IT Certification


The Complete Networking Fundamentals Course. Your CCNA start

Learn about networking and start your journey to Cisco 200-301 Certification.

4.60 (25953 reviews)



80 hours


Dec 2020

Last Update
Regular Price

What you will learn

This course is for anyone who wants to attain the Cisco CCNA certification

This course will prepare you for the CCNA 200-301 certification exam

Describe network fundamentals and build simple LANs

Explain IP addressing and subnetting

Describe hubs, switches and routers

Explain the OSI and TCP/IP models

Explain how addresses are allocated using DHCP

Explain name resolution using DNS

Explain Access Control Lists (ACLs)

Explain Wi-Fi 6 and other Wi-Fi technologies

Explain how to protect networks from attacks such as Kali Linux hacks


Welcome to the Complete Network Fundamentals Course! In this course, you will learn the technologies that keep the world as you know today connected and running. We cover both the fundamentals of networking as well as the topics in the new Cisco CCNA 200-301 exam.

Networks are all around us and you are using one right now to access this course.

Imagine for a moment, how different your life would be without access to Facebook, Snapchat, Google, YouTube, Whatsapp or any of the other websites on the Internet? How would you live with no Internet?

The Internet is extremely important in modern life today and all websites and Internet communication relies on networking. This reliance is only predicted to continue with the growth of the Internet of Things (IoT) in the next few years.

Without routers, switches, network cabling and protocols like BGP there would be no Internet!

This course will teach you how networks actually work and how you are able to connect to websites like Facebook, Google, and YouTube.

Companies throughout the world (from the smallest to the largest) rely on networks designed, installed and maintained by networking engineers. Join this in demand industry!

Start your journey today learning about networking.

Content in this course can be used towards your CCNA. Topics such as IP addressing, subnetting and many others can be applied directly to passing your CCNA certification.

Access our online simulations so you can practice on simulated Cisco routers and switches. You will get to type commands such as enable, configure terminal, router ospf and many others and learn how to configure devices.

I want to welcome you to this Complete Networking Fundamentals course! I'm David Bombal, and I have been teaching networking  courses for over 15 years. I qualified as a Cisco Certified  Network Engineer (CCIE) in 2003 and hold with numerous other networking certifications. I'm also a Cisco and HPE  certified instructor where I have trained thousands of networking engineers in many of the largest  companies in the world including Fortune 100 companies.

I have designed this course for anyone wanting to learn more about networking and gain foundational knowledge, to help them embark on their networking career. The concepts taught in this course can be applied directly to multiple industry certifications including the Cisco Certified Network Associate (CCNA).

In this course, you will learn about topics such as IP addressing, IP subnetting, Routing, Switches, VLANs, Spanning Tree, Network Address Translation, Wireless and a whole lot more.

You will also learn more about the latest networking trends including OpenFlow and Software Defined Networking.

The course covers the following topics including (and this list will be constantly updated):

  • Network basics

  • Network architectures (OSI Model)

  • What are hubs, switches, routers?

  • How is data forwarded through a network?

  • IP addresses

  • IP subnetting

  • Cabling and network topologies

  • Ethernet basics

  • TCP and UDP

  • DNS and DHCP

  • Routing

  • VLANs

  • Cisco device initial configurations

  • ACLs

  • Network naming

  • IP Telephony

  • Quality of Service (QoS)

  • SDN

At the end of this course, you will be able to confidently discuss networking topics; and be able to start configuring real networking devices such as routers and switches. In this an introductory course, but contains a lot of information that can be directly applied to the CCNA certification.

The ideal student for this course is someone looking to break into the networking field, someone looking to extend their knowledge from PCs and servers to networking, or someone interested in getting knowledge to work in one of the most exciting, most in-demand jobs in IT - networking.

There are no requirements necessary to enroll in this course, I only ask that you come open minded and ready to learn.

Feel free to take a look at the course description and some of the sample free videos.

I look forward to seeing you on the inside!


The Complete Networking Fundamentals Course. Your CCNA start
The Complete Networking Fundamentals Course. Your CCNA start
The Complete Networking Fundamentals Course. Your CCNA start
The Complete Networking Fundamentals Course. Your CCNA start



CCNA 200-301 Exam: My Experience

Udemy tips and tricks

Download and Install Recommended Software

Packet Tracer: Windows Installation

Packet Tracer: macOS Installation

Basic Networking Terms

Terminology, NIC, Computer Network and Network Protocol

What is a Network Protocol

Home Network and SOHO network

Ping and Traceroute

What is an IP address

Network Categories and Components

Domain Name System (DNS)

IP Addressing and Network Sharing

Application types and network performance

Introduction to Computer Networks (ICND1)

