主要是NS2的学习过程中相应代码进行了编写，包括对NS2中自带的ping协议进行了修改，使其直接存放在NS的目录下，并在更改协议名字的条件下，可以正常运行，经过调试，最后通过，出现nam；包括对例子程序进行了更改以便成功调试和同时对其进行了注释；包括吞吐量的分析的文件。-NS2 in the learning process is mainly the corresponding code has been written, including the native NS2 ping protocol was modified to directly stored in the NS directory, and change the agreement in the name of the condition, can be normal operation, after debugging, and finally passed, there nam　including examples of a change process in order to successfully debug and comment were carried out simultaneously　including the throughput of the file.