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NT Zenfire FDAX data interruptions
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NT Zenfire FDAX data interruptions

  #61 (permalink)
Just a boy
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Fat Tails View Post
@steve2222: I did not consider data shaping so far, but it is a possible explanation.

I will take this into account as well. Thank you for your post.

@Fat Tails

I should also have mentioned that the reason the 3G connection was fine and ADSL was not is that Telecom NZ do not shape data on a 3G connection. The reason for this is that they believe (quite correctly) that no one is going to file download or stream over 3 G if they can avoid it because of the high costs for data on a 3G connection (at least in NZ).

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  #62 (permalink)
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steve2222 View Post
The fact that you can down load off your mobile (I assume 3G) connection, but not your landline ADSL connection has all the hallmarks of data shaping/profiling/throttling that I experienced in NZ at one time and wrote in detail about the other day in the other thread.

This was one of the ways I isolated my problem to something the ISP was doing (ie Telecom NZ were supplying my landline, ADSL broadband, mobile 3G broadband and were my ISP) so the fact that the ADSL had frequent disconnections yet the 3G didn't meant it was the ISP.

As I wrote in the other post that were shaping the data on the ADSL to give everyone a fair share of capacity at peak times and they were doing this by trying to restrict users downloading files and streaming and they can do this without affecting those just surfing a URL. Unfortunately futures trading data gets transmitted to us in a format that is the same type of data that the ISP's are trying to restrict ie they see it as file downloading or streaming data.

I would be really pushing that German ISP to open up and discuss their data shaping policy, or at least get them to confirm in writing they don't do this at which point you have isolated that as not being the issue.

The reason: data shaping by my ISP. The connection via NT is treated as bad data by the ISP for data shaping ie it is seen as file/torrent downloading or streaming whereas the connection via ZF Web Trader platform is seen as normal URL surfing by the ISP and is not shaped/throttled/profiled.

@steve2222:

You are stating a really good point here since our ISP Deutsche Telekom offers different (V)DSL lines with various bandwiths, where DT reduces only the faster lines (25 Mb/s and 50 Mb/s) to a quite low download speed after a certain amount of downloaded data / traffic is exceeded.

So, since Fat Tails and I use the same ISP and I don't suffer from any reduction of bandwith and download speed regardless of my downloaded amount of data with my 16 Mb/s connection,
maybe @Fat Tails uses a (faster) VDSL line and therefore there could be a reduction of bandwith and download speed once a certain traffic limit is exceeded...

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  #63 (permalink)
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Daytrader999 View Post
@steve2222:

You are stating a really good point here since our ISP Deutsche Telekom offers different (V)DSL lines with various bandwiths, where DT reduces only the faster lines (25 Mb/s and 50 Mb/s) to a quite low download speed after a certain amount of downloaded data / traffic is exceeded.

So, since Fat Tails and I use the same ISP and I don't suffer from any reduction of bandwith and download speed regardless of my downloaded amount of data with my 16 Mb/s connection,
maybe @Fat Tails uses a (faster) VDSL line and therefore there could be a reduction of bandwith and download speed once a certain traffic limit is exceeded...

@DayTrader 999: In fact I do have a VDSL (50Mbit/s) connection, but I do not think that the download speed is actively throttled, for several reasons:

-> I do not see any reduction in bandwidth for other downloads
-> for example I have downloaded 190 MB of replay data from the server 208.100.9.81 at average speed between 12,000 MBit and 16,000 MBit/s
-> compare this to the download speeds of 300 MBit/s that the resource monitor showed for the download of replay data from the 7ticks.com server

Both www.bigmiketrading.com and Interactive Data: 7ticks - Ultra-low Latency Trading Infrastructure are hosted at Chicago. For one of those servers I get a perfect download while I get stopped out when downloading from the other one. However, the routing is not the same.

-> route to bigmiketrading.com goes via the router 194.25.210.46 (Transit11, Oldenburg)
-> route to 7ticks.com goes via the routers 80.156.161.46 (Transit12, Nürnberg) & 80.157.128.230 (Transit15, Nürnberg)

It seems that the server Transit11 does not cause problems, while the servers Transit12 and Transit15 let not pass the traffic. It is indeed possible that they have technical problems at Nuremberg or that they are performing some traffic shaping experiments. But all this is speculation. As I said I will enquire on Monday.

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  #64 (permalink)
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Quoting 
As I said I will enquire on Monday.

I wish you luck on Monday.

I am so disgusted with the customer support of DT.
I have 2 tickets running with them and wait since a week.

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  #65 (permalink)
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puma View Post
I wish you luck on Monday.

I am so disgusted with the customer support of DT.
I have 2 tickets running with them and wait since a week.

This seems to be a very special problem. One cannot expect that the "normal" support team can help.

If within the next days nothing changes I will write to the DT-CEO.

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  #66 (permalink)
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It's a ZF money problem as well

I found it a bit strange/suspicious on Thursday:
First there were so many outages and then from about 17:00 CET the ZF connection broke down completely and also in the evening I didn't get a connection. Others had also no connection.

And not to forget: It's also a ZF problem because they make less money. Better they react as well by contacting all possible companies!

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  #67 (permalink)
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Fat Tails View Post
In fact I do have a VDSL (50Mbit/s) connection, but I do not think that the download speed is actively throttled, for several reasons:

-> I do not see any reduction in bandwidth for other downloads
-> for example I have downloaded 190 MB of replay data from the server 208.100.9.81 at average speed between 12,000 MBit and 16,000 MBit/s
-> compare this to the download speeds of 300 MBit/s that the resource monitor showed for the download of replay data from the 7ticks.com server

But all this is speculation. As I said I will enquire on Monday.

@Fat Tails:

Since the download speed on your connection will only be reduced to 6 Mb/s when you exceed a download / traffic limit of 200 GB and all other downloads run at full speed,
there should be plenty of room remaining to fill with market replay data.

So I'm already really excited how DT will explain these issues, best of luck...

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  #68 (permalink)
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I talked to other ppl that have a different ISP and they have no problems. Do the other ISP use other servers? Thought they all use the same servers in Chicago?

What I do not understand is, that the problem starts every day around noon.

Why don't we have connection issues all over the day?

As i read in the DTAG Forum, they still have no feedback. So we do not know if it is a DTAG problem or not, yet.

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  #69 (permalink)
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Balanar View Post
I talked to other ppl that have a different ISP and they have no problems. Do the other ISP use other servers? Thought they all use the same servers in Chicago?

What I do not understand is, that the problem starts every day around noon.

Why don't we have connection issues all over the day?

As i read in the DTAG Forum, they still have no feedback. So we do not know if it is a DTAG problem or not, yet.

@Balanar: The problem is not the destination server in Chicago. The problem are the transit servers that are used to do the routing.

When a connection is etablished between your PC and the destination server, the data packets are transmitted from server to server. Even for the same destination server, Deutsche Telekom will use different transit servers. I am located in Berlin and found out that my packets were either being sent via Nürnberg or Oldenburg. It seems that the Nürnberg route is jammed.

This is like a traffic jam on a highway. If you use a different route then there is no problem. My Telefonica connection to the 7ticks.com Chicago data server used a different route and the download was possible. The bigmiketrading. com server is also located in Chicago. This time the connection was routed by Deutsche Telekom via Oldenburg and there was no problem.

Deutsche Telekom needs to find the bottleneck, that is the transit server that caused the problem.

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  #70 (permalink)
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Thank you very much.

Maybe you should explain this to the DTAG lol.

Connection issuses just started five minutes ago.

I am really confused about the timing. It is always around this time.

Why don't you have the issues all day long?

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