Physical Components

Characteristics of a Network



Cost, Security and Availability

Scalability and Reliability

Physical versus logical topology

Network Diagrams

Application types and network performance

OSI Model

OSI Model - Introduction and Layers

OSI Model - Split of concentration

OSI Model - Application Layer, Presentation Layer and Session Layer

OSI Model - Top layers versus lower layers and Transport Layer

OSI Model Network Layer & Data Link Layer

OSI Model - Layer 1: Physical Layer

OSI Model - Host Communication

OSI Model - Encapsulation

OSI Model - TCP/IP versus OSI model

OSI Model - Demonstration using Wireshark



Binary Introduction

Binary versus Decimal


Covert IP Addresses to Binary

Convert Binary to Decimal



Hexadecimal - Demo of MAC addresses and ARP cache

Hexadecimal conversion theory and demos

Hexadecimal conversion theory and demos (continued)

Hexadecimal conversion theory and demos (continued)


IP Addressing

IP Addressing Overview and Demonstration

IP Characteristics and IPv4 Address Format

Network versus Host portion

IPv4 Address format (Street Analogy) and Address Classes

Class A and B addresses

Class C, D, E, A and B addresses

Special IPv4 Addresses and Directed Broadcast Address

Local Broadcast Address

Local Loopback Address

RFC1918 - Private Addresses

RFC1918 - Class A, B, C and IPv4 Link Local Addresses

Subnet Masks

Subnet mask demonstrations and Discontiguous Network Masks

CIDR Notation Part 1 and Part 2

CIDR Notation Part 3

Cisco IOS Software and Initial Device Configuration

Overview and Uses of Cisco IOS Software

Physical connection to the Cisco router

How to connect to a router/switch

Initial Startup

Configuration of the router and Modes - User

Modes - Enable/Privilege, User EXEC, Global Config

Modes - Interface

Modes - Line and Router mode



Commands (continuation) and Managing Cisco IOS Configuration

Copy Running Config Startup Config

Difference on the configuration

Erase startup config

TFTP Backup

Managing Cisco IOS Configuration

Storing files in Flash and Terminal Length


IP Subnetting

IP Subnetting Part 1

IP Subnetting Part 2

IP Subnetting Part 3

IP Subnetting Part 4

IP Subnetting Part 5

IP Subnetting Quiz 1

IP Subnetting-Sim 1

IP Subnetting-Sim 2

IP Subnetting-Sim 3

IP Subnetting-Sim 4

IP Subnetting-Sim 5

IP Subnetting-Sim 6

IP Subnetting-Sim 7

IP Subnetting-Sim 8

IP Subnetting-Sim 9

IP Subnetting-Sim 10

IP Subnetting-Sim 11

IPv4 Subnetting Cheat Sheet

PacketLife.net IPv4 Subnetting Cheat Sheet

Subnetting VLOGs - do you know the answers?

#050: CCNA IP addressing and subnetting: Are these hosts on the same subnet?

#051: CCNA IP addressing and subnetting: Can these hosts ping each other?

#053: CCNA IP addressing and subnetting: Can these hosts ping each other?

#079: IP Addressing and IP Subnetting for the CCNA Exam (Part 1). Practical IP S

#080: IP Addressing and IP Subnetting for the CCNA Exam (Part 2). Practical IP S

#081: IP Addressing and IP Subnetting for the CCNA Exam (Part 3). Practical IP S

#083: IP Addressing and IP Subnetting for the CCNA Exam (Part 4). Practical IP S

Cabling and Packet Flows

How does data flow in hubs, switches and routers?

Ethernet history

10base2, MAC addresses,

MAC Addresses, CSMA/CD and Collision domains

Broadcast domains, UTP & Cross Over Cables

Which cable should you use and Cable Categories

SFPs, DAC, Roll Over cable and How Devices Operate, Hubs

How does a Hub forward traffic?

What is a bridge?

How does a bridge forward traffic and what is a switch?

How do switches forward traffic?

What is half duplex and full duplex?

What is a router?

How does a router forward traffic?

How is traffic routed between subnets and routing between subnets

Does a router change the MAC address or IP address?

Summary or routing, MAC addresses and IP addresses


GNS3 Switching demos: Unicast, Broadcast, Multicast, MAC address tables (ICND1)

Dynamic MAC Learning

Unicast and Broadcast traffic: Wireshark

Multicast and Unknown Unicast traffic: Wireshark

Summary of traffic demos: Single switch

Two switches

BUM: Broadcast / Unknown Unicast / Multicast traffic

ARP Demo (ICND1)

ARP Demo Part 1

ARP Demo Part 2

ARP Demo Part 3

Physical Terminations Cheat Sheet

PacketLife.net Physical Terminations Cheat Sheet

GNS3 Hub, Switch, Wireshark (ICND1)

Ethernet Hub, switch and Wireshark captures

Password captures using GNS3 hub and Wireshark

Ethernet Switch and Wireshark captures of 802.1Q frames

Duplex and Speed Mismatch Demo (ICND1)

Duplex and Speed Mismatch Demo

Speed & Duplex Demo: Introduction

Speed & Duplex Demo: Late Collisions

Speed & Duplex Demo: Fix Issue between router and switch

Speed & Duplex Demo: Fix Other Switch Issues

Speed & Duplex Demo; PC and Switch

What is a loopback? (ICND1)

What is a loopback? Why is it used?

