Inter-VLAN Routing
Our two users (PC1 and PC2) communicate with each other, and they can communicate with other devices in the same VLAN (which is also the same IP subnet), but they cannot communicate with devices outside their local VLAN without the assistance of a default gateway. A router could be implemented with two physical interfaces: one connecting to an access port on the switch that is been assigned to VLAN 10, and another physical interface connected to yet a different access port that has been configured for yet a different VLAN. With two physical interfaces and a different IP address on each, the router could perform routing between the two VLANs.
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