Administrative Distance Explained: A Dallas Travel Story (CCNA by CCNAGuru)

๐Ÿค  The Dallas Adventure Administrative Distance (AD) CCNA by CCNAGuru ๐Ÿ“ Dallas ยท Ft. Worth ยท Online ๐ŸŽฅ a travel story that teaches networking ๐Ÿ“Œ CCNA certification Dallas โšก exam discount 2026 ๐ŸŒ† Picture this: You’re finally taking that dream trip to Dallas, Texas. You wanna experience the real deal โ€“ sizzling BBQ in Deep … Read more

Is CSMA/CD Still Used? Understanding Ethernet’s Collision Detection Legacy

Introduction: What is CSMA/CD? Carrier Sense Multiple Access with Collision Detection (CSMA/CD) is a network access method that was fundamental to early Ethernet networks. Its primary role was to orchestrate how devices shared a common communication medium (like a coaxial cable or a hub-based network segment) and to elegantly handle “collisions” โ€“ instances where multiple … Read more

Monitoring Traffic on a Cisco Router Interface

Monitoring traffic on a Cisco router interface is crucial for network administrators to ensure optimal performance, diagnose issues, and manage bandwidth effectively. This article provides an in-depth look at the commands used to check incoming and outgoing traffic on Cisco router interfaces. 1. Accessing the Router Before running any commands, you need to access the … Read more

Solution: Could not find an iourc file (IOU license), please configure an IOU license

Activate Cisco IOU License in GNS3 Introduction: GNS3 is a powerful network simulation tool used by networking professionals for testing and learning purposes. One of its features is the ability to run Cisco IOU (IOS on Unix) images for virtualizing Cisco routers and switches. However, to use Cisco IOU images legally, you need to activate … Read more

Cisco VLAN Trunks and EtherChannel Bundles Cheat Sheet

VTP Configuration Commands: Task Command Syntax Configure the VTP version vtp version {1 | 2 | 3} Configure the VTP domain name vtp domain domain-name Configure the VTP mode for a switch vtp mode { server | client | transparent | none} Configure a switch to become the primary VTP server vtp primary Switchport and … Read more

The Crucial Role of Networking Fundamentals in Cybersecurity Certifications

In the ever-evolving landscape of cybersecurity, the need for skilled professionals who can safeguard networks and data has never been greater. The journey to becoming a cybersecurity expert often begins with certifications, and while there are various paths to choose from, one common thread among them is the fundamental knowledge of networking and routing. In … Read more

Lab Equipment Packet Tracer 9.0

The Essential Equipment & Software List Ready to dive deep into the world of networking? Whether you’re setting up a home lab for Cisco studies, outfitting a classroom, or just curious about the building blocks of the internet, having the right gear is crucial. This guide breaks down the recommended baseline equipment and software to … Read more

Demystifying Inter-VLAN Routing with Layer 3 Switch SVI Interfaces: A Comprehensive Guide

Objective: To understand how to work with inter-VLAN routing using Layer 3 switch SVI (Switched Virtual Interface) interface. Steps to Configure Inter-VLAN Routing: 1. Configure VLANs: Start by creating the VLANs you want to use for inter-VLAN routing. Assign unique VLAN IDs and assign the required interfaces to their respective VLANs. 2. Enable IP routing: … Read more

Spanning Tree Path Cost: Optimizing Ethernet Network Efficiency

Spanning Tree Path Cost Spanning Tree Protocol (STP) is a network protocol that ensures loop-free topologies in Ethernet networks. One of the key elements in STP is the concept of path cost, which determines the best path for data forwarding in the network. Path cost is assigned to each network link based on its speed. … Read more

Understanding Administrative Distance in Cisco Routers: Importance and AD Values

Administrative Distance (AD) in Cisco Routers Definition The administrative distance (AD) is a numerical value assigned to different routing protocols in Cisco routers. It determines the preference or trustworthiness of routes when multiple routing protocols are present. Purpose The purpose of administrative distance is to select the best route among multiple available routes to reach … Read more