Sudden increase in ping

[Ray]

I had a loss of ppp for some reason at 07:15 this morning and on reconnection my ping has suddenly gone up from a steady 13ms to 43ms, interleaving is still off.

Has anyone else seen anything like it this morning?

[Gary]

I had a loss of ppp for some reason at 07:15 this morning and on reconnection my ping has suddenly gone up from a steady 13ms to 43ms, interleaving is still off.

Has anyone else seen anything like it this morning?

All ok here Ray, no issues with ping.

[DorsetBoy]

Umm......... that shows that you resynched and your throughput is lower, therefore you have more overhead and the SNR is higher.

[Ray]

No, it didn't resynch, only lost ppp according to the router system uptime, and my SNR and throughput are still the same as they've always been, Dorset.

[Rik]

Pings are fine here, Ray. Are BT pulling anything apart in your area?

[Ray]

Not that I'm aware of, Rik, though I did have a 2 hour outage at 2:00am about 3 days ago when one of Birmingham nodes that my exchange is on went down, though everything came back as normal afterwards. 

[Rik]

I really don't know what to suggest, Ray, beyond letting support know on Monday if the problem continues.

[Ray]

I'll do that, Rik, seems strange that it's been running at 12-13 ever since I had interleaving turned off now it's jumped to 30-40, a reboot of the router has made no difference.

[Rik]

Does the router indicate if interleaving is back on?

[Ray]

It's still indicating that interleaving is off, Rik, and this BT speedtest seems to confirm that: -

Download speedachieved during the test was - 6364 Kbps
For your connection, the acceptable range of speeds is 1200-7150 Kbps.
Additional Information:
Your DSL Connection Rate :8128 Kbps(DOWN-STREAM), 832 Kbps(UP-STREAM)
IP Profile for your line is - 7150 Kbps

[Rik]

The speed seems to rule out congestion, so I don't know how to explain it, Ray.

[Ray]

It's puzzling, Rik, something somewhere was certainly upgraded at the beginning of this week, last weekend I was struggling to get above 2Mbs speeds yet this week I've not had a test below 6Mbs.

[Rik]

I wonder if BT have configured something wrongly?

[Ray]

Yes, I was wondering that too, Rik.

[Rik]

One day, all this will change. 

[Ray]

 

Will we still be around when it does, though, Rik.

[Rik]

Probably not, but Lance may be. 

[Ray]

Probably the only one of us. 

[pctech]

Might be worth checking http://status.zen.co.uk/broadband/, had a loss of PPP during a late night surfing session and it turned out to be BT maintenance.

[Ray]

Thanks, Mitch, nothing showing for this morning, but I see the outage I saw on the 12th was to change all the ATM line cards.

[Steve]

What evidence are you using Ray to say that interleave has not been applied?

[Rik]

Said the defence barrister.

[Steve]

It was a bit stern

[Rik]

 

[zappaDPJ]

I had a loss of ppp for some reason at 07:15 this morning and on reconnection my ping has suddenly gone up from a steady 13ms to 43ms, interleaving is still off.

Has anyone else seen anything like it this morning?

Not me but I had the same thing happen on my FTTC connection some while ago. I had a 7ms ping for about a month but a loss of ppp resulted in my ping jumping to 16ms. I believe I also lost around 5 Mb/s off my profile at the same time.

[Ray]

What evidence are you using Ray to say that interleave has not been applied?

I was going by the fact that my IP profile and synch speed hadn't changed, Steve, but having Telnetted into the router this morning and displaying the adsl status it would seem that interleaving has been re applied. 



> adsl status
  --------------------------- ATU-R Info (hw: annex A, f/w: annex A) -----------
   Running Mode            :    G.DMT       State                : SHOWTIME
   DS Actual Rate          :  8128000 bps   US Actual Rate       :   832000 bps
   DS Attainable Rate      : 10016000 bps   US Attainable Rate   :  1324000 bps
   DS Path Mode            :  Interleave    US Path Mode         :  Interleave
   DS Interleave Depth     :       64       US Interleave Depth  :        4
   NE Current Attenuation  :       27 dB    Cur SNR Margin       :       12  dB
   DS actual PSD           :    19. 9 dB    US actual PSD        :    12. 4   dB
   ADSL Firmware Version   : 232201_A
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :       13 dB    Far SNR Margin       :       16  dB
   CO ITU Version[0]       : 00005453       CO ITU Version[1]    : 00005443
   DSLAM CHIPSET VENDOR    : < TI >
>

[Steve]

I guess that's what I suspected Ray, you've almost certainly got a modem chipset that allows a full sync and thus max profile with interleave on.

[Ray]

Looks that way, Steve, looks like I will probably have to put up with it as I've had interleaving removed once already.

[Technical Ben]

I dread the day mine ever gets turned back on.
Option 1) I get 1 error in 3 years. The exchange carries on as normal, that's 99.99999999999% correct sync and data throughput.
Option 2) I get 1 error in 3 years, BT panics like it's the end of the world, and turn on interleaving for the rest of time.

I know which option is least problematic. Strange how BT are the only "problem" in that list. 

[esh]

Apparently when I changed to IDNet that counted as a service disruption and interleaving got applied

[pctech]

Amazing also how a feature designed to stabilise lines causes such much problem too.

[Rik]

Apparently when I changed to IDNet that counted as a service disruption and interleaving got applied

It would do if you moved from BT. 

[pctech]

My earlier post should have read 'such problems too'

Please excuse my Engrish 

[Rik]

I thought it was an 87, Sweet and sour such much.

[Ray]