Speed drop and increase in min latency?

[davecollins]

Morning all,

Is anyone else seeing any issues today?

My speed has dropped by about a third. Looks like this began shortly after 4.30 am:

[alexwright]

Nope!



Interesting we both had a dropout between 2pm - 4pm yesterday though.

Edit: Speed is normal too:

[andrue]

Morning all,

Is anyone else seeing any issues today?

My speed has dropped by about a third. Looks like this began shortly after 4.30 am:

Looks a lot like interleaving has been applied by the DLM. It's the right kind of time and shows a brief disconnect. If it's due to temporary line changes the DLM should remove it again in a couple of weeks. But for most lines it's the result of increasing cross-talk as more and more people on your cabinet take up the service. That means you're probably stuck with it until/unless BT rolls out vectoring.

One way to check if it's your line or the network is go to http://craigswebsites.co.uk/ping/ and search for IDNet. With a lot of network issues you can see all the lines being affected. There were some minor packet loss issues earlier this week and they showed on all the graphs.

The only way to be sure would be to unlock your modem and look at the stats.

[davecollins]

Thanks Andrue.

Any ideas as to how I unlock the info from the modem?

Using the BT openreach thing hooked up to a draytek 2820.

Thanks for your help,

Dave

[andrue]

Thanks Andrue.

Any ideas as to how I unlock the info from the modem?

Depends which model it is. If it's the Huawei then it's just a matter of uploading new firmware ( http://huaweihg612hacking.wordpress.com/about/ ). If it's the ECI it needs soldering (or a clothes peg ) http://hackingecibfocusv2fubirevb.wordpress.com/2012/08/13/a-solder-free-uart-connection/.

The only issue I've ever had with my Huawei is that last weekend after being unlocked for over a year the modem stopped responding meaningfully to the Telnet status commands and my normal stats program wouldn't work. The modem worked in all other respects so I ignored it. The next weekend I decided to try and dig deeper and while playing with Telnet it rebooted itself. No harm done and I've never heard anyone else report this but I thought I'd mention it.

[davecollins]

And now it's back:



As is the speed:



Not that I'm complaining of course!

Thanks to all who replied.

[andrue]

Wow, if it was DLM then it relented pretty quickly. Here's hoping it stays that way but what most people are seeing is a gradual deterioration. I started off at full speed but over the last year the sync speed has dropped from 80Mb/s to 65Mb/s. It's not dropped any further in the last month though but interleaving is now permanent.

[zappaDPJ]

It took DLM around a month to recover my line after a recent 5 day outage. I had no idea it could take that long and I also didn't realise the degree of disruption it causes every time it manages a change.

[davecollins]

Does this not suggest it may not have been DLM?