1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
puts "sourcing tcl/lan/vlan.tcl..."
source ../lan/vlan.tcl
set opt(tr) out
set opt(namtr) "vlantest-hier.nam"
set opt(seed) 0
set opt(stop) .5
set opt(node) 3
set opt(qsize) 100
set opt(bw) 20Mb
set opt(delay) 1ms
set opt(ll) LL
set opt(ifq) Queue/DropTail
set opt(mac) Mac/Csma/Cd
set opt(chan) Channel
set opt(tcp) TCP/Reno
set opt(sink) TCPSink
set opt(app) FTP
proc finish {} {
global ns opt
$ns flush-trace
exec nam $opt(namtr) &
exit 0
}
proc create-trace {} {
global ns opt
if [file exists $opt(tr)] {
catch "exec rm -f $opt(tr) $opt(tr)-bw [glob $opt(tr).*]"
}
set trfd [open $opt(tr) w]
$ns trace-all $trfd
if {$opt(namtr) != ""} {
$ns namtrace-all [open $opt(namtr) w]
}
return $trfd
}
proc create-topology {} {
global ns opt
global lan node source node0 nodex
$ns set-address-format hierarchical
set num $opt(node)
AddrParams set domain_num_ 1
lappend cluster_num 3
AddrParams set cluster_num_ $cluster_num
lappend eilastlevel [expr $num + 1] 1 1
AddrParams set nodes_num_ $eilastlevel
for {set i 0} {$i < $num} {incr i} {
set node($i) [$ns node 0.0.[expr $i + 1]]
lappend nodelist $node($i)
}
set lan [$ns newLan $nodelist $opt(bw) \
$opt(delay) -llType $opt(ll) -ifqType $opt(ifq) \
-macType $opt(mac) -chanType $opt(chan) -address "0.0.0"]
$lan cost 2
set node0 [$ns node "0.1.0"]
$ns duplex-link $node0 $node(1) 20Mb 2ms DropTail
$ns duplex-link-op $node0 $node(1) orient right
set nodex [$ns node "0.2.0"]
$ns duplex-link $nodex $node(2) 20Mb 2ms DropTail
$ns duplex-link-op $nodex $node(2) orient left
}
## MAIN ##
set ns [new Simulator]
set trfd [create-trace]
create-topology
set tcp0 [$ns create-connection TCP/Reno $node0 TCPSink $nodex 0]
$tcp0 set window_ 15
set ftp0 [$tcp0 attach-app FTP]
#set udp0 [new Agent/UDP]
#$ns attach-agent $node0 $udp0
#set cbr0 [new Application/Traffic/CBR]
#$cbr0 attach-agent $udp0
#set rcvr0 [new Agent/Null]
#$ns attach-agent $nodex $rcvr0
#$udp0 set dst_ [$rcvr0 set addr_]
$ns at 0.0 "$ftp0 start"
#$ns at 0.0 "$cbr0 start"
$ns at $opt(stop) "finish"
$ns run
|
