centos下安装NS2

在进行网络实验时，经常需要进仿真实验，这里给大家提供一款非常强大的仿真工具：NS2。NS2是在UNIX系统上面开发的，因此UNIX系统和类UNIX系统是最佳平台（当然windows系统也能安装使用）。这里我们主要介绍在类UNIX系统中的安装（以centos为例）。NS2主要有两种安装，一种是纯手动安装，需要依次安装所有依赖包，对于手残党和新手党来说无疑是个噩梦，所以为了造福各位小伙伴们，当然就介绍最懒得安装方式啦：通过allinone包安装

1.安装gcc和g++（注意yum源的g++跟debain的apt-get源的不同）

yum install gcc yum install gcc-c++

2.安装依赖

yum install libX11-devel* yum install xorg-x11-proto-devel* yum install libXt-devel* yum install libXmu-devel*

3、下载ns-allinone-2.35.tar.gz

wget http://sourceforge.net/projects/nsnam/files/allinone/ns-allinone-2.34/ns-allinone-2.34.tar.gz/download tar -xzf ns-allinone-2.34.tar.gz

4.安装NS2

cd ns-allinone-2.34/ #进入ns2源码目录 ./install #一步操作，但是需要耐心等待

如果安装成功，那么将会出现下面的信息 Ns-allinone package has been installed successfully. Here are the installation places: tcl8.5.10: /home/ivan/Downloads/ns-allinone-2.35/{bin,include,lib} tk8.5.10: /home/ivan/Downloads/ns-allinone-2.35/{bin,include,lib} otcl: /home/ivan/Downloads/ns-allinone-2.35/otcl-1.14 tclcl: /home/ivan/Downloads/ns-allinone-2.35/tclcl-1.20 ns: /home/ivan/Downloads/ns-allinone-2.35/ns-2.35/ns nam: /home/ivan/Downloads/ns-allinone-2.35/nam-1.15/nam xgraph: /home/ivan/Downloads/ns-allinone-2.35/xgraph-12.2 gt-itm: /home/ivan/Downloads/ns-allinone-2.35/itm, edriver, sgb2alt, sgb2ns, sgb2comns, sgb2hierns

当然这并没有完成，你会发现除了上面这些信息外，还有其他信息：

Please put /home/ivan/Downloads/ns-allinone-2.35/bin:/home/ivan/Downloads/ns-allinone-2.35/tcl8.5.10/unix:/home/ivan/Downloads/ns-allinone-2.35/tk8.5.10/unix into your PATH environment; so that you’ll be able to run itm/tclsh/wish/xgraph.

IMPORTANT NOTICES:

(1) You MUST put /home/ivan/Downloads/ns-allinone-2.35/otcl-1.14, /home/ivan/Downloads/ns-allinone-2.35/lib, into your LD_LIBRARY_PATH environment variable. If it complains about X libraries, add path to your X libraries into LD_LIBRARY_PATH. If you are using csh, you can set it like: setenv LD_LIBRARY_PATH If you are using sh, you can set it like: export LD_LIBRARY_PATH=

(2) You MUST put /home/ivan/Downloads/ns-allinone-2.35/tcl8.5.10/library into your TCL_LIBRARY environmental variable. Otherwise ns/nam will complain during startup.

After these steps, you can now run the ns validation suite with cd ns-2.35; ./validate

For trouble shooting, please first read ns problems page http://www.isi.edu/nsnam/ns/ns-problems.html. Also search the ns mailing list archive for related posts.

5、注意这些提示信息，网上很多教程都说，将上面提及的几个环境变量加入到/home/username/.bashrc文件中，这样做确实也没一点问题。可问题是如果你是系统管理，搭好的环境要给研究所或全公司所有的同事使用的话，将上述三个环境变量添加到/etc/profile文件中不失为一种很简便省事的方法。

6、切换到ns-allinone-2.35/ns-2.35/tcl/ex目录下，然后执行：

ns simple.tcl