Solved if you have 2 network cards and both connected to different ISP.

[aljugan]

Dear User ,

i have one question that i have connected my computer to two different internet connections. one through lan and other with wifi. for the lan default gateway is 192.168.1.1 and gateway for wifi is 192.168.3.1. for example i am downloading any file where i can know which connection is downloading this file ???

Best Regards

 

[Alejandro85]

The netstat command, from a command line, can help here. It show a brief report of all active connections. Look at the estabilished ones, and then look at the local IP column, that will tell from which network card the connection was done, from which you can get what ISP is actually serving it.
The destination IP can be useful to distinguish which network activity are you looking at.