Another reason to use a loopback - OSPF


IP Connectionless and Overview


TCP Header and Applications

Port Number

TCP 3 Way Handshake

TCP Acknowledgement and Windowing

TCP Seq and Ack


DHCP Introduction and Cisco Router DHCP Client

DHCP Client options and Remove DHCP

DHCP Theory

DHCP Types

Using a Cisco IOS Network Device as a DHCP Server (GNS3) - (ICND1)

GNS3 DHCP Server Part 1

GNS3 DHCP Server Part 2

DHCP Server Simulation

DHCP Troubleshooting

CCNA VLOG #047 DHCP Troubleshooting Scenario 1 - Can you find the issue?

CCNA VLOG #055 DHCP Troubleshooting Scenario 2 - Can you find the issue?

CCNA VLOG #056 DHCP Troubleshooting Scenario 3 - Can you find the issue?

VLANs v1 (ICND1)

VLANs Part 1

VLANs Part 2

VLANS Cheat Sheet

PacketLife.net VLANs Cheat Sheet

VLANs and 802.1Q Demos (ICND1)

Demo Overview

Demo Part 2: Access Ports

Demo Part 3 - Trunking

Demo Part 4 - Wireshark

Demo Part 5 - Wireshark

Demo: InterVLAN Routing Part 1

InterVLAN Routing Part 2

GNS3 Campus 1: Overview (ICND1/ICND2)

GNS3 Topology Overview

IOSvL2 Appliance Import

GNS3 Campus 1: Basic Configuration

Switch Hostnames, VTP and VLANs Part 1

Hostnames, VTP, VLANs Part 2

IP addressing and ping testing

Dynamic Trunk Protocol - DTP

DTP Theory

DTP GNS3 Demo Part 1

DTP GNS3 Demo Part 2

DTP GNS3 Demo Part 3

GNS3 Campus 1: VLANS, trunks, access ports

Static trunk encapsulation and mode

Disable DTP and configure access ports

Ping within a VLAN

Which ports are trunking and which VLANs are permitted?

VLANs Simulations

VLAN Sim 1 (CC1.S1.6)

VLAN Sim 2 (CC1.S2.2)

VLAN Sim 3 (CC1.S1.7)

VLAN Sim 4 (SW1.1.2-1)

VLAN Sim 5 (SW1.1.2-2)

VLAN Sim 6 (CC2.S3.5)

VLAN Sim 7 (CC2.S3.6)

VLAN Sim 8 (CC2.S3.7)

Spanning Tree v2 (ICND1/ICND2)

Spanning Tree Overview

Versions of Spanning Tree

Why is Spanning Tree Required?

BPDUs and Bridge IDs

Demo: STP Root

Root Ports and Designated Ports

Extended Bridge ID and PortFast

Path Cost Part 1

Path Cost Part 2

PVST versus RPVST Port States

RPVST, PVST Interoperability and 802.1w and 802.1s Overview


Demo: 802.1w

802.1w Link Types

802.1w Proposals

802.1s / MSTP

Spanning Tree Comparison Summary

Spanning Tree Cheat Sheet

PacketLife.net Spanning Tree Cheat Sheet

BPDU Guard

BPDU Guard Part 1

BPDU Guard Part 2

BPDU Guard Part 3

Switching Sims

Switching 2 - sim 1

Switching 2 - sim 2

Switching 2 - sim 3

Switching 2 - sim 5

Switching 2 - sim 6

Switching 2 - sim 7

CDP Overview (ICND1)

CDP Introduction

CDP Demo

GNS3 Campus 1: CDP and LLDP

CDP Demo: Basic discovery

CDP Demo: Disable globally and per interface

CDP Demo: Command Options

LLDP Demo: Discover Linux Servers

CDP Sims

CDP- sim 1

Quiz 1: CDP-sim 2

Quiz 2: CDP-sim 3

Quiz 3: CDP-sim 4

Quiz 4: CDP-sim 5

GNS3 Cisco Etherswitch Service module (Layer 2 switching) (ICND1)

Cisco Etherswitch Service Module Overview

Create topology

Spanning Tree, PCMCIA setup, memory setup

Format Flash and set up VTP

Verify PC Connectivity

Spanning Tree testing

Move PCs to another VLAN

GNS3 Etherswitch Wizard

GNS3 Macros

GNS3 Campus 1: Spanning Tree optimization

Which ports are blocking

Spanning Tree blocks core switch ports

CDP & LLDP and STP - what happens

STP - optimize Core switches

GNS3 Campus 1: Link Aggregation / Etherchannel

Optimize campus network using Etherchannel

Etherchannel Simulations

Etherchannel Sim 1 (SW1.1.6-1)

Etherchannel Sim 2 (SW1.1.6-2)

Etherchannel Sim 3 (SW1.1.6-3)

Etherchannel Sim 4 (SW1.1.7-1)

GNS3 Campus 1: Spanning Tree testing

STP failover testing


CCNA VLOG #065: Routed ports, Switchports and SVIs - what and how?

