Mod 4: Inter-VLAN Routing

What are the 3 inter-VLAN routing options?

Legacy, router on a stick, layer 3 switch using SVIs

What is legacy inter-VLAN routing?

Relied on a router w/ multiple interfaces, each interface was connected to a switch port in different VLANs acting as the default gateway

What is router-on-a-stick inter-VLAN routing?

Requires only 1 router interface, uses 802.1q and subinterfaces

How many VLANs can router-on-a-stick inter-VLAN routing support?

50

What is special about layer 3 switches being used for inter-VLAN routing?

They use SVIs instead of physical interfaces/subinterfaces for inter-VLAN routing

What command do you use to create a subinterface on a router?

interface int.subintid

What command do you use to configure the subinterface to respond to 802.1q encapsulated traffic from a specific VLAN?

encapsulation dot1q vid

What command do you use to to configure a subinterface with a native VLAN?

encapsulation dot1q vid native

What process is used to configure a router subinterface?

Set encapsulation, assign an IP address, no shut

What command do you use to enable routing on a L3 switch?

ip routing

What are the 4 steps in setting up L3 switch inter-VLAN routing?

Create VLANs, configure SVIs, configure access ports, enable IP routing

What command do you use to configure a L3 switch interface to a L3 interface

no switchport