5.利用ping命令（-l参数）测试大型数据包传输情况

-l参数用于定义所发送缓冲区的数据包的大小，在默认的情况下，Windows的ping命令发送的数据包大小为32B，也可以自定义，但最大只能发送65500B。

例如：

            C:\WINDOWS>ping -l 32768 -n 10 192.168.1.188
            ping ing 192.168.1.188 with 32768 bytes of data:
            Request timed out.
            Reply from 192.168.1.188: bytes=32768 time=12ms TTL=64
            Reply from 192.168.1.188: bytes=32768 time=12ms TTL=64
            Reply from 192.168.1.188: bytes=32768 time=12ms TTL=64
            Reply from 192.168.1.188: bytes=32768 time=9ms TTL=64
            Reply from 192.168.1.188: bytes=32768 time=9ms TTL=64
            Reply from 192.168.1.188: bytes=32768 time=9ms TTL=64
            Reply from 192.168.1.188: bytes=32768 time=9ms TTL=64
            Reply from 192.168.1.188: bytes=32768 time=9ms TTL=64
            Reply from 192.168.1.188: bytes=32768 time=9ms TTL=64
            ping statistics for 192.168.1.188:
            Packets: Sent = 10，Received = 9，Lost = 1 (10% loss)，
            Approximate round trip times in milli-seconds:
            Minimum = 9ms，Maximum = 12ms，Average = 9ms

这是向IP地址为192.168.1.188的计算机发送10个大小为32768B的数据包，发送10个，返回9个，丢失1个。返回数据包的最短时间为9ms，最长时间为12ms。