Chapter 12. L2TP

This chapter covers the following topics:

  • Overview of Layer 2 Tunneling Protocol— This section defines L2TP, discusses different types of L2TP tunnels, and covers the benefits of using this method of setting up VPNs.

  • Functional Details of L2TP— Because L2TP is fairly involved, this section gives details on how an L2TP session gets established.

  • Case Studies— This section covers case studies involving L2TP implementations aimed at solidifying your understanding of L2TP.

This chapter talks about the Layer 2 Tunneling Protocol (L2TP). L2TP uses IP to create a tunnel in which Layer 2 frames are encapsulated. We will look at the types of L2TP tunnels as you try to gain an understanding of L2TP. We will look at the messages that are ...

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