As described in the introduction to this book, numerous technologies, when combined, make up today's integrated MPLS/IP networks. Clearly very few people have a complete grasp of all these technologies and how they interact. However, a general understanding of each is necessary to gain the most value from the design studies in this book. Therefore, our aim within the first two chapters is to provide a high-level overview of the relevant technologies. This first chapter focuses on the technologies that have the most impact at the edge of the network. It concentrates on Layer 3 VPN, multicast VPNs, IPv6, and pseudowire.
It is not the intention of this chapter to provide all the technical details for each technology. Rather, this chapter focuses on the essential aspects as well as more-recent developments of these technologies. It also gives useful references to various books, IETF drafts, RFCs, and so forth that you can check if you're interested in more technical details.
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