CSE473S: Introduction to Computer Networks (Spring 2022)

Course Description:
This course provides a broad overview of computer networking. Topics include Internet: core and edge, history, application layer protocols, Hyper Text Transfer Protocol (HTTP), File Transfer Protocol (FTP), Simple Mail Transfer Protocol (SMTP), Domain Name System (DNS), peer-to-peer (P2P), transport layer design issues, transport layer protocols, Transmission Control Protocol (TCP), User Datagram Protocol (UDP), TCP congestion control, network layer, Internet Protocol version 4 (IPv4), Internet Control Message Protocol (ICMP), Internet Protocol version 6 (IPv6), routing algorithms, routing protocols, Open Shortest Path First (OSPF), Routing Information Protocol (RIP), Border Gateway Protocol (BGP), datalink layer and local area networks carrier sense multiple access with collision detection (CSMA/CD), Ethernet, virtual local area networks (VLANs), Point-to-Point Protocol (PPP), Multi-Protocol Label Switching (MPLS), wireless and mobile networks, code division multiple access (CDMA), IEEE 802.11 (WiFi), multimedia networking, security in computer networks, and cryptography.

Prerequisite: CSE 131 (Computer Science I) or permission of the instructor (Note: CSE 241 as indicated in the course catalog is not required.)

Textbook: J. F. Kurose and K. W. Ross, "Computer Networks: A Top-Down Approach," 8th Edition, Pearson, 2021, ISBN: 9780136681557

Instructor: Prof. Raj Jain, jain@wustl.edu, Office: McKelvey 2038, Office Hours: By appointment

Location: The class meets Mondays and Wednesdays from 1:00 PM to 2:20 PM.

Teaching Assistants Office Hours: TBD

The class has been flipped and so you need to watch the video before the class. The class time is used to answer questions logged on the question form. All Q&A sessions will be held via zoom. See Canvas for the Zoom link.
See modules below in the tentative schedule for links to videos.

All question about the homeworks and exams grading should be directed to TAs.

Audio/Video recordings of lectures from the previous offering of this course are available online: Spring 2021, Spring 2020, Spring 2019, Fall 2016, Fall 2011, Fall 2010, Fall 2009, Fall 2005.

Tentative Schedule (Subject to Change)
ClassDayDateQ&A TopicChapter
1Wednesday1/19/2022Course Overview
2Monday1/24/2022Computer Networks and the Internet (Part 1)1
3Wednesday1/26/2022Computer Networks and the Internet (Part 2)1
4Monday1/31/2022Application Layer (Part 1): HTTP2
5Wednesday2/2/2022Application Layer (Part 2): SMTP, DNS, P2P2
6Monday2/7/2022Transport Layer (Part 1): Design Issues3
7Wednesday2/9/2022Transport Layer (Part 2): UDP, Flow Control3
8Monday2/14/2022Transport Layer (Part 3): TCP, TCP Congestion Control3
The Network Layer: Data Plane (Part 1: Network Layer Basics)4
9Wednesday2/16/2022Exam 1 Review1-3
10Monday2/21/2022Exam 11-3
11Wednesday2/23/2022Network Layer Data Plane (Part 2: IP Datagram, NAT, UPNP, DHCP)4
12Monday2/28/2022Network Layer Data Plane (Part 3: SDN)4
The Network Layer: Control Plane (Part 1: Dijkstra's, Bellman-Ford Algorithms)5
13Wednesday3/2/2022The Network Layer: Control Plane (Part 2: OSPF and BGP )5
14Monday3/7/2022The Network Layer: Control Plane (Part 3: SDN Controller + ICMP + SNMP )5
15Wednesday3/9/2022The Link Layer and LANs (Part 1): Functions6
Monday3/14/2022Spring Break - No class
Wednesday3/16/2022Spring Break - No class
16Monday3/21/2022The Link Layer and LANs (Part 2): CRC6
17Wednesday3/23/2022The Link Layer and LANs (Part 3): Multiple Access, Ethernet, VLANs, MPLS, Data Centers6
18Monday3/28/2022Exam 2 Review4-6
19Wednesday3/30/2022Exam 24-6
20Monday4/4/2022Wireless and Mobile Networks (Part 1): Wireless Characteristics, LANs and PANs7
21Wednesday4/6/2022Wireless and Mobile Networks (Part 2): Mobility Management7
22Monday4/11/2022Security in Computer Networks (Part 1): Cryptography 8
23Wednesday4/13/2022Security in Computer Networks (Part 2)8
24Monday4/18/2022Security in Computer Networks (Part 3)8
25Wednesday4/20/2022Security in Computer Networks (Part 4)8
26Monday4/25/2022Exam 3 Review7-8
27Wednesday4/27/2022Exam 37-8

Exams (Best 2 of 3)60%(30% Each)
Class participation05%
Video Reviews10%

Complete List of Audio and Video Recording of Lectures by Raj Jain
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