Comp 343/443-001 Week 4 notes

Introduction to the textbook
Programming assignments

Assignment 2   

    Chapter 7: exercises 2.0, 6.0 (packet travel times)
    Chapter 8: exercises 7.0, 8.0 (sliding windows)
    Chapter 9: exercises 6.0, 8.0 (IPv4)
    Chapter 13: exercises 2.0, 4.0 (routing)

Due Oct 11 (fall break Wednesday)

Assignment 1: Review Chapter 1  #5,7b, 9ef, 11, Chapter 2 #3

You don't want to be on Cloudflare's naughty list

43.0.0.0/8 for sale
It had been held by a research group, WIDE, and was sparsely allocated.
toonk.io/ipv4-sale-wide-and-apnic-selling-43-8/index.html

Pollution in 1.0.0.0/8 (2010 news)
labs.ripe.net/author/franz/pollution-in-18.

4.2.4: Access points

    linssid demo (linux utility; runs as root; needs display access)

Wi-Fi monitoring demo (maybe not; it breaks everything!)
    service NetworkManager stop
    ifconfig wlp0s20f3 down
    iwconfig wlp0s20f3 mode monitor
    ifconfig wlp0s20f3 up
    iwconfig wlp0s20f3 channel 12

To undo:
    ifconfig wlp0s20f3 down
    iwconfig wlp0s20f3 mode managed
    ifconfig wlp0s20f3 up
    service NetworkManager start

5.3 Token Ring

6: Links

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

    TDM and SONET

7. Packets, intronetworks.cs.luc.edu/current2/html/packets.html

8. Sliding windows, intronetworks.cs.luc.edu/current2/html/slidingwindows.html

Continue

    self-clocking
    lost packets
    cumulative ACK