# Example: Layer 2 Engine Inline Interfaces in inline mode

An example of deploying a Layer 2 Engine in the traffic path in inline mode.

The following illustration shows the interfaces of the inline Layer 2 Engine.

Figure: Inline Layer 2 Engine

In this example, the IP address on Interface ID 0 is configured as the Control IP address for management connections. Interface ID 1 and Interface ID 2 are an inline interface pair that share the Logical Interface, called Inline. Traffic comes in through Interface ID 1. Any traffic that is the Layer 2 Engine allows leaves through Interface ID 2.

The administrator does the following:

1. Creates a Single Layer 2 Engine element and selects the Log Server to which the Layer 2 Engine sends its log data.
2. Creates a Logical Interface called Inline for the Inline Interface pair.
3. Defines Interface ID 0 as a normal interface and adds an IP address to it.
4. Defines Interface IDs 1 and 2 as an inline interface pair and selects the Logical Interface called Inline for the pair.
5. Saves the initial configuration of the engine in the SMC Client.
6. Connects the network cables to the appropriate physical interfaces on the engine.
7. Maps the interface IDs to the physical interfaces in the Security Engine Configuration Wizard and makes initial contact with the Management Server.
8. Installs a Layer 2 Engine Policy in the SMC Client to transfer the configuration to the engine.