CISCO CCNA RS (200-125) Certification Complete Course
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CISCO CCNA RS (200-125) Certification Complete Course

This is version 3 of CCNA Routing and Switching exam as is applicable since Aug 21, 2016
4.5 (127 ratings)
Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.
2,722 students enrolled
Last updated 10/2016
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  • 33.5 hours on-demand video
  • 9 Articles
  • 1 Supplemental Resource
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
What Will I Learn?
  • Understand and implement networking concepts and technologies. You will be able to configure, manage and troubleshoot CISCO routers and switches in the field.
View Curriculum
  • You should have access to real routers and switches but if thats not possible then GNS3 would suffice. Its free to download from GNS3 website. You can also use CISCO's "packettracer" as an alternate to practice this course labs.

(NOTE: This course has been updated to version-3 (200-125) of CCNA RS requirements). 

Learn the technologies and concepts of networking in this complete course and earn your CISCO certification.

Have an awesome career in Data Communication, large scale service providers or simply make yourself more knowledgeable.

Basics of Networking

How switches function

What does routing mean

Design your own networks and implement Routing Protocols

Secure your CISCO devices

CISCO is the leading Networking equipment provider with a large product portfolio ranging from small Enterprises to large Data Centers. CCNA (R&S) certification is one of the fundamental certifications that will help you in realizing the computer networking concepts and its implementations in real world.

This course has been designed for beginner level IT Engineers. It will take you through the physical installation of the CISCO devices to the very epitome of configuring them and make amazing network topologies. This course will ensure that you understand the dreaded concepts of subnetting and spanning tree protocols. You will observe actual packets as they move through the wires and make those “dots connect”. While configuring the devices you will feel as if you are doing it yourself, its that close and personal. By following this course you will not only be able achieve your CCNA (R&S) certification but it will pave the foundation for your CCIE certification as well.

Check out my Youtube channel for free preview of Cloud Computing topic.

Who is the target audience?
  • This course is meant for aspiring network engineers with little or nill knowledge of computer networking. And please if you are going for CCNA cert only, then this course is probably too long for you. Because my aim is to teach you and make you a better networking professional, CCNA will come as a by product.
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Curriculum For This Course
122 Lectures
Introduction to CCNA (R&S) course and what you will need to study and practice
1 Lecture 06:51

This is the introductory lecture of CCNA where students will be informed about the course contents, the books that will help them to achieve this certification and the tools / equipment they need to have to get the most out of this course.

Preview 06:51
Network Fundamentals
26 Lectures 07:59:17

A very important lecture to develop foundations of networking where I discuss framework of 2 x communication models.

TCP/IP Model and OSI Model

A brief look at the elements that are used in a network. Also a detailed discussion about data movement in TCP/IP layers. How email (or any information) is transfered from a browser to the actual wire.

Preview 12:33

Core concepts of TCP and UDP. Actual look at packets through Network Analyzer. How to read the output of analyzer.

TCP vs UDP, Some important Details and a look at actual packets

Core concepts of TCP and UDP. Actual look at packets through Network Analyzer. How to read the output of analyzer.

Some important TCP based Applications and their functionality, QoS basics

Fundamental understanding and concepts of TCP/IP Layer-2 and Layer-3. Very much essential for certification as well as for on job scenarios

Layer 2 Ethernet Frame, MAC Address and IPv4 Address

Learn about 5 x classes of IPv4 addresses. Also learn how routers look at an IP address

IPv4 Address Classes, How Routers differentiate between Networks and hosts, ARP

This lecture introduces some physical aspects of Ethernet networks such as what type of cabling is used, How an Ethernet card looks like and some detailed information about IEEE 802.3 development over the years.

Ethernet Card, Ethernet Cabling, IEEE 802.3 Standards

You will learn about the core concepts of collision and broadcast domains and the devices that interact with them e.g., switches, routers, hubs etc.

