Learn Computer Networking

The What and How of Computer Networks

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  • Lectures 50
  • Video 12 Hours
  • Skill Level All Levels
  • Languages English
  • Includes Lifetime access
    30 day money back guarantee!
    Available on iOS and Android
    Certificate of Completion

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Course Description

I have friends who know nothing about computer networks who own stacks of off-the-shelf routers, hundreds of feet of cable, and every wireless card you could imagine.  And yet, they've failed to figure out that their internet connection will never get any faster if they don't buy service faster than the 768k down DSL.

Not to be arrogant about what I know about networking, but a network is much more than the jack in the wall you plug the cable into.  But for most people, the end-user, this is what the network is reduced to.  For the rest of us we want to know what makes this stuff work. What are the Computer Networking Basics, What are the components, what are the technologies, protocols, and rules of building reliable and resilient networks?

This Computer Networking Tutorial is built off of three other successful courses and contains monthly updates and live sessions that explore the technologies of computer networks.  You will be provided with lab topologies that you can build into Dynamips or GNS3 network emulation freeware.  Each lecture will walk-thru advanced technology demonstrations illustrating the proper implementation of the technology.  

What am I going to get from this course?

  • Over 50 lectures and 12 hours of content!

What you get with this course?

Not for you? No problem.
30 day money back guarantee.

Forever yours.
Lifetime access.

Learn on the go.
Desktop, iOS and Android.

Get rewarded.
Certificate of completion.


Section 1: Introduction
1 page
Welcome to the course!
Section 2: What Is The Network?
The Network
1 page
All materials referenced in The Network lecture can be found here.
Section 3: What Is The Network Engineer?

This lecture describes the role of the network engineer.  It describes the different responsibilities of the job role and expected compensation given level of experience and education.  It also describes how to gain free hands on experience to gain skillsets needed to be a successful network engineer.

1 page
All materials referenced in The Network Engineer lecture can be found here.
Section 4: What Are The Skills?

In this lecture we describe the Knowledge Matrix and how to use it to map out study planning.

Knowledge Matrix
107.0 kB
Section 5: CCNA Beginner Labs
2 pages
This lab will introduce the user to the method for accessing a Cisco IOS router and provide introductory guidance in navigating the command line interface.
2 pages
In this lab we will configure CDP to see how the protocol functions and what it takes for Cisco devices to be discovered
2 pages
This lab provides instruction on setting a banner in the Cisco IOS and describes the differences between the MOTD, Login, Exec, and Incoming Banner. You will also see how you can create dynamic notifications within your banner messages.
1 page
Solution Guide for the Setting a Cisco Router Banner Lab
Section 6: Critical Mass

In this lecture, we introduce you to GNS3 and Dynamips.  We show you how you can use the free program to learn most, if not all, of the skills to become a competent network engineer.

Demonstration GNS3 Lab Topology
593.9 kB

This lecture quickly reviews the configuration and benefits of Cisco Discovery Protocol.


This lecture shows you how to quickly navigate the command line interface.


This lecture describes and demonstrates how to create VLANs on Cisco Catalyst Switches.


This lecture introduces VLAN technology.


This lecture introduces VTP and how to use it to better manage VLAN creation in your switched networks.

Simulation: VLAN Trunking Protocol Configuration

This lecture describes the dual VLAN configuration used when an interface has a Voice VLAN assigned.


Spanning Tree Protocol creates redundant forwarding paths through your switched networks.  This lecture describes the protocol, and how it is used to create efficient layer 2 networks.


This lecture details the protocol enhancements provided by RSTP.


MST allows for the grouping of VLANs into single instances of RSTP.  This provides less administrative overhead that is accompanied by RPVST+.


There are limitations with STP and this lecture show some proprietary solution to work around the inherent protocol nuances.


EtherChannel aggregates the bandwidth of redundant interfaces.  This lecture describes there operation and demonstrates how to configure them.


UDLD provides loop protection in you network by identifying when an interconnect has become unidirectional.


Protected switchports provide a security mechanism for interfaces in the same VLAN and prevents the connected end-hosts from communicating with eachother.


This lecture describes how you can limit the number of MAC addresses learned on a particular interface.


In the event that an interface has gone to err-disabled state, a recovery mechanism is available to automatically recover the interface without administrative intervention.


This lecture describes storm control functionality and its configuration.


This lecture describes the security mechanism available in Cisco Catalyst switches that mitigates against rouge DHCP servers.


This lecture describes IP Source Guard and its configuration.


SPAN allows for the mirroring of switchports for the purpose of capturing network packets.


Frame Relay is a legacy WAN technology that is still widely used in corporate networks today.


IPv4 is the de facto transport protocol on the internet today.  Even though next generation protocol IPv6 is available, IPv4 will be around for decades to come.  Learn IPv4 addressing, subnetting and assignment in this lecture.

Basic walkthrough of the subnetting process.

This lecture shows you how to emulate PC network functionality in GNS3 topologies.


This lecture demonstrates how to integrate Vyatta routing platforms into your GNS3 topologies.


This lecture demonstrates how to integrate Quagga routing processes into your GNS3 topologies.


Memory in Cisco IOS devices is meant for very specific roles in the operating system.  This lecture reviews each type of memory and how it is used.


This lecture is a demonstration of GNS3 functionality.


This lecture introduces the concept of routing and how it is configured on routing platforms.


RIPv2 is a dynamic routing protocol that is used to dynamically exchange routes in small networks.

RIPv2 GNS3 Topology
11.1 kB
Configure OSPF

Here are a few tips on where to find your IOS config file and how quickly parse through it to find the information that you need quickly and efficiently.


What is IPv6?  What do CCNA candidates need to know about IPv6?  This short lecture discusses the need for IPv6 and some of the benefits of the new internet transport protocol.


This short lecture introduces you to the IPv6 address hexadecimal format and shortcut to make the addresses more readable.


Introduction to Unicast, Multicast, and Anycast address types in IPv6.


This is a Flash lab simulation. For best performance, use on a Flash capable device in full-screen mode.

Instructor Biography

Brent Leekley, Learning & Development (L&D)

Brent Leekley is the owner of multiple technical and business websites, worked as computer network expert, and ran his family's brick-and mortar furniture store in Colorado, USA.

As a Cisco Certified Internetwork Expert, market researcher running print, web, and broadcast campaigns, and business owner Brent has developed numerous low-to-no cost life/business hacks that save time, money and frustration.

Brent's courses focus on finding the quickest way to attain skills that make immediate impact on your projects and habits.

Brent lives with his family in Castle Rock, Colorado, USA.

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