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Fat AP and Cloud AP V200R010C00 Command Reference

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authentication ip-conflict-check enable

authentication ip-conflict-check enable


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.


authentication ip-conflict-check enable

undo authentication ip-conflict-check enable




Authentication profile view

Default Level

2: Configuration level

Usage Guidelines

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.
After this function is disabled, IP address-based authorization does not take effect.


# Enable the client IP address conflict detection function.

<Huawei> system-view
[Huawei] authentication-profile name test 
[Huawei-authentication-profile-test] authentication ip-conflict-check enable
Updated: 2019-11-21

Document ID: EDOC1100064352

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