The authentication ip-conflict-check enable command enables the client IP address conflict detection function.
The undo authentication ip-conflict-check enable command disables the client IP address conflict detection function.
By default, the device detects whether client IP addresses conflict with each other.
IP address conflict detection is performed based on an IP hash table. If the hash value of a client IP address conflicts with a value in the IP hash table on the device, the client cannot be authenticated. To prevent unauthorized users from accessing the network using forged IP addresses, you can enable the IP address conflict detection function. Some clients may use the same fixed source IP address to send ARP probe packets. If multiple such clients exist on the network, IP address conflict occurs. In this case, you can disable the IP address conflict detection function.