Part 3. Layer 2 concepts
In part 3, we will build upon your foundational understanding of how switches provide connectivity within a LAN. You have already grasped the basics of MAC address learning and aging, frame forwarding and flooding, and other key operations of switches. Now, let’s delve deeper into several advanced features that optimize and secure LANs. We’ll start in chapter 12 by exploring virtual LANs (VLANs), which allow us to divide a single physical switch into multiple virtual switches, dividing the LAN into multiple separate segments and enhancing its security and efficiency.
In chapter 13, we will continue on the topic of VLANs, covering two auxiliary protocols that streamline the configuration and management of VLANs on Cisco ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access