Collision Domain, Broadcast Domain, Devices that interact with these domains

In this lecture we will revise the IPv4 classes and will look at an example where we need to make many subnets out of one network.

IPv4 Review and Need for Subnetting

In this lecture I will show you how to make many networks out of one network, which we call as subnetting.

IPv4 Subnetting is Easy

We will together do some more examples of Subnetting so that you can understand the INs and Outs of this technique.

IPv4 Subnetting (Practice Examples)

A very important lecture that highlights the needs for VLSM and how to use it in our networks.

Variable Length Subnet Mask (VLSM), IP Classless

In this lecture we will learn about some basic fundamentals of routers and how they help us in joining our LANs with WANs

Basics of Routers, LAN, WAN Network, Routing Tables

You will learn about the interface of CISCO routers, its CLI and how to do basic level of configuration.

Configuring our First Router

This is the continuation of previous lecture where we do some more basic level configurations of CISCO routers including SSH.

Configuring our First Router (part-2)

We will see how IPv6 evolved, what are its benefits and a detailed look at IPv6 header.

IPv6 General Introduction

You will be able to write and identify IPv6 addresses and how to make subnets out of one IPv6 address.

IPv6 Address Format & Subnetting

We will learn what are Global Unicast addresses (Public) and how we can make our own Global Unicast Local address (Private). I will also tell you the concept of dual stacking to transform your IPv4 based network onto IPv6.

IPv6, Unique Addressing & Dual Stack

Let's configure IPv6 addresses on our CISCO routers and also see how to generate EUI-64 address.

Configuring IPv6

This is continuation from previous lecture where we do some more configuration related to IPv6 addresses and learn about some more IPv6 important classes, like link local addresses.

Configuring IPv6 (part-2)

Understand how IPv6 based hosts can learn their addresses automatically using different techniques which makes it alot easier for IT engineers to manage hosts

IPv6 Autoconfig Feature

Infrastructure Components: Access Point, Wireless Controller & Firewalls

Cloud Services: Virtualization Concepts

Cloud Services: Virtualization of Networking

Cloud Services: IaaS, SaaS, PaaS

Cloud Services: Traffic Paths and NFV
LAN Switching Technologies
22 Lectures 06:39:10

Learn and realize the different LAN equipments like repeaters, hubs bridges and switches

LAN typical devices, Basic understanding of Switches

Learn about CISCO switching techniques. You will also realize the concepts of CISCO campus design

3 x Methods of Frame Forwarding, Campus network design and Intro to VLAN

You will be able to distinguish between different media types available for Ethernet networks.

Copper / Optic Fiber based Ethernet cables and Auto Negotiation Features

Learn about physical appearance while you turn on the switch. Know about different LEDs status.

Powering up the Switch and connecting to it

Get yourself familiarized with CISCO Operating system or as it is known as IOS.

General overview of switch command line interface (CLI), Some basic commands

Learn about interfaces configuration, set passwords and look at MAC address table

Basics of Switch configuration

You will be able to configure switch with dynamic IP using DHCP. You will also learn about MAC address restrictions that you can implement on switch ports so that unauthorized access can be curtailed.

Configuration of DHCP server for Switch, Implement Port Security features

Understand the concepts of VLANs, why do we need them. Have a look at VLAN tagged frame and also discuss about Inter-VLAN routing.

Virtual LAN

We will together do some great VLANs configurations on CISCO switches.

Configuration of VLANs

You will be able to understand the idea of trunk links, why we need them and how you can configure them on CISCO switches.

Configurations of VLANs between switches

Configuring Inter VLAN communication

Understand the VLAN Trunking Protocol (VTP), Its needs in the network and how you can configure it on CISCO switches. Also learn about some miscellaneous CISCO commands.

VTP concepts and configuration

Be able to identify why we need STP in our networks. Then some detailed understanding of how STP works.

Understanding Spanning Tree Protocol (STP)

This lecture is a continuation from previous lecture where you will see the complete picture of STP working.

