Project 01: Traceroute

Guide

Networking Background

Protocols - Building Blocks.

Internet的layers:

• Layer 1: Physical

• Layer 2: Link

• Layer 3: Internet (Network of Networks)，包括End Hosts, Routers，一条message需要经过多次hop才能到达目标，一个route必须forward这条message以接近final destination.

  The Internet only offers best-effort service

• Layer 4: Transport，添加了额外的特性以保证可靠的传递

• Layer 7: Application,

Setup and Debug

下载完zip文件之后，

$ sudo python3 traceroute.py cmu.edu

Project 1A: Basic Traceroute