CCNA VLOG #066: How to configure Layer 3 switching and interVLAN routing for the

CCNA VLOG #067: How to configure Layer 3 switching and interVLAN routing for the

CCNA VLOG #068: How to configure Layer 3 switching and interVLAN routing for the

CCNA VLOG #071: Using Ostinato to prove how broadcasts work for the CCNA Exam (P

CCNA VLOG #072: Using Ostinato to prove how broadcasts work for the CCNA Exam (P

Campus Network Troubleshooting ICND2

CCNA VLOG #042 Campus troubleshooting scenario 1: Can you find the issue?

CCNA VLOG #043 Campus troubleshooting scenario 2: Can you find the issue?

CCNA VLOG #045 Users cannot ping? Which layer of the OSI model broke?

CCNA VLOG #052 Campus troubleshooting scenario 3: Can you find the issue?

CCNA VLOG #060: LAN and WAN troubleshooting Scenario: Can you find the issue?

CCNA VLOG #069: MAC Address troubleshooting scenario 1: Can you find the issue?

Routing Introduction

Introduction to IP Routing and Routed vs. Routing Protocols

Routed protocols and Demonstrations

Static Routes and Dynamic Routes

Static vs. Dynamic Routing

How do routers determine the best route?

Terms: AS, IGPs, EGPs

Types of Routing Protocols -Distance Vector, Link State

EIGRP - advanced distance vector routing protocol and Administrative Distance

Additional AD values

How does a router route when told conflicting information?

Classful routing protocols

Auto summarization

Classless routing protocols

Administrative Distance versus mask length

Administrative Distance and multiple routes with the same mask

Link State Routing Protocols

OSPF Hierarchy - Multiple areas

Benefits of link state routing and Drawbacks of link state routing

Static Routing

Static Routing 1

Static Routing 2

Static Routing 3

Static Routing 4

Static Routing 5

Static Routing 6: Default Routes

Static Routing 7: Remove Static Routes

IP Default-gateway? (CCNA VLOG)

IP default gateway versus default route? (CCNA VLOG #004)

Static routing VLOGs (ICND1)

CCNA VLOG #076: Static and default IP routes for the CCNA Exam (Part 1)

CCNA VLOG #077: Static and default IP routes for the CCNA Exam (Part 2)

CCNA VLOG #078: Administrative Distance and Static routes for the CCNA Exam (Par

Router on a stick

Router on a stick overview and create topology

Router configuration and Wireshark capture of 802.1Q frames

Router on Stick Simulation

Layer 3 routing using SVIs (Switched Virtual Interfaces)

Routed Port - Turn a switch port into a routed port


VLSM - Part 1

VLSM - Part 2

Administrative Distance and Route lengths

Administrative Distance Part 1 (CCNA VLOG #014)

Administrative Distance Part 2 (CCNA VLOG #016)

Administrative Distance Part 3 (CCNA VLOG #017)

Administrative Distance Part 4 (CCNA VLOG #018)

GNS3 Campus 1: HSRP

HSRP Overview

Demo: HSRP Configuration: Switch 1

Demo: HSRP Configuration: Switch 2

Demo: Test connectivity to HSRP router

Demo: HSRP failover test

First Hop Redundancy Cheat Sheet

PacketLife.net First Hop Redundancy Protocol Cheat Sheet

Network Time Protocol (NTP)

NTP Overview and Demo: Issue on Network

Configure NTP

Points to remember

Port SPAN (Mirroring)

SPAN network overview & Test before SPAN

Configure SPAN and SPAN Ingress Options

SPAN Options and SPAN - Multiple Sessions

Real world network management (Optional ICND1)

Please note

Its not the NETWORK!

Netpath, NPM12 and GNS3 overview

Live demo of NetPath

Create a GNS3 network and integrate NPM (Optional ICND1)

How to Guide, Topology Overview, Windows 7 VM for NPM and Windows 2012 VHD

NPM Download, Access NPM software and Install and Inititial Login to NPM

Integration of NPM and GNS3, GNS3 VM and Build GNS3 Topology

Configure Routers, Configure Management network and Test IP connectivity

Import GNS3 network into NPM

Network Management Fundamentals

Applications covered in course

You need to know SNMP, OID and Performance Counters

Two main types of Network Protocols

Query Based Network Based Management

Event Based Network Management Protocols

What are the best practices?

