1.查询本机的以太网地址。

2.查询子网上任何机器的以太网址。

3.查询以太网址对应的IP地址。(未测试)

4.监听子网上流过的以太网包。　　

5.发送ARP报文。

6.建立TCP连接，发送接收TCP报文。-1. Check the machine' s Ethernet address. 2. Check the Ethernet subnet at any machine. 3. Check the corresponding IP address Ethernet address. (Not tested) 4. Subnet monitor flow through the Ethernet packet. 5. Send ARP packets. 6. To establish TCP connection, send and receive TCP packets.