小编use*_*469的帖子

set ns [new Simulator]
#open nam file
set nf [open out.nam w]
$ns namtrace-all $nf
#set variables of topology
set lanNodes 5
set link("bandwidth") 5mb
set link("delay") 2ms
set link("queue") DropTail
#define two routers
set router0 [$ns node]
set router1 [$ns node]
#link two routers
$ns duplex-link $router0 $router1 2mb 2ms DropTail
#create and connect nodes with routers
for {set i 0}{$i < $lanNodes}{incr i} {
set n($i) [$ns node]
set n([expr $i+5]) [$ns node]
$ns duplex-link $n($i) $router0 $link("bandwidth") …