Wireshark Lab: Ethernet and ARP v7.0

0. 实验文件地址

Wireshark Lab: Ethernet and ARP v7.0数据字段(46~1500字节)：这个字段承载了IP数据报。以太网的最大传输单元(MTU)是1500字节。目的地址(6字节)：这个字段包含目的适配器的MAC地址。源地址(6字节)：这个字段包含了传输到该帧到局域网上的适配器的MAC地址。类型字段(2字节)：类型字段允许以太网复用多种网络层协议。CRC(4字节)：CRC(循环冗余检测)使得接收适配器的检测帧中是否引入了差错。前同步码(8字节)：以太网以一个8字节的前同步码字段开始(前同步码请自行百度)。

1. Capturing and analyzing Ethernet frames

Question & Answer

1. What is the 48-bit Ethernet address of your computer?

2. What is the 48-bit destination address in the Ethernet frame? Is this the Ethernet address of gaia.cs.umass.edu? (Hint: the answer is no). What device has this as its Ethernet address? [Note: this is an important question, and one that students sometimes get wrong. Re-read pages 468-469 in the text and make sure you understand the answer here.]