Chapter 6. Designing Fault-Tolerant IPSec VPNs
Chapter 2, “IPSec Overview,” and Chapter 3, “Enhanced IPSec Features,” presented the fundamental concepts of IPSec. Chapter 5, “IPSec VPN Architectures,” covered IPSec VPN architectural models at a conceptual level. In the next few chapters, you will focus on the design aspects of IPSec and begin to apply mechanisms and protocols you have learned in building real-life IPSec VPNs. In this chapter, you will explore mechanisms and architectures for fault-tolerant IPSec VPN design.
Link Fault Tolerance
Because VPN data networks are a critical element of the overall business process, you must ensure that the VPN provides a reliable service to users and their applications. This section focuses on designing ...