Understanding STP (part -2)

Learn about STP features such as Port Fast, BPDU Guard and EtherChannel (Bundling)

Understanding STP (part-3), Port Fast, BPDU Guard, Etherchannel

In this lecture you will learn about advanced version of RSTP and CISCO's version of STP known as PVST.


In this video, I'm gonna show you the initial working of STP on actual CISCO switches and how Root bridge, Root ports get elected.

Configuring STP on CISCO switches

In this lecture you will see how Designated ports are selected on actual CISCO switches.

Configuring STP on CISCO switches (part-2)

In this lab, you will learn how to influence to election of root bridges and some final thoughts.

Configuring STP on CISCO switches (part-3)

In previous lecture I skipped this topic, so here they are. You will learn about configuration of STP features such as Port Fast, LACP, BPDU Guard, PAgP and EtherChannel.

Configuring Port Fast, BPDU Guard, PAgP, LACP and Etherchannel

Switch Stacking

Chassis Aggregation
Routing Technologies
21 Lectures 06:37:32

We will discuss how a packet flows through the routers. You will also learn the concepts of Static Routing.

Packet Flow in Routers, Static Routing

In this video lecture, I'll show you how to configure static routes on CISCO routers.

Configuring Static Routes

You will learn how to configure static routing on CISCO routers and what benefit we get out of it.

Configuring Static Routing (part-2)

I will show you the functions of dynamic routing and what benefits do we achieve out of this.

Dynamic Routing - What & Why

Understand the concepts and working methodologies of OSPF protocol. One of the most widely used protocol around the world.

Dynamic Routing - OSPF

We dig deeper into OSPF components and how they interact with one and other. This lecture can easily be said as the core of OSPF routing.

Dynamic Routing - OSPF (part-2)

In this lecture we will learn about last important component of OSPF which is LSA types and then I'll present an overall picture of OSPF working.

Dynamic Routing - OSPF (part-3)

Learn about the configuration of OSPF v2 protocol on CISCO routers in multi-area topology.

Configuring OSPF

We continue to explore configuration of OSPF.

Configuring OSPF (part-2)

Continuing the configuration of OSPF and tying up some final knots.

Configuring OSPF (part-3)

Learn about the concepts and functionality of Routing protocol EIGRP.

Dynamic Routing - EIGRP

Continuation of EIGRP from previous lecture and discussion about Feasible Distance and Administrative distances. The core of EIGRP protocol.

Dynamic Routing - EIGRP (part-2)

Continuation from previous lecture. We will see some last important topics related to EIGRP such as Load balancing and loop avoidance.

Dynamic Routing - EIGRP (part-3)

Learn how to configure EIGRP on CISCO routers with multiple subnets.

Configuring EIGRP

Continuing from previous lecture. Some tuning of EIGRP using matrix variation and unequal cost path load balancing using variance.

Configuring EIGRP (part-2)

You will be able to understand the DHCPv6 working and after that we will configure OSPFv3 to do routing for IPv6 based networks.

DHCP for IPv6 and Configuration of OSPFv3 (IPv6)

Learn about implementation of EIGRP routing protocol in your IPv6 based network.

Configuring EIGRPv6

RIP Protocol: Some Quick Theory

RIP Protocol: Lab (part-1)

RIP Protocol: Lab (part-2)

SVI: Switch Virtual Interface
Wide Area Network (WAN)Technologies
20 Lectures 04:56:16

We will see some of the important WAN technologies that as a network engineer we interact with on daily basis.

WAN Technologies, General Overview

In this lecture we will discuss about some more WAN technologies including Frame Relay, MPLS etc.

WAN Technologies, General Overview (part-2)

You will learn about HDLC and PPP WAN protocols and how to configure them on CISCO routers.

Configuring HDLC & PPP

Broadband PPPoE: Theory + Lab (part-1)

Broadband PPPoE: Lab (part-2)

Learn about the core concepts of VPNs and also lets configure one VPN type on CISCO routers.

