Setting the MAC address for an Ethernet interface or subinterface
In a network, when the Layer 3 Ethernet interfaces or subinterfaces of different devices have the same MAC address, the devices might fail to communicate correctly. To eliminate the MAC address conflicts, use the mac-address command to modify the MAC addresses of Layer 3 Ethernet interfaces or subinterfaces.
To set the MAC address of an Ethernet interface or subinterface:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter Ethernet interface or subinterface view. | interface interface-type { interface-number | interface-number.subnumber } | N/A |
3. Set the MAC address of the Ethernet interface or subinterface. | mac-address mac-address | By default, the MAC address of a Layer 3 Ethernet interface or subinterface is not set. |