Prof Soumya Kanti Ghosh & Prof Sandip Chakraborty

Summary

This course on computer networks and internet protocols, led by Soumya Ghosh and Sandeep Chakravathy from IIT Kharagpur, aims to provide a comprehensive understanding of networking fundamentals. It covers the five layers of the TCP/IP protocol stack, from the physical layer to application-level data, and explores practical applications like socket programming. Advanced topics, including software-defined networking, will also be introduced, alongside demos of network switches and routers. This course promises to equip engineers and scientists with essential knowledge for navigating the complexities of modern networking.

Takeaways

• 🌐 Networking is essential in today's world, serving not just as a requirement but as a necessity for executing various tasks.
• 👩‍🏫 The course is co-led by Soumya Ghosh and Sandeep Chakravarthy, who will explore various aspects of computer networks and internet protocols.
• 📚 The course will cover the five layers of the TCP/IP protocol stack, starting from the application layer to the physical layer.
• 🔗 Participants will learn about different types of network applications at the application layer.
• 🚀 The transport layer will be explored, focusing on TCP and UDP protocols.
• 🌍 IPv4 addressing and routing will be discussed in detail at the internet layer.
• 🔌 The course will include practical aspects, such as socket programming for creating end-to-end network applications.
• 💻 Advanced topics will be introduced, including Software Defined Networking (SDN) and its applications.
• 📈 Demos will showcase the evolution of network switches and routers, highlighting configuration techniques for data transmission.
• 🎓 The course aims to motivate learners to explore current research aspects in computer networks and practical setups for end-to-end networking.

Q & A

What is the main purpose of this course on computer networks?

The main purpose of the course is to provide engineers and scientists with a thorough understanding of the fundamentals of computer networking and internet protocols, emphasizing both theoretical knowledge and practical applications.

Why is networking considered a necessity in today's world?

Networking is considered a necessity because many essential functions and applications in various fields rely heavily on network connectivity, making it crucial for effective communication and data exchange.

Who are the instructors of the course?

The instructors of the course are Soumya Ghosh and Sandeep Chakravarthy from the Computer Science Department at IIT Kharagpur.

What are the five layers of the TCP/IP protocol stack covered in the course?

The five layers of the TCP/IP protocol stack covered in the course are the Application Layer, Transport Layer, Internet Layer, Data Link Layer, and Physical Layer.

What topics will be discussed at the Application Layer?

At the Application Layer, the course will discuss different types of network applications that operate on top of the networking protocols.

What protocols will be examined in the Transport Layer?

The course will examine TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) in the Transport Layer.

What is the significance of the Internet Layer in networking?

The Internet Layer is significant because it deals with IPv4 addressing schemes and routing, which are essential for enabling communication between different networks.

How will practical applications be integrated into the course?

Practical applications will be integrated through hands-on sessions on socket programming, where students will learn to write end-to-end network applications, as well as demonstrations of networking hardware like routers and switches.

What advanced topics will be touched upon in the course?

The course will briefly touch on advanced topics such as software-defined networking (SDN) and current research trends in computer networks.

What can students expect to learn from this course?

Students can expect to gain foundational knowledge of the TCP/IP protocol stack, practical skills in developing network applications, and insights into cutting-edge networking topics and research.

Outlines

00:00

😀 Introduction to Computer Networks and Internet Protocols

In this introductory section, Soumya Ghosh welcomes participants to a course on computer networks and internet protocols. He emphasizes the omnipresence and necessity of networks in today's world, especially for engineers and scientists. The course aims to provide a foundational understanding of networking and internet protocols, covering various aspects such as the TCP/IP protocol stack. Sandeep Chakravathy joins him to outline the course structure, starting from the physical layer and progressing through the application layer, transport layer (TCP and UDP), internet layer (IPv4 addressing), and data link layer. They highlight practical applications like socket programming and advanced topics such as software-defined networking, showcasing the evolution of network switches and routers. The course aims to motivate learners to explore research areas in networking and to understand how to set up an end-to-end network from a practical perspective.

Keywords

💡Computer Networks

Computer networks are systems that connect computers and devices to share resources and information. In the context of the video, the instructors emphasize the omnipresence of networks in modern society, highlighting their role as a foundational element in the functioning of various applications and services. For instance, the course aims to equip engineers and scientists with the knowledge needed to navigate and utilize these networks effectively.

💡Internet Protocols

Internet protocols are standardized rules that govern the transmission of data across networks. They are crucial for ensuring that devices can communicate with one another. In the video, the instructors plan to cover various protocols within the TCP/IP stack, underscoring the importance of understanding these protocols for successful networking applications.

💡TCP/IP Protocol Stack

The TCP/IP protocol stack is a set of communication protocols used for the internet and similar networks, structured in layers. Each layer has specific responsibilities, facilitating seamless data exchange. The video outlines the five layers of this stack—application, transport, internet, data link, and physical—demonstrating their interconnectedness and the role each plays in networking.

