Part I: Ethernet LANs

Chapter 1: Implementing Ethernet Virtual LANs

Chapter 2: Spanning Tree Protocol Concepts

Chapter 3: Spanning Tree Protocol Implementation

Chapter 4: LAN Troubleshooting

Chapter 5: VLAN Trunking Protocol

Chapter 6: Miscellaneous LAN Topics

Part I Review

The ICND1 half of the CCNA R&S exam topics introduces the basics of Ethernet LANs and LAN switching. Part I of this ICND2 Cert Guide builds on that knowledge with six more chapters about LANs and LAN switching.

Part I discusses two major topics in depth, to a configuration, verification, and troubleshooting level on each: Spanning Tree Protocol (STP) and VLAN Trunking Protocol (VTP). Chapters 2 and 3 get fairly deep on STP, a switch feature that requires basic configuration skills, but one that requires a lot of thought to master verification and troubleshooting. Chapter 5 discusses VTP and how it can be used to advertise VLAN configuration around a network of switches, again to a troubleshooting depth.

Besides the major focus on STP and VTP, Chapter 6 introduces a small set of new topics: 802.1x, AAA authentication, DHCP snooping, and switch stacking.

Beyond the four chapters that focus on completely new material (Chapters 2, 3, 5, and 6), Chapters 1 and 4 revisit some topics you will already be comfortable with if you remember most of what you learned for the ICND1 half of the CCNA R&S certification. Chapter 1 discusses VLANs and VLAN trunks, topics duplicated in ICND1 and ICND2 exam topics. So, this book includes the same chapter in both books. For those of you who read the CCENT/CCNA ICND1 100-105 Official Cert Guide, specifically Chapter 11 of that book, then use Chapter 1 of this book as a review. Make sure you recall the details, and move quickly through that chapter.