Chapter 5. Switching and Routing on ASA

Security Appliance VLAN Capabilities

Configuring VLANs on the security appliance is similar to configuring them on a Cisco router. They are deployed using subinterfaces. Each subinterface allows you to define a separate subnet and VLAN. This type of configuration can turn a security appliance with three physical interfaces into a security appliance with five interfaces, as shown in Figure 5-1.

VLAN configuration

Figure 5-1. VLAN configuration

Configuring subinterfaces

To configure subinterfaces for VLAN capabilities, follow these steps:

  1. Create logical and physical interfaces.

    The physical interface is gigabitethernet0/3. When you ...

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