Network Basics: Configuring Interfaces on Ethernet Switches
Administrators are tasked with configuring interfaces on network devices more than any other single thing. This makes sense—interfaces are the main points of connectivity, sending and receiving traffic throughout an organization. Configuring interfaces can be deceptively easy. Switchports might require a VLAN assignment, and often function with no other configuration at all. Router interfaces can be up and running with only an IP address.