What is a ICMP Flood, Ping Flood, Smurf Attack?

Since ICMP packets should be rare in a normal traffic situation, F5 BIG-IP Local Traffic Manager (LTM) and BIG-IP Advanced Firewall Manager (AFM) are able to mitigate ICMP floods by limiting the rate of all ICMP traffic, and then dropping all ICMP packets above this limit. BIG-IP LTM and BIG-IP AFM provide the ability to set a limit on the maximum number of ICMP packets to prevent the server from ever getting flooded.