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CCIE Practical Studies: Security (CCIE Self-Study) by Raymond Morrow, Andrew G. Mason, Dmitry Bokotey

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Configuring Advanced VPNs

The configuration section of this chapter is divided into two case studies. The first case study teaches you how to modify the conventional IPSec VPN configuration to allow point-to-point GREs. The second case study presents the DMVPN configuration.

Case Study 20-1: Using Dynamic Routing Over IPSec-Protected VPNs

In this case study, using the topology shown in Figure 20-1, you will allow the EIGRP routing information to be forwarded in an encrypted form over the full-mesh GRE tunnel setup.

Figure 20-1. Basic IPSec Topology

Loopback interfaces 12.12.12.12, 13.13.13.13, and 14.14.14.14 represent private networks on R2, ...

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