The anti-ddos udp-fingerprint-learn packet-length enable command enables the packet length learning function.
The undo anti-ddos udp-fingerprint-learn packet-length enable command disables the packet length learning function.
anti-ddos udp-fingerprint-learn packet-length enable
undo anti-ddos udp-fingerprint-learn packet-length enable
None
System view
2: Configuration level
By default, the function of packet length learning is disabled.
# Enable the packet length learning function.
<sysname> system-view [sysname] anti-ddos udp-fingerprint-learn packet-length enable