 hours 54 min 11 sec
FEC: 4286622 513
CRC: 97 408
ES: 69 335
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#

Code: [Select]
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 6188 Kbps, Downstream rate = 33860 Kbps
Bearer: 0, Upstream rate = 6296 Kbps, Downstream rate = 35580 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205)
DS: (33,859) (1216,1961)
  VDSL Port Details   Upstream   Downstream
Attainable Net Data Rate:      6188 kbps     33860 kbps
Actual Aggregate Tx Power:        0.1 dBm      11.2 dBm
====================================================================================
  VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
  Line Attenuation(dB): 7.8 42.6 N/A N/A N/A 19.4 52.3 80.4
Signal Attenuation(dB): 7.8 42.0 N/A N/A N/A 21.7 51.9 N/A
        SNR Margin(dB): 5.8 5.8 N/A N/A N/A 5.4 5.6 N/A
         TX Power(dBm): -11.1 -0.2 N/A N/A N/A 8.6 7.8 N/A
#

[Moderator edited in an attempt to fix a mishap with the [code][/code] tags.]
« Last Edit: March 26, 2016, 05:51:53 PM by burakkucat »
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NewtronStar

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Re: IP profile and sync speed.
« Reply #12 on: March 27, 2016, 09:08:36 PM »

I did a modem re-sync as the DS SNRm was at it's lowest point the sync rate is showing 34015 Kbps and the IP profile shows as 31.23

31230/34014 * 100 = 91.81% it seems stuck at 91% :shrug2:
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NewtronStar

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Re: IP profile and sync speed.
« Reply #13 on: March 31, 2016, 12:28:30 AM »

It was something I had to do and that was to remove the HG612 and use the BrightBox2 as modem and router the sync rate is now 37599 Kbps and the IP profile shows as 34.6 which = 92%

As you can see with the BB2 line stats it's hard to know if G.INP is enabled or not  :(

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kitz

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Re: IP profile and sync speed.
« Reply #14 on: April 02, 2016, 09:20:07 PM »

Hi NS

I had a look at your stats, theres a couple of things I note - your R/N figure is 4.2% so you are carrying a slightly higher FEC overhead, but nothing of much concern.

The other thing I note is this figure for Bearer 1

D:      1      0


Most of the other lines Ive seen have interleaved depth of say 3 for the downstream DTU.   The modems which report 'no interleave' on the DTU are the the ECI modems, for which the usual calculation also doesnt apply.


I therefore suspect its something in your overhead framing which upsets the usual rules.  wombat knows far more than me when it comes to trying to find a relationship between those figures, both of us are interested in finding out what that relationship is, but so far havent been able to. :(


Quote
As you can see with the BB2 line stats it's hard to know if G.INP is enabled or not

The BB2 is g.inp compatible, so you should assume it is on.
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