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Cisco LAN Switching Fundamentals by Basir Sakandar - CCIE No. 6040, David Barnes - CCIE No. 6563

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Chapter 4. Layer 2 Fundamentals

This chapter covers the following topics:

This chapter explores the intricacies of virtual LAN (VLAN) design and implementation. Prior to the almost universal adoption of IP as the Layer 3 method of communication, most applications were written to rely upon Layer 2-protocols for communication. As a result, users needing to share applications and information needed to be on the same Layer 2 network. Despite the potential shortcomings of Layer 2-only designs, they are still commonly found in production networks. This chapter will also bring ...

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