BT Traffic Shaping

RobH

RobH

RobH

Soldato
Joined
9 May 2005
Posts
4,530
Location
Nottingham
I wasn't aware of how bad BT's traffic shaping was until recently, I've been with them since 2002 and never had any major problems with them but I noticed that peer to peer transfers have bceome rediculously slow recently. It seems that they are traffic shaping all non HTTP because I have the same results with FTP transfers, I have to run simultaneous connection to get a half decent speed and even then it doesn't run as fast as it should.

After resorting to leaving certain transfers running overnight I began to notice that the majority of them would be complete the next day despite them having an ETA of about 18 hours the previous night. I decided to investigate by running a torrent and then watching the speed graph. I discovered that they stop this traffic shaping at 1:00 AM because I was running a transfer at around 80 kb/s then bang on 1:00 AM it jumps up to 350 kb/s. I have seen this happen several times now.

shaping.jpg


I am about to be put onto their 21CN ADSL2+ equipment which is part of their Next Generation Speed Trial in the West Midlands. Hopefully this traffic shaping will go away as they have stated before that they would no do traffic shaping on their 21CN service. The trial gives me free broadband for 6 months otherwise I'd be moving to another ISP.
 
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think yourself lucky. when i was on BT, i was throttled to 12kb/s during peak times - and this was march last year. i since left a loooooooooong time ago. :D
 
Heck i can only get 1 Mbit where I am (only because of a Billion 7300 Router), and for a long time to come...

Bt even put me on a FUP and throttled it to 0.5Mbit between 6pm and 11pm LOL, go bt go!

No LLU/21CN WBC status/21CN PSTN switchover target/Cable either, so love thy BT
 
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Is this traffic shaping to do with BTVision thing taking priority ? I'm on BT, not in a Freeview covered area so BTVision is not available & have no shaping whatsoever, it trundles along at the same speed all day.
 
RobH said:
I wasn't aware of how bad BT's traffic shaping was until recently, I've been with them since 2002 and never had any major problems with them but I noticed that peer to peer transfers have bceome rediculously slow recently. It seems that they are traffic shaping all non HTTP because I have the same results with FTP transfers, I have to run simultaneous connection to get a half decent speed and even then it doesn't run as fast as it should.

After resorting to leaving certain transfers running overnight I began to notice that the majority of them would be complete the next day despite them having an ETA of about 18 hours the previous night. I decided to investigate by running a torrent and then watching the speed graph. I discovered that they stop this traffic shaping at 1:00 AM because I was running a transfer at around 80 kb/s then bang on 1:00 AM it jumps up to 350 kb/s. I have seen this happen several times now.

shaping.jpg


I am about to be put onto their 21CN ADSL2+ equipment which is part of their Next Generation Speed Trial in the West Midlands. Hopefully this traffic shaping will go away as they have stated before that they would no do traffic shaping on their 21CN service. The trial gives me free broadband for 6 months otherwise I'd be moving to another ISP.
Click to expand...
Yes, i've had BT's '1am syndrome' for months and months now and assumed it was BT Vision related. In 5 days i will be on ADSL2 with o2 :p
 
I have now been siwtched over to the BT ADSL2+ Trial, getting about 8Mb down and 1.1 Mb up which is quite good considering I only got half that on ADSL Max (the line is still being tweaked too). I'll do a test to see if they are traffic shaping later.

EDIT: Yep they are still shaping, getting 4.2 kb/s down on torrent file with a seed to peer ratio of 72:1 which should max out a connection easy, I'll see if it drops off at 1AM.
 
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