Auto-dial out make network die

I’m using asterisk 11 on server CentOS 5. I have written a script that executes the auto-dial out daily. It’s work but sometime i get an issue that makes the network die and only can recover it by restarting network with command “service network restart”. What could cause this issue?

Nothing in Asterisk.

But we find out the this problem just happens when running the auto-dial out. Do you have any idea about how the network is die totally? What could cause that?

Power failure. Buggy system software in any of the network components. Cable unplugged. Overloaded by a DoS attack, etc.

You need to characterise more precisely what you mean by the network dies, but in general application level code can overload but not break the network, unless there is a problem in the system level code.