The Network Simulator ns-2: Topology Generation_network topology simulator-优快云博客

本文链接：https://blog.youkuaiyun.com/com_stu_zhang/article/details/5541534

本文介绍了在NS-2网络模拟器中创建拓扑的几种方法，包括Inet、GT-ITM、Tiers和其他拓扑生成器。详细讲解了如何将这些生成器的输出转换为ns-2可读的格式，以及手动创建简单拓扑的步骤。

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The Network Simulator ns-2: Topology Generation

Topology generation is required for network simulations. In NS-2 you may create a topology for simulation using one of the following methods:

by using the Inet topology generator.
by using the GT-ITM topology generator.
by using the Tiers topology generator.
by using the other topology generators.
by hand

Inet Topology Generator

Generating graphs from Inet topology generator
Conversion of Inet output to ns-2 format
Use inet2ns to convert the inet topology to ns.

#!/usr/bin/perl
# Program to convert a inet topology to ns format
# Usage: inet2ns < inet.topo > ns.topo 
# Usage in ns : source ns.topo  in your tcl script and then
# call the procedure to create the topology using 
# create-topology linkbw [scaling factor for delay]  
# Assumptions: Eucliedian distance between the nodes is in miles.
# Hence propogation delay = distance / speed of light (186 x 10^3 miles/sec) 


#Read first line for number of nodes and links
chomp($line = <STDIN>);
($nodes, $links) = split(' ',$line);

print "proc create-topology { linkBW {sf 1} } {/n";
print "/tglobal ns/n";
print "/n/t#Create $nodes nodes in the topology/n";
print "/tfor {set i 0} {/$i < $nodes} {incr i} {/n";
print "/t/tset n(/$i) [/$ns node]/n";
print "/t}/n/n/n";
print "/t#Create $links edges in the topology/n";


#Skip all the location information
for ($i=0; $i<$nodes;$i++){
        $line = <STDIN>;