Which inter-VLAN routing option uses a router with individual physical interfaces connected to a switchport configured as access ports in separate VLANs?
- router on a stick
- Layer 3 switch
- dynamic routing
- Traditional inter-VLAN routing
Explanation: Traditional inter-VLAN routing (referred to in the sources as Option 1) is the method that requires multiple physical interfaces on both the router and the switch. In this setup, each individual router interface is connected to a specific switch port that has been associated with a single-data VLAN, which characterizes that port as an access port. Devices on these separate VLANs send traffic through the dedicated physical link to the router to reach other subnets.
While this configuration facilitates the routing process in a multi-VLAN environment, it is not very scalable because the router can quickly run out of physical interfaces as more VLANs are added to the network. This is distinct from router on a stick, which uses a single physical interface configured as a trunk link to carry multiple VLANs via subinterfaces, or a Layer 3 switch, which uses internal virtual interfaces to route between VLANs at wire speed.
Related exam: Modules 1 – 7: Checkpoint Exam: Network Switching Answers (CCNP ENCOR v9)
