To start using layer 3 routing, navigate to the Switching > Configure > Routing & DHCP page. Under L3 routing tab, click Configure - which takes you to. Layer 3 interfaces forward packets to another device using static or dynamic routing protocols. You can configure a port as a Layer 2 interface or a Layer 3 interface. A routed interface is a physical port that. Many Cisco Meraki switches have L3 routing capability within the switch itself., a switch receives a packet, determines that the packet belongs to another VLAN, and sends the packet to the appropriate port within the destination VLAN. This example uses router configurations of AR3600 V200R007C00SPCc00. That is, you can assign an IP address directly on the routed port.