What distinguishes traditional routing from router-on-a-stick?
-
Traditional routing is only able to use a single switch interface. Router-on-a-stick can use multiple switch interfaces.
-
Traditional routing requires a routing protocol. Router-on-a-stick only needs to route directly connected networks.
-
Traditional routing uses one port per logical network. Router-on-a-stick uses subinterfaces to connect multiple logical networks to a single router port.
-
Traditional routing uses multiple paths to the router and therefore requires STP. Router-on-a-stick does not provide multiple connections and therefore eliminates the need for STP.
Traditional inter-VLAN routing requires a physical router interface connected to a separate switch port for each VLAN. In contrast, router-on-a-stick uses a single physical router port configured with multiple logical subinterfaces, each corresponding to a different VLAN, connected to a trunk port on the switch.