In general, one of the hardest things about Linux is learning is the command-line interface (CLI). Linux servers aren’t usually equipped with click and go menus like Windows. But this allows you to have a more robust and tailor-made system when using RHEL servers. With the knowledge and ability to effectively configure and customize a RHEL network service, you’ll be able to order to start a network or prevent and/or lessen down-time. In this tip, you’ll learn the basics of booting a Linux network and move on to turning one physical interface (NIC) into two logical interfaces, also referred to as called sub-interfacing.