Chapter 30. LAN Switching and VLANs
Understand the relationship of LAN switching to legacy internetworking devices such as bridges and routers.
Understand the advantages of VLANs.
Know the difference between access and trunk links.
Know the purpose of a trunk protocol.
Understand Layer 3 switching concepts.
A LAN switch is a device that provides much higher port density at a lower cost than traditional bridges. For this reason, LAN switches can accommodate network designs featuring fewer users per segment, thereby increasing the average available bandwidth per user. This chapter provides a summary of general LAN switch operation and maps LAN switching to the OSI reference model.
The trend toward fewer users per segment is known as microsegmentation ...