Network Management Planning


Network Overhead

Impact of Network Topology

ACLs and Firewall rules

Network Management Protocols (ICND1)

Network Management Protocols


Demo Wireshark, NPM and GNS3

Demo: Wireshark, NPM and GNS3 Part 2

Demo: Wireshark, NPM and ICMP

Demo; Wireshark and SNMP

MIBs OIDs and Performance Counters (ICND1)

Overview and RFCs

Demo MIB Browser

Demo MIB Browser

Performance Counters



Demo: Logging levels

Demo: Telnet (monitor) and logging

Demo: Logging levels, monitor, Stop logging to console and Logging Buffer

Demo: Kwi Syslog Server

Demo: Syslog levels, facilities and GNS3 setup with Syslog server

Demo: GNS3 and Syslog

Demo: Timestamps, dates and other options

Managing Cisco Devices (ICND1)

Cisco Router Components


Demo: Router components

Demo: Router Components

Configuration Register

Boot Field and software, Router Boot Process - POST and load of IOS

Boot process and Demo: Bootup without startup config

Image Boot Theory, Boot System Command and Boot Process Theory - Startup Config

IOS Images

Demo: IOS Systems

IOS Naming Conventions

Backup IOS to TFTP Server

Upgrade IOS Theory, Download IOS from Cisco and Demo: Upgrade IOS

Password Recovery

Demo: Password Recovery

Infrastructure Security (ICND1)

Enable and Secret Passwords 1

Enable and Secret Passwords 2

Disable Services

Disable CDP

Line console security

Telnet security

Sessions and lines


Banners - Introduction and MOTD

Login and Exec Banners

Password Sim 1 (CC1.S1.2)

Troubleshoot Telnet Issues

Telnet troubleshooting (CCNA VLOG #006)

Hacking Networks with Kali Linux

IMPORTANT - please read

Hacking Cisco Networks Part 1

Hacking DTP and VTP and VLAN hopping

Hacking DHCP: Rogue DHCP server and DHCP exhaustion

ARP poisoning and man-in-the-middle attack

Kali Linux Wi-Fi

DHCP Snooping and Dynamic ARP Inspection

DHCP Snooping

Dynamic ARP Inspection

Port Security

Port Security and security mechanisms

Port Security Demo Part 1

Port Security Demo Part 2

Port Security Demo: Sticky, Error disable and auto recovery

Port Security Sim 1 (CC1.S2.4)

Port Security Sim 2 (CC1.S2.5)


802.1X Overview

Issues with Local Authentication

RADIUS and TACACS overview

AAA Demo Part 1: Configuration

AAA Demo Part 2 ACS Config and Testing

AAA Demo Part 3: AAA Groups with IOSv

Switch Stacking

Switch Stacking Part 1

Switch Stacking Part 2

Switch Stacking Part 3


Access Control Lists (ACLs) introduction

ACL demonstrations, wildcard masks

ACL demonstrations

Extended ACL demonstrations

Access List Cheat Sheet

PacketLife.net Access List Cheat Sheet

Network Address Translation (NAT)

NAT Part 1: Overview

NAT Part 2: RFC1918 and NAT Terms

NAT Part 3:Private Addresses and NAT Types

NAT Part 4: Demo: Static NAT

NAT Part 5: Wireshark Captures

NAT Part 6: Show commands, Static NAT : GNS3 Server NAT

NAT Part 7: Dynamic NAT Overview, GNS3 Static and Dynamic NAT Demo

NAT Part 8: Dynamic NAT Configuration and Show Commands

NAT Part 9: NAT Overloading / PAT

NAT Part 10: PAT demo and Show commands

NAT Part 11 : Source Address Theory

NAT Part 12: NAT and PAT Theory

NAT Part 13 : PAT Demo

NAT Troubleshooting and VLOGs ICND1

CCNA VLOG #032: Static NAT Part 1

CCNA VLOG #033: Static NAT Part 2

CCNA VLOG #034: NAT Single IP Multiple Servers

CCNA VLOG #035: NAT Troubleshooting 1 - Can you find the issue? CCNA Exam 200-12

CCNA VLOG #036: NAT Troubleshooting 2 - Can you find the issue? CCNA Exam 200-12

CCNA VLOG #038: NAT Troubleshooting 3 - Can you find the issue? CCNA Exam 200-12

CCNA VLOG #040: NAT Troubleshooting 4 - Can you find the issue? CCNA Exam 200-12

CCNA VLOG #046 NAT Troubleshooting Scenario 5 - Can you find the issue? CCNA Exa

NAT Cheat Sheet

PacketLife.net NAT Cheat Sheet

NAT Sims

NAT Sim 1

NAT Sim 2

NAT Sim 3

NAT Sim 4

Quality of Service (QOS)

Quality of Service Overview

QOS - types of delay, packet loss

What is QOS? What are IP Telephony requirements?

