Chapter 11. The Virtualized Access Layer

Chapter 3, “A Basic Virtualized Enterprise,” briefly described the typical multilayer campus architecture, with its traditional building blocks of access, distribution, and core. Other chapters looked at how the distribution and core must change to support virtualized services. Now it is time to look at the access layer.

The discussion is organized into three broad sections:

  • A short section on the access layer to review the key features deployed in the wiring closet

  • The issues of authentication and authorization

  • A design example

Access Layer Switching

The role of the access switch is to physically aggregate user ports and switch user traffic both locally and to the distribution layer.

Figure 11-1 shows a wiring ...

Get Network Virtualization now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.