Articles

I’ll be creating articles focused on CCNA-required material, particularly tackling difficult topics for beginner network engineers. My goal is to explain these concepts in a simpler, more approachable way and make the articles convenient and enjoyable to read.

Introduction to STP

Learning Spanning Tree Protocol (STP) I found how important this concept is for layer 2 switching of the redundancy concept. Beginning network engineers should not overlook or misunderstand this fundamental topic, even though PVST+, RPVST+, or MSTP protocols are the only ones found on Cisco modern switches.

Explained OSI Model

The OSI (Open Systems Interconnection) model is a conceptual framework used to understand how different networking technologies interact and communicate with each other. It divides the networking process into seven distinct layers, each with specific functions and responsibilities.

Introduction to Cables

A couple of articles about networking wiring. I will attempt to describe the fundamental cable technology.

Cable Technology

Differences between Router and Switch

It may be difficult for someone who is new to networking to understand the differences between routers and switches. For more advanced users, it is natural and fundamental, but for beginners, it is not as simple.

Troubleshooting with Internet Control Message Protocol (ICMP)

Troubleshooting in networking refers to the process of identifying and resolving problems or issues that occur in a network. This involves identifying the root cause of the problem, isolating the affected area, and taking corrective action to restore normal network functionality.

Introduction to CIDR

CIDR (Classless Inter-Domain Routing) was the primary improvement implemented to address the limitations of classful addressing. Here's a breakdown of how the CIDR method works.

Introduction to VLANs

VLANs are logical segmentation of a network that allows for separate broadcast domains within the same physical network, increasing network performance and improving security.

DHCP Service

Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on Cisco routers to automatically assign IP addresses and other network configuration information to devices (clients) on a network

DHCP Snooping

DHCP snooping protection is the security feature that protects DHCP service from fraud in the network. Its purpose is to prevent malicious or unauthorised DHCP service, providing false IP addresses to network clients.

Dynamic ARP Inspection

Dynamic ARP Inspection (DAI) is a security feature on switches designed to prevent ARP spoofing or poisoning attacks.

Implementing DAI enhances network security by ensuring devices communicate with trusted peers, effectively mitigating ARP-based attacks.

Syslog - System Message Logging

Syslog enables switches and routers to have a log system to monitor, debug, and troubleshoot a network. This helps to detect any problem and prevent or correct any issues.

Network Time Protocol

NTP is a critical protocol for maintaining time synchronization across network devices. Without it, troubleshooting, security, and network automation can become unreliable. Every well-configured network should have a robust NTP setup to ensure accurate and secure timekeeping.