Apparently you are new and while there is nothing wrong with that certain questions will get certain responses. What I believe Negative is trying to say to you is learn how to use your search engines.

www.google.com

Type in flooding rather than posting something like that on here. I will give you some help because if you do not know what flooding is you will get information just about flooding having to do with rain.

http://www.fortunecity.com/bennyhill.../irc-flood.htm

This is just one type of flooding.

I got this by searching the net with google and the fact that I already know what flooding is and typed in irc flooding.

when I searched under packet flooding I found this link:
http://www.compsvcs.com/ddos.html

Good Luck