When you configure routing on a VLAN, you assign an IP address to the VLAN, which acts as a virtual router interface address for the VLAN. This IP address is not associated with a physical port. You can reach the VLAN IP address through any of the VLAN port members. Frames are routed to another VLAN IP address within the device. A port can belong to multiple VLANs; some, all, or none can perform routing.