1、下载ns（network simulation）安装包
到网站http://www.isi.edu/nsnam/ns/ns-build.html下载最新的ns-allinone套件，现在使用的是ns-allinone-2.34.tar.gz
2、配置系统环境
安装依赖包
＃yum install gcc-c++ ＃yum install libX11-devel ＃yum install xorg-x11-proto-devel ＃yum install libXt-devel ＃yum install libXmu-devel
3、安装ns-allinone-2.34.tar.gz
3.1、安装目录为：主文件夹”/home/jean"（用户名为jean）
#解压 sudo tar xvfz ns-allinone-2.34.tar.gz ＃进入tk8.4.18文件夹 cd ns-allinone-2.34/tk8.4.18/ #wget用ftp下载包 wget ftp://ftp.swin.edu.au/gentoo-portage...astevent.patch #重新安装 patch -p0 < tk-8.4-lastevent.patch #返回ns-allinone-2.34 cd ../ #设定CC为需要的gcc版本，和CXX为需要的g++版本（ns-allinone-2.34里面的C语言编译版本是4.0以下的） export CC=gcc34 CXX=g++34 #安装 ./install
最后出现：
IMPORTANT NOTICES:
(1) You MUST put /home/jean/ns-allinone-2.34/otcl-1.13, /home/jean/ns-allinone-2.34/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 <paths>
If you are using sh, you can set it like:
export LD_LIBRARY_PATH=<paths>
(2) You MUST put /home/jean/ns-allinone-2.34/tcl8.4.18/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-2.34; ./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
4、设置环境变量
#在/home/jean目录下，运行
sudo gedit .bashrc
#在第8行输入
PATH="$PATH:/home/jean/ns-allinone-2.34/bin:/home/jean/ns-allinone-2.34/tcl8.4.18/unix:/home/jean/ns-allinone-2.34/tk8.4.18/unix"
LD_LIBRARY_PATH="/home/jean/ns-allinone-2.34/otcl-1.13:/home/jean/ns-allinone-2.34/lib"
TCL_LIBRARY="$TCL_LIBRARY:/home/jean/ns-allinone-2.34/tcl8.4.18/library"
如图：
5、运行
打开新的终端：输入
ns
若出现%号，则安装成功
用一个例子试试：
ns ns-allinone-2.34/ns-2.34/tcl/ex/simple.tcl
出现如图所示：
