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Have to confirm connection problems from Berlin to Mirus/Dorman/Zenfire too. NT7 interrupts at some point in the evening (CET) and is not able to connect back to zenfire. Tried everything on the hardware /software side. Same problems with Multicharts. Tried to solve it with Mirus support - no result at all. They traced the connection and said that ping of say 130 is way to high and bandwith of 6MBit/s is the absolute minimum. So reason for connection problems is my ISP. But man, I remember when I daytraded lot of stocks back in the end of the 90ies on a 64k ISDN line and it worked like a charm.
Quite frustrating.
The question for me is: Is it Telekom (it is my german ISP) because the ping is really to high? Pro: There is a thread in the telekom forum that many guys (mostly "gamer") experience latency problems especially in the evening hours (starting 7pm EST) since the end of november 12. Contra: My experience with ISDN connection more than 10 years ago (but eventually I mixe things up here that cannot be mixed - I am far away from being a technican).
Or is it the Zenfire datafeed at all?
And last question: What to do beside just sit and wait?
Did they really write 130ms was too high, and 6 Mb/s a minimum ???
This is not a serious answer, you may have a bad router somewhere between Berlin and ZF servers, but this kind latency/bandwidth criteria is ridiculous.
I know some guys in the middle of nowhere who had no problems with ZF and 512 kb/s and 300 ms of latency. I also had to make some bandwidth statistics this morning for my VPS business, and the average bandwidth used by my customers, whatever the data feed they use, is around 10 kb/s... So asking for 6 Mb/s, 600 times more than the average usage, I don't get it.
Are you able to do some regular pings and traceroute to ZF servers, when the problem occurs ?
A dying router, or a bad configuration between you and the servers could explain what's wrong.
I've got a ping time of around 190-200 ms to IP 50.115.112.117 (which should be zen-fire.com referring to 'Whois') from Germany right now.
Since I use Deutsche Telekom as my ISP and got a bandwith of 16 Mbit/s, I never experienced any serious and / or longer lasting disconnections yet, except some occasionally outages at the weekends.
Are there any other Zen-Fire IP adresses to check out ?
I don't remember which was the right IP to use, but it's not this one, this is their web site address.
AFAIK, the name associated with a good IP address to test was an *.7ticks.com.
After being connected to Zen-Fire, a "netstat -n" may show you where your platform is connected.
Try to:
- do a "netstat -n"before being connected to ZF, and do a screenshot (or copy all lines somewhere in a text editor),
- do the same "netstat -n" while connected to ZF, and do a screenshot (or copy all lines somewhere in a text editor),
- compare both lines: the "new" connections are the ZF connections.
Not sure if the below help, I am not a techie so I did not have much luck trying to Ping these.
The list below came from NT in a response to a post of mine on their site where they were trying to help me with very short duration disconnections. …
I also agree with Sam that the Mirus response re ping and bandwidth is wrong. I regularly record Ping from New Zealand to ZF servers of over 500ms (which in my view is too high compared to a Speedtest to a random Chicago server of half that) and I can still trade just fine.
Several years ago ZF gave me access to a beta site for a ZF Web Trading platform and that shows you exactly what your ping time is to ZF servers - that is how I know I can get up over 500ms.
I got exceeding time limit for all IPs listed in the thread, but I tested IP 64.202.118.81, to which I'm actually connected, and I get a latency of about 240 ms...
So, that's another good reason for me to stick with @sam028 VPS...
I think the problem is that ZF don't allow their servers to be pinged. I recall I read somewhere that they stop this so ping requests don't interfere with the performance of the live data service.
Right now I have 569ms reported on the beta ZF web trader portal to me here in New Zealand.