Overview/Description Switched Ethernet has been the dominant LAN technology for more than a decade, and VLAN-based switched infrastructures are at the core of every campus network. A good understanding of the processes involved in Layer 2 switching and being able to diagnose and resolve Layer 2 switching problems in those environments is a fundamental skill that any network engineer should have. A primary tool in building highly available networks is the use of redundant devices and links. With these redundant links, bridging loops can be introduced, resulting in broadcast storms that can...