Dell PowerEdge M420 Configuration Manual page 229

Command
dos-control icmp [
exit
show dos-control
Purpose
size
] Enable Maximum ICMP Packet Size Denial of Service
protections, where
(Range: 0-16376).
If ICMP Echo Request (PING) packets ingress having a
size greater than the configured value, the packets are
dropped.
Exit to Privileged EXEC mode.
View the current DoS protection settings.
size
is the Maximum ICMP packet size.
Controlling Management Access
229