💡Application Layer

The application layer is the topmost layer of the TCP/IP model, where end-user applications interact with the network. It encompasses various network applications such as web browsers and email clients. In the video, the instructors introduce this layer first, indicating its significance in understanding how users directly engage with network services.

💡Transport Layer

The transport layer is responsible for the reliable transmission of data between devices, ensuring error correction and data integrity. It includes protocols like TCP (Transmission Control Protocol) and UDP (User Datagram Protocol). The video mentions this layer as a critical component in the TCP/IP stack, highlighting its functions in managing data flow during communication sessions.

💡IPv4 Addressing

IPv4 addressing refers to the method of assigning a unique identifier to each device on a network, using a 32-bit address format. This addressing scheme is essential for routing data across the internet. The video notes that understanding IPv4 is key for students, as it lays the groundwork for learning about data transmission and routing.

💡Routing

Routing is the process of determining the best path for data packets to travel from the source to the destination across a network. It is a fundamental aspect of how data is managed within the internet. The instructors discuss routing in the context of the internet layer, emphasizing its importance in ensuring efficient communication between devices.

💡Data Link Layer

The data link layer is responsible for node-to-node data transfer and error detection in a local area network (LAN). It ensures that data packets are successfully transmitted to the next hop in the network. The video briefly touches on this layer, positioning it as a critical step in the overall data transmission process.

💡Physical Layer

The physical layer encompasses the hardware components of a network, including cables, switches, and other devices that facilitate the actual transmission of data signals. This layer deals with the physical characteristics of the network medium. In the video, the instructors mention the physical layer as foundational, setting the stage for understanding how data moves through the network.

💡Software Defined Networking (SDN)

Software Defined Networking (SDN) is an approach to networking that allows for the management of network services through abstraction of lower-level functionality. This enables dynamic configuration and management of network resources. The instructors introduce SDN as an advanced topic, showing its relevance in modern networking practices and encouraging students to explore its implications for future research and development.

Highlights

Introduction to the necessity of computer networks in today's world.

Emphasis on the importance for engineers and scientists to understand networking basics.

Overview of the course structure focusing on networking and internet protocols.

Discussion of the five layers of the TCP/IP protocol stack.

Detailed exploration starting from the physical layer to application layer.

Introduction to network applications at the application layer.

Overview of the transport layer, focusing on TCP and UDP protocols.

Examination of the internet layer and the IPv4 addressing scheme.

Explanation of routing processes performed at the IP layer.

Basics of the data link layer and the physical layer.

Practical aspects of socket programming for creating end-to-end network applications.

Introduction to advanced topics like software-defined networking (SDN).

Demos showcasing the evolution of network switches and routers.

Configuration of routers for effective data transmission.

Discussion of building an end-to-end network in software-defined networking architecture.

Encouragement to explore research aspects in current networking.

Invitation to engage in practical perspectives on networking.

Conclusion highlighting the hope for an enjoyable learning experience.

Transcripts

Hai, welcome to this course on computer networks and internet protocols.

As we see in today’s world this network is omnipresent right, it is not only nowadays

a requirement sometimes it is a necessity or it is going to be a necessity without network

there are several things we may not be able to execute.

So it is important for us specially engineers and scientist who are working in the field

of networking to understand that basic background of this.

How this overall networking, inter networking protocol works.

So that exactly this what this course is going to deliver and I Soumya Ghosh along with my

colleague Sandeep chakravarthy will be jointly taking this thing and we will looking at different

aspects of this networking and with looking at some of the practical uses so how things

works I request Sandeep to give few more overview of the things on the course.

So, hello everyone.

I am Sandeep Chakravathy from Computer Science Department at IIT Kharagpur.

So together with Professor Soumya Ghosh we will be taking the course on computer network

and internet protocols.

So in this course broadly we will talk about the different aspects of computer networks

starting from the physical layer where you will be getting the signal and then getting

the sequence of bits and from there.

How will you ultimately get the final application level data in between the entire process we

will go into little detail so we will cover broadly the 5 layers of the TCP IP protocol

stack and start with the application layer, the different type of network applications

which are there and then we will go to the transport layer of the protocol stack where

we will look into broadly the TCP and UTP protocol.

Then we will look into the internet layer, the ipv4 addressing scheme and then how outing

is performed at the IP layer followed by the basics of data link layer and the physical

layer and in this course as well we will be covering into few practical aspects like how

can you do the socket programming to write an end to end network application with different

type of interesting properties and along with that.

We will briefly touch on some advance topic which are the cutting edge topics in computer

networks like this software define networking concept and we will also show certain demos

of few how the network switches and network router that got evolved over time and how

you can configure a router to make it workable such that you can transmit data from one end

to another end and along with that.

Whenever you are building up this entire routing protocol stack at the software level which

we call as the software define networking in that particular networking architecture

how can you build up an entire end to end network and then start transmitting the data.

So in brief we will cover many of the basics aspects of computer networks and various internet

protocols.

And then we will go to certain advance topics which we will motivate you to learn about

what are different research aspects people are exploring now a day and how you can also

set up a end to end network from a practical perspective.

So hope you will be enjoying this course thank you.

Thank you.