Chapter 8. WAN Module

This chapter covers the following topics:

Leased Line

SONET/SDH

Resilient Packet Ring

Dial Backup

Virtual Private Network

WAN connectivity is a key element in the resilient IP infrastructure. Most IP networks require some form of WAN connectivity to connect two or more location together. Hence, the robustness of the WAN connectivity is important.

WAN connectivity exists in many forms, including as a simple leased circuit between two offices that are located near each other, and long-haul submarine cable systems. In this chapter, you learn about popular choices of WAN connectivity available in the industry. You also look at what the issues are, both technically and operationally, to provide a resilient IP WAN infrastructure. ...

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