The mac-address trap hash-conflict enable command enables the trap function for the MAC address hash conflict.
The undo mac-address trap hash-conflict enable command disables the trap function for the MAC address hash conflict.
By default, the trap function for the MAC address hash conflict is enabled.
To improve the MAC address forwarding performance, the MAC address table of the device is saved using a hash link. When the same key value is obtained for multiple MAC addresses according to the hash algorithm, some MAC addresses may be not learned. That is, the MAC address hash conflict occurs.
In this situation, the MAC address table space is not full but the MAC address entry cannot be learned. When the MAC address hash conflict occurs, traffic with this destination MAC address can be only broadcast. This occupies device bandwidth and resources. You can replace the device or network adapter of the terminal.
After the trap function for the MAC address hash conflict is configured, the administrator can immediately discover MAC address hash conflicts.