Comp 343/443-001 Week 4 notes

Reading:

Chapter 2 (not including Software Defined Networking)

Chapter 3: 3.1, 3.2, 3.3, 3.6, 3.7

3.7: Wi-Fi (3.7.1-3.7.4; maybe some 3.7.5-3.7.7)


Homework 2

    Chapter 5: exercises 2, 4 (packet travel times)
    Chapter 6: exercises 5, 6 (sliding windows)
    Chapter 7: exercises 6,7 (IPv4)
    Chapter 9: exercises 2,3 (routing)

Due: Wed, Oct 9 (just after fall break)


Start with Wi-Fi collision basics

3.7.4: Access points

    linssid

    3.7.6: security
    3.7.7: polling mode

    3.7.9: MANETs and mesh


Wi-Fi monitoring demo
    service NetworkManager stop
    ifconfig wlp3s0 down
    iwconfig wlp3s0 mode monitor
    iwconfig wlp3s0 channel 6
    ifconfig wlp3s0 up


4: Links
    Encoding and Framing
        NRZ, etc
        Manchester
        4B/5B
    4.1.5 Framing: how packets are defined

TDM and SONET

5: Packets
    Delay calculations
    Packet size revisited
        size and delay
        size and error recovery

    Checksums: Internet Checksum

    Error-Correcting codes (2D-parity)

Chapter 6:
    stop-and-wait