To start using layer 3 routing, navigate to the Switching > Configure > Routing & DHCP page. You can configure a port as a Layer 2 interface or a Layer 3 interface. Sign in with your Cisco SSO or create a free account to start. Therefore, learning about some basic switch design and configuration principles will prove beneficial for your professional career. This scenario will fit most SMB networks (or even bigger ones) that have a few. A layer 3 Switch is a special type of networking device which is able to perform/execute functions of 2 layers of the OSI Model i. In simple words, a Layer 3 Switch is a networking device that can perform switching (functions of. This article covers basic and advanced configuration of Cisco Catalyst Layer-3 switches such as the Cisco Catalyst 3560G, 3560E, 3560-X, 3750, 3750E, 3750-X, 3850, 4500, 6500, 9300, 9400 series, and extends to include the configuration of additional features considered important to the secure and. In this sample chapter from Switching, Routing, and Wireless Essentials Companion Guide (CCNAv7) for Cisco Networking Academy students, you will learn how to troubleshoot common inter-VLAN configuration issues.