Methods to implement QOS - DiffServ, IntServ, Best Effort

Quality of Service Cheat Sheet

PaketLife.net QoS Cheat Sheet

IP Phone Startup Process

IP Phone Startup - Power requirements

Demonstration of Cisco IP Telephony configuartion

Demonstration: Voice VLAN Configuration

How does an IP Phone get an IP address and register with a CUCM?

IP Telephony Setup

Demonstration: Dial peer configuration

Demonstration: VoIP dial peers

Demonstration: Voice VLAN Configuration

IP Telephony service setup

Demonstration: Call debugging

Incoming dial-peers

Dial-peer selection

GNS3 Campus 1: EIGRP and redistribution (ICND2)

EIGRP configuration

EIGRP Configuration (continued)

Redistribute Static Route and Troubleshoot GNS3 cloud issue

GNS3 Campus 1: NAT and Internet access (ICND1/ICND2)

Configure NAT and test


OSPF Part 1

OSPF Part 2

OSPF Part 3

OSPF Part 4

OSPF Part 5

OSPF Part 6

OSPF Part 7


DR Election Process (CCNA VLOG #039)

OSPF DR Elections (CCNA VLOG #041)

OSPF Troubleshooting

OSPF Troubleshooting (CCNA VLOG #001)

OSPF Troubleshooting (CCNA VLOG #003)

OSPF Troubleshooting (CCNA VLOG #005)

OSPF Troubleshooting (CCNA VLOG #037)

OSPF Multi-Area configuration and testing

CCNA VLOG #073: OSPF Multi-area configuration and testing for the CCNA Exam 1

CCNA VLOG #074: OSPF Multi-area configuration and testing for the CCNA Exam 2

CCNA VLOG #075: OSPF Multi-area configuration and testing for the CCNA Exam 3

CCNA VLOG #082: OSPF Multi-area configuration and troubleshooting for the CCNA E

OSPF Cheat Sheet

PacketLife.net OSPF Cheat Sheet

Cisco IGP Cheat Sheet

PacketLife.net Interior Gateway Protocols Cheat Sheet

OSPF 1 Sims

OSPF 1 - sim 1

OSPF 1 - sim 2

OSPF 1 - sim 3

OSPF 1 - sim 4

OSPF 1 - sim 5

OSPF 2 Sims

OSPF 2 Sim 1




OSPF 2 Sim 5



OSPF 2 Sim 8

OSPF 2 Sim 9

OSPF 2 Sim 10


IPv6 Part 1

IPv6 Part 2

IPv6 Part 3

IPv6 Part 4

IPv6 Part 5

IPv6 Sims

IPv6 - sim 1

IPv6 - sim 2

IPv6 Addressing, routing and troubleshooting

CCNA VLOG #048: IPv6 static routing using next hop IPv6 address (IPv6 routing 1)

CCNA VLOG #049: IPv6 static routing using next hop IPv6 address (IPv6 routing 2)

CCNA VLOG #062: Troubleshooting IPv6 networks for the CCNA exam (Part 1)

CCNA VLOG #063: Troubleshooting IPv6 networks for the CCNA exam (Part 2).

CCNA VLOG #064: Troubleshooting IPv6 networks for the CCNA exam (Part 3).

IPv6 Cheat Sheet

PacketLife.net IPv6 Cheat Sheet

Implementing IPv6 addressing on Hosts and Routers (ICND1)

IPv6 addressing and SLAAC Part 1

IPv6 addressing and SLAAC Part 2

IPv6 addressing and SLAAC Part 3

IPv6 addressing and SLAAC Demo 1

IPv6 addressing and SLAAC Demo 2

IPv6 addressing and SLAAC Demo 3

IPv6 addressing and SLAAC Demo 4

IPv6 DHCP Server, Relay Agent and Client Part 1

IPv6 DHCP Server, Relay Agent and Client Part 2

Wireless Networks (Wi-Fi)

Wi-Fi Intro

What are these new terms?

