Configuring the Switch to Discard Packets with an All-0 MAC Address
Context
If the switch receives packets that contain an all-0 source or destination MAC address, it may indicate that the sending device is faulty. You can configure the switch to discard these packets and send an alarm to the network management system (NMS). The alarm contains information that is useful for troubleshooting the faulty device.
Procedure
- Run system-view
The system view is displayed.
- Run drop illegal-mac enable
The switch is enabled to discard packets with an all-0 MAC address.
By default, the switch does not discard packets with an all-0 MAC address.
- (Optional) Run drop illegal-mac alarm
The switch is configured to send an alarm to the NMS when receiving packets with an all-0 MAC address.
By default, the switch does not send an alarm when receiving packets with an all-0 MAC address.
The drop illegal-mac alarm command allows the switch to generate one alarm. You must configure the drop illegal-mac alarm command multiple times if more than one alarm is required.