I need a network flooding program (I tryed ping -f this does not create a high ammount of traffic) like a DoS program I am not going to nuke anyone but I need to stress test my network.
By default, ping uses a fairly small packet size. Check out the man page for ping. there are options that can get the load up there. I've been able to get (if, that is, I'm reading the gkrellm meter correctly :-) ) as much as 26MB/sec blasting through the interface when pinging the LAN's broadcast address.
Be sure to play nice and let others know that you're doing this testing.