VLAN MAC address reconfiguration
Switches use one unique MAC address for all VLAN interfaces. If you assign an IP address to a VLAN interface, ARP resolves the IP address to the MAC address of the routing switch for all incoming packets.
The Layer 3 VLAN MAC Configuration feature allows you to reconfigure the MAC address used for VLAN interfaces, using the CLI. Packets addressed to the reconfigured Layer 3 MAC address, such as ARP and IP data packets, are received and processed by the HPE routing switch.
Packets transmitted from the routing switch (packets originating from the router and forwarded packets) use the original switch MAC address as the source MAC address in Ethernet headers.
ARP Sender MAC address field
Source MAC address field in the Ethernet frame header
When reconfiguring the MAC address, you may specify
a keepalivetimeout to transmit heartbeat packets
that advertise the new MAC address
By configuring the MAC address of the previously installed router as the MAC address of each VLAN interface on a switch, you can swap the physical port of a router to the switch after the switch has been properly configured in the network.