IP Profile is now 74.1 instead of 77.35

Hi,

I noticed recently that I lost some speed and that my IP Profile has been lowered, however my Sync Rates are exact the same

https://i.imgur.com/mrY4nCi.png

Speed Tests are 70Mbps instead of 74MBps -

Stuff happens. Such is the nature of xDSL. Wake us up if it drops below 50Mb/s.

In reply to a post by Andrue:

Stuff happens. Such is the nature of xDSL. Wake us up if it drops below 50Mb/s.

That 400kb/s could come in handy for me lol

You have gone from retransmission low (IP profile of exactly 96.7%) to retransmission high (IP profile between 91-92%).

edit: if you telnet in and run xdslcmd info --stats You can check this for definite.

Bearer 0 INPRein = 0 is retx low
Bearer 0 INPRein = 1 is retx high

Edited by j0hn83 (Sun 17-Jun-18 17:36:25)

In reply to a post by j0hn83:

You have gone from retransmission low (IP profile of exactly 96.7%) to retransmission high (IP profile between 91-92%).

Indeed. I have been on 91.88% for a long time now.

In reply to a post by JB68:

In reply to a post by Andrue:

Stuff happens. Such is the nature of xDSL. Wake us up if it drops below 50Mb/s.

That 400kb/s could come in handy for me lol

Lol. To be fair I kind of understand. I lost 10Mb/s around this time last year when changing ISPs. I never did find out why and under equally mysterious circumstances it came back one Saturday afternoon. I used to be bothered by such incidents but have realised there's little you can do about it so best just to ignore it. One day when we all have FTTP such problems may be a thing of the past.

You will likely be connected to a Huawei cabinet.
Before the ISP change you were probably on a 3dB SNRM target with retransmission (G.INP).

Switching ISP effectively resets the DLM profile of your line and with Huawei cabinets that means you revert to old style interleaving/INP.
You also revert to a 6dB SNRM target.

Interleaving takes roughly 10% of your sync speed.

For shorter lines a reduction from a 6dB SNRM target to a 3dB SNRM target is worth between 8-11Mb/s.

I've seen a line lose 18Mb on the switch from 3dB retransmission to 6dB interleaved.