Wi-Fi 6 demonstration

Wide Area Networks (Point-to-point)

WAN introduction

WAN Overview

WAN Point-to-point link


VPNs versus leased lines


Serial interfaces (WAN Interface Cards)

Serial Interfaces (continued)

Serial interface speeds

WAN Sims

WAN Sim 1

WAN Sim 2

WAN Sim 3

WAN Sim 4

WAN - sim 5

DCE DTE - physical routers (ICND1)

Home lab options

DCE DTE Demo Part 1

DCE DTE Demo Part 2


HDLC Introduction

HDLC Demo Part 1

HDLC Demo Part 2

IPv6 Routing - OSPF

OSPFv3 Overview

OSPFv3 configuration and show commands: R1

OSPFv3 configuration and show commands: R2

OSPFv3 full network configuration and testing

OSPFv3 Troubleshooting

OSPF IPv6 no ip addresses (CCNA VLOG #044)

IPv6 Access Lists ICND2

IPv6 ACLs Part 1

IPv6 ACLs Part 2

IPv6 ACLs Part 3

IPv6 ACLs Part 4

IPv6 ACLs Demo 1

IPv6 ACLs Demo 2


VPNs Part 1

VPNs Part 2

VPNs Part 3

VPNs Part 4

GRE Tunnels

GRE Tunnels and Tunnel Demo Overview

RFCs. Protocol Types and Lab Part 1

GNS3 GRE Lab Part 2: GRE Tunnel Configuration

GNS3 GRE Lab Part 3: EIGRP

GNS3 GRE Lab Part 4: Wireshark captures and show commands

GNS3 GRE Lab Part 5: GRE and OSPF

VPN Config Generator

VPN Config Generator

GRE: Site to Site Tunnel

IPSec: Static Site to Site VPN

IPSec Cheat Sheet

PacketLife.net IPSec Cheat Sheet

Cloud Computing

Cloud Computing Part 1: Overview

Cloud Computing Part 2: Hypervisors

Cloud Computing Part 3: Hypervisors

Cloud Computing Part 4: Amazon Demonstration


Introduction to SDN and OpenFlow

Welcome: SDN Course Welcome (ICND2)

What is SDN? (ICND2)

What do the inventors say it is

Open SDN, SDN via overlays, White box SDN

SDN via APIs, Cisco ACI (ASICs), OpenStack, NFV

Optional: Is this actually real? (Optional)

Real World SDN -Google

Real Word- Microsoft

Real World SDN - NSA

Real World SDN - Facebook

Linux on switches

Which SDN Controller should you use?

Old Cisco 200-125 CCNA Exam Content. Ignore if you are studying for new CCNA.

IMPORTANT - please read

EIGRP: Cisco 200-125 CCNA Exam Content. Ignore if you are studying for new CCNA.

EIGRP - Part 1

EIGRP - Part 2

EIGRP - Part 3

EIGRP - Part 4

EIGRP - Part 5

EIGRP - Part 6

EIGRP - Part 7

EIGRP - Part 8

EIGRP - Part 9

EIGRP - Part 10

EIGRP - Part 11

EIGRP Troubleshooting: Cisco 200-125 CCNA Exam Content.

EIGRP Neighbor Troubleshooting Part 1 (CCNA VLOG #021)

EIGRP Neighbor Troubleshooting Part 2 (CCNA VLOG #022)

EIGRP Neighbor Troubleshooting Part 3 - DUAL Algorithm (CCNA VLOG #023)

EIGRP Neighbor Troubleshooting Part 4 Retransmission retry limit exceeded (CCNA

EIGRP GNS3 Labs: Cisco 200-125 CCNA Exam Content.



EIGRP Cheat Sheet: Cisco 200-125 CCNA Exam Content.

PacketLife.net EIGRP Cheat Sheet

EIGRP 1 Sims: Cisco 200-125 CCNA Exam Content.

EIGRP 1 - sim 1

EIGRP 1 - sim 2

EIGRP 1 - sim 3

EIGRP 1 - sim 4

EIGRP 2 Sims: Cisco 200-125 CCNA Exam Content.

EIGRP 2 - Sim 1

EIGRP 2 - sim 1 Quiz

IPv6 Routing - EIGRP (ICND2): Cisco 200-125 CCNA Exam Content.

EIGRP for IPv6 Introduction

EIGRP for IPv6 Configuration

EIGRP for IPv6 Troubleshooting

IOS Licensing (ICND1)

Licensing Overview

IOS Feature Sets

License Types

License File


VTP Overview

VTP Overview Part 2

VTP Modes

VTP Versions

VTP on real 3750 switch

VTP - Demo: Erase switch config and VTP Pruning

VTP Defaults and VTP Warnings!

VTP Demo: Overview & Switch 1 config

VTP Demo: Autonegotiation S2

VTP Demo: VTP Client

VTP Demo: Client overrides server

VTP Network Meltdown! VLANs removed from database!

