drop illegal-mac enable

Function

The drop illegal-mac enable command enables the switch to discard packets with an all-0 invalid MAC address.

The undo drop illegal-mac enable command disables the switch from discarding packets with an all-0 invalid MAC address.

By default, the switch does not discard packets with an all-0 MAC address.

Format

drop illegal-mac enable

undo drop illegal-mac enable

Parameters

None

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Some legacy computers or network devices may send packets with an all-0 source or destination MAC address when their network adapters fail. You can run the drop illegal-mac enable command to configure the switch to discard such packets. After receiving the packets with an all-0 source or destination MAC address, the switch discards the packets.

This command reduces incorrect MAC address entries on the device.

Precautions

If the alarm function is disabled on the device, the network management system cannot receive any alarm message.

Example

# Configure the switch to discard packets with an all-0 invalid MAC address.

<HUAWEI> system-view
[HUAWEI] drop illegal-mac enable