VLAN MAC address

The switches have one unique MAC address for all of their VLAN interfaces. You can send an 802.2 test packet to this MAC address to verify connectivity to the switch and you can assign an IP address to the VLAN interface. When you Ping that address, ARP will resolve the IP address to this single MAC address.

In a topology where a switch has multiple VLANs and must be connected to a device having a single forwarding database, some cabling restrictions apply. For more on this topic, see Multiple VLAN considerations.