2022 Internet Infrastructure

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Academic unit or major
Graduate major in Computer Science
Ohta Masataka 
Class Format
Media-enhanced courses
Day/Period(Room No.)
Tue1-2()  Fri1-2()  
Course number
Academic year
Offered quarter
Syllabus updated
Lecture notes updated
Language used
Access Index

Course description and aims

To explain that the Internet is not a specific application such as web but an information/communication infrastructure and the end to end argument, the fundamental architectural principle of the Internet, with specific protocols at physical, datalink and network layers. It is expected that participants can design network protocols with the end to end argument in mind.

Student learning outcomes

To understand what is protocol. To understand the end to end argument, the principle of the Internet and be able to explain it with specific examples. To be able to identify some protocol violating the end to end argument and its harmful consequences.

Course taught by instructors with work experience

Applicable How instructors' work experience benefits the course
As a side job, acted as a technical advisor of Softbank, a CTO of Mobile Internet Services Inc. etc. to construct and operate the Internet. Acted as an editor/author of rfc1995 etc., involved in developing various internet protocol standards in IETF. Ecomonic background of Internet technologies are often explained.


End to end argument, Internet, Architecture, Layering, Catenet Model

Competencies that will be developed

Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

Class flow

Lecture on each topic with questions and comments from the participants. The participants are required to ask a question or make a comment on the lecture at least twice during a term of the course.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Introduction of class To understand what is and what is not the Internet and what is layering
Class 2 Introduction to the Internet architecture superficially know the end to end argument and CATENET model
Class 3 Physical Layer understand various physical layer technologies
Class 4 Datalink layer understand various datalink layer technologies
Class 5 IPv4 understand IPv4 and ARP
Class 6 IPv6 Understand IPv6 and ND
Class 7 IPsec understand IPsec and various security technologies
Class 8 NAT&DHCP understand NAT and DHCP and know what is end to end NAT
Class 9 Routing (IGP/EGP) Understand routing protocols w.r.t. difference between IGP and EGP and various IGP/EGP technologies
Class 10 Routing (ROLC/MPLS) understand background and various technologies of ROLC/MPLS
Class 11 Multicast Understand various multicast technologies and their difficulties
Class 12 QoS (Quality of Service) Guarantee understand difficulties and solutions of QoS (bandwidth/delay) guarantee in packet network
Class 13 Optical packet router understand how realistic optical packet router with practical buffering can be constructed
Class 14 auxiliary topics auxiliary topics

Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.



Reference books, course materials, etc.


Assessment criteria and methods

Interim report to experience how internet protocols work (20%) and final report to assess understanding on the Internet and the end to end argument (80%).
In addition, good questions and comments during lecture are rewarded with additional scores.

Related courses

  • CSC.T442 : Internet Applications

Prerequisites (i.e., required knowledge, skills, courses, etc.)


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