Virtual Private Network (VPN)

Dynamic Multipoint VPN (DMVPN)

MPLS Concepts: Why we need it ?

MPLS Concepts: Why we need it ? (part-2)

MPLS Concepts: Quick Lab

VPN Techniques using IPSec

QoS: Quality of Service - Introduction

QoS: Traffic types and Classification / Marking

QoS: Quick Lab

QoS: Congestion Management

QoS: Policing and Shaping

BGP Protocol: Concepts

BGP Protocol: Concepts (part-2)

BGP Protocol: Lab
Infrastructure Services
7 Lectures 02:20:10
DNS Operation and Troubleshooting

In this lecture we will discuss what is NAT, why we need it and its implementation techniques on CISCO routers.

Network Address Translation (NAT)

Learn about configuring NAT techniques like Static, Dynamic and Overload on CISCO routers.

Configuring NAT

Learn the concepts behind NTP and its configuration on CISCO routers.

Network Time Protocol (NTP)

In this lecture we will see how DHCP protocol works and how to implement it.

Dynamic Host Configuration Protocol (DHCP)

VRRP and GLBP have been removed from CCNA (200-125) v3 certification. So you can skip those topics and only concentrate on HSRP.

HSRP Concepts

Let's learn how we can configure HSRP.

Configuring HSRP
Infrastructure Security
10 Lectures 01:34:44
Configure, verify and troubleshoot Port Security

Common Access Layer Threat Mitigation Techniques

Learn about the concepts of ACL to control traffic flow through your network. We will also do some configuration in this lecture.

Access Control Lists (ACL)

Learn about protecting your network resources and control access to your routers.

Configuring Access Control Lists

IPv6: Access Control Lists & Lab

IPv6: ACL Gotcha and Lab

Verification of ACLs using APIC-EM Path Trace ACL Analysis tool

Learn how to configure SSH (Secure Shell) service on your switch to enable encrypted secure communication (as compared to telnet) between your terminal and switch so that no one can hijack your critical passwords (or information).

Configure secure access (SSH) for switch, Some important "Show" commands

Local Device Hardening

Device security using AAA with TACACS+ and RADIUS
Infrastructure Management
14 Lectures 03:11:04

Netflow has been removed from CCNA (200-125) so you can skip that portion.


CDP and LLDP: What, Why and How

Learn how to monitor your network through SNMP protocol.

Simple Network Management Protocol (SNMP)

Configuring SNMPv3

Local SPAN: Theory and Lab

IP SLA: Concepts and Lab

We will see how we can upgrade / downgrade IOS on CISCO routers.

Managing CISCO IOS

Managing IOS through Secure Copy (SCP) Protocol

Continuing from previous lecture where we see some more techniques about managing IOS and alos practice how to recover from CISCO forgotten password situation.

Managing CISCO IOS and Password Recovery

Learn how CISCO controls the IOS features and how you can get them activated.

Managing CISCO IOS Licensing

Verifying IOS using MD5

Network Programmability (SDN) : The 3 Planes

SDN : Controllers, NBI, SBI

Course Complete
1 Lecture 04:39

Congratulations! you have completed the course.

Ending Remarks
About the Instructor
Ahmad Nadeem
4.1 Average rating
676 Reviews
14,862 Students
6 Courses
Independent Network & Telecom Consultant

Mr. Ahmad Nadeem has a Bachelors in Telecom Engineering and a Masters in Engineering Management. He has been working in multiple roles focusing on different technologies in both private and public sector for over 14 years now. In his early years of professional life, he developed aptitude towards IP based networks and gradually that became as his core field. He likes to work on latest technologies including virtualization and cloud computing. He is also an ardent supporter of Opensource systems and likes to implement technology based on Opensource platforms. When he is not busy doing tech stuff, he likes to cook and just spend time with his family and friends.

Mehreen Kamran
4.2 Average rating
490 Reviews
13,477 Students
5 Courses