(Layer 3 switching is a new generation of local area network routing and switching technology, and this book is the first systematic guide to this new technology. The main contents of this book include: how to decide whether to choose Layer 3 switching technology, Layer 3 switching network design technology, Layer 3 switching case analysis, etc. It also gives benchmark tests for 6 popular Layer 3 switching products. result. Finally, for specific implementation, some recommendations are given for the management of Layer 3 switching. This book is a summary of the author's rich experience over the years and is the perfect link between theory and practice. Whether it is a network professional or a wide-ranging expert who loves the network, they will appreciate its value and weight from the plain and objective words of this book, and will benefit greatly from the process of upgrading their local area network.)