In this course, part 3 of 3 in the Cisco ICND2 (200-101) series, we cover switch loop prevention, enhancing Spanning Tree Protocol convergence, as well as file management, IOS upgrades, and password recovery.
In a switched networked environment, which currently dominates enterprise business, we need to provide a quick converging, and loop free layer 2 network. This involves understanding Spanning Tree Protocol, which is a simple solution to prevent layer 2 loops, yet can create complex topologies, and potentially a slow converging network, which can cause issues for our users. We will look at how Spanning Tree Protocol operates, and then examine how it converges on a real network. Then we dive into looking at how we can modify the Spanning Tree Protocol topology and improve performance. Additionally, we will perform an IOS upgrade on a router and a switch, and even cover how to fix an upgrade gone awry. Also, you will learn how to change the password on a router or a switch when you do not know the password.