VTP Demo: Network Back Again, Transparent Mode and Physical switches auto lear

VTP Simulations

VTP Sim 1 (SW1.1.1-1)

VTP Sim 2 (SW1.1.1-2)

VTP Sim 3 (SW1.1.1-3)

VTP Sim 4 (CC1.S1.4)

VTP Sim 5 (CC1.S1.3)

CCNA VLOGs: VTP Troubleshooting (ICND2)

CCNA #028: VTP troubleshooting

CCNA #029: VTP and DTP Troubleshooting

CCNA #030: VTP Troubleshooting


BGP Overview and the CCNA

BGP Looking Glass

GNS3 BGP Part 1

GNS3 BGP Part 2

GNS3 BGP Part 3

GNS3 BGP Part 4

GNS3 BGP Part 5

GNS3 BGP Part 6

GNS3 BGP Part 7

GNS3 BGP Part 8

GNS3 BGP Part 9

GNS3 BGP Part 10

BGP Troubleshooting (CCNA VLOGS)

BGP Configuration and Verification (CCNA VLOG #007)

BGP Troubleshooting Part 1 (CCNA VLOG #008)

BGP Troubleshooting Part 2 (CCNA VLOG #009)

BGP Troubleshooting Part 3 (CCNA VLOG #011)

BGP Cheat Sheet

PacketLife.net BGP Cheat Sheet


PPP Overview

PPP Protocols

PPP Phases

PAP Theory


Hashing Software




PPP Demo: Basic configuration

PPP Demo: PAP Authentication

PPP Demo: PAP Authentication Failure

PPP Demo: CHAP Authentication

PPP Demo: CHAP Authentication Failure

PPP Cheat Sheet

PacketLife.net PPP Cheat Sheet


MPLS Introduction & L3VPNs

MPLS Terms and definitions


MPLS Traffic Engineering

MPLS Labels

MPLS Demo Overview

Core MPLS Configuration

MPLS Core Verification with Wireshark captures

MPLS Core Verification (Part 2)

MPLS Traceroute (MPLS Verification)

Hide the core MPLS network from customers

Virtual Routing and Forwarding Instances (VRFs)

VRF Testing - the same IP address on multiple router interfaces

MPLS VPNV4 and OSPF Configuration


PE2 Configuration

Redistribution and testing

Testing and verification

MPLS PPT - Thanks Richard!

APIC-EM (Path Trace and ACL Trace) - ICND2

APIC-EM Theory

APIC-EM Theory (NBI and SBI)

Demo: Cisco APIC-EM - Path Trace basics

Demo: APIC-EM - ACL Trace - Troubleshoot ACLs

Demo: APIC-EM with older devices and GNS3 (Optional)

Thank you!

Thank you for attending. Your feedback is welcome!


Manish9 October 2020

I was able to get full idea about networking and able to understand topics in the training. Packet tracer labs make it even more interesting. Overall a good course. I find the Wifi 6 explanation could have been better. Thank you for the course.

Sanjay9 October 2020

Simple and nice way of expressing the knowledge. Making the theoretical quite interesting and giving more emphasis on basics.

Louise6 October 2020

I have pretty much 0 knowledge about CCNA and yet still able to understand. The class is awesome! Definitely worth the money!

Ryan29 September 2020

I'm literally taking this instead of my college course on the same subject, this is way better and provides the hands on experience I need to learn!

Giacomo23 September 2020

So far so good. Teaching style is mostly clear and concise as well as quality insight and understanding. I look forward to finishing the course.

Kurtis22 February 2020

Wonderful job so far of covering the basics. As a person who already has a bit of experience due to working in the right environment, I really appreciate how well things are being covered.

Gabriele21 February 2020

Very good course so far: clear explainations from the instructor, very useful the drawings during the presentation. Useful also the tests at the end of some chapters

Ben21 February 2020

Yes - so far it is making Networking concepts clearer to me than when I was using a text book and working with a Network Switch in the past few weeks.

Akram20 February 2020

Love to learn , because first have to learn then we can remove "L" alphabet from learn. It became Earn ?

Doug19 February 2020

A very thorough coverage of essential foundational networking knowledge I was looking for. This is not a how to pass a test course, but presents very bedrock information needed to understand more advanced networking topics and practices. If you have a notion about networking and are looking for a fast track to pass the test look elsewhere. If you are interested in really learning about the how and whys of networking this course is for you. I am using this as a companion to print texts and Cisco publications about the CCNA certification to ensure complete knowledge. Fantastic bargain and David is all about the facts, obviously a very knowledgeable teacher and the content is in a logical order.

Euston17 February 2020

I'm learning so much in the first couple of videos. Looking forward to learning all I can about CCNA within this course.

Mirza15 February 2020

It’s very easy to understand I like it just make time if someone interested but I like it very pretty

David14 February 2020

I have finally found an instructor who could teach me how to convert binary, to decimal, to hex, forward and backward. It's so refreshing to know how to do that now!

Brad13 February 2020

This was an amazing course! Not only did I learn everything I needed from the videos and files, but I got certified with the knowledge I learn. Thank you David!

Nancy11 February 2020

I love this guy!!!!! The straight forward explanation for newbies like me is such a blessing! Thanks.


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