CCNA IP Domain-Lookup When we type a domain name into a router or switch's CLI, it tries to resolve that name to an IP address so it can initiate the connection. By default, DNS lookup is enabled, so if we type a command that the device doesn't understand, it
CCNA Default Gateway of Last Resort Let's explore the concept of the default gateway of last resort and how to configure it on Cisco routers. The default gateway of last resort is a route that a router uses when no specific route exists for a destination network in its routing table. It's
CCENT (ICND1) Interface Status Interface Status There are several different statuses that interfaces can be in. The most common are: * Up/Up - This means the interface is functioning normally. Both the physical layer (layer 1) and the data link layer (layer 2) are operational. * Up/Down - This indicates that the physical connection
CCENT (ICND1) Configuring an IP address on a Cisco Device Configure a static IP address on an interface To configure a static IP address on an interface, you need to enter interface configuration mode and then use the ip address command to assign the IP address and subnet mask. Here's how to do it: Router> enable Router#
CCENT (ICND1) The difference between Run and Start and how to save! In this post I am going to explain the difference between the running and startup configuration files that are stored on Cisco devices. I will show you how to view both of these configuration files and how to save changes from the running to the startup configuration file (or vice
CCENT (ICND1) Banner - Message Of The Day (MOTD) Setting up a Banner or Message of the Day (MOTD) Setting up a banner or Message of the Day (MOTD) on your Cisco devices is an important security and administrative practice. A banner provides information to users connecting to your device, whether they're legitimate administrators or unauthorized individuals
CCNA Using the Pipe '|' command When working with the Cisco command line interface (CLI), it is very common to see long outputs. When looking at items like the running configuration or the routing table, you will often find that the output spans many pages. This makes it difficult to read and find the information you
CCNA The "do" command Objective To understand the do command and its functionality within Cisco IOS. Topology We will only be using one router for this tutorial. R1 The Problem It's annoying having to exit from config mode to exec mode every time you want to run a show command. Or from
CCNA Configuring VTY Access Introduction VTY (Virtual Teletype) lines are virtual interfaces on Cisco devices that allow remote access via Telnet or SSH. Configuring VTY access is essential for remote device management, making it one of the fundamental skills every network administrator must master. Understanding VTY Lines Cisco devices typically have multiple VTY lines
CCENT (ICND1) Navigating a Cisco device User Mode The first privilege mode you enter when you successfully access a Cisco device is the user mode. This mode allows you to execute a limited set of commands, mostly monitoring and troubleshooting commands. The prompt for user mode is: Router> Privileged Mode (Enable Mode) To access more
