- Network layer devices combine multiple broadcast domains.
Dividing a Physical Interface into Subinterfaces
- Physical interfaces can be divided into multiple subinterfaces.
Routing Between VLANs with 802.1Q Trunks
- Inter-VLAN routing using a router on a stick utilizes an external router to pass traffic between VLANs.
- A router on a stick is configured with a subinterface for each VLAN and 802.1Q trunk encapsulation.