errormodel-example.tcl

ns2 wireless仿真 tcl脚本实例 很有参考价值

# ======================================================================
# Main Program
# ======================================================================

# Initialize Global Variables
#-------------------------------------------
set val(chan)           Channel/WirelessChannel    ;# channel type
set val(prop)           Propagation/TwoRayGround   ;# radio-propagation model
set val(netif)          Phy/WirelessPhy            ;# network interface type
set val(mac)            Mac/802_11                 ;# MAC type
set val(ifq)            Queue/DropTail/PriQueue    ;# interface queue type
set val(ll)             LL                         ;# link layer type
set val(ant)            Antenna/OmniAntenna        ;# antenna model
set val(ifqlen)         50                         ;# max packet in ifq
set val(nn)             5                         ;# number of mobilenodes
set val(rp)             AODV                       ;# routing protocol
set val(x)              1200  			   ;# X dimension of topography
set val(y)              1000   			   ;# Y dimension of topography  
set val(stop)		50			   ;# time of simulation end
set val(err)        UniformErrorProc
# Set up topography object
#-------------------------------------------
set ns		  [new Simulator]
set tracefd       [open simple.tr w]
set windowVsTime2 [open win.tr w] 
set namtrace      [open simwrls.nam w] 
$ns use-newtrace
$ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)

# set up topography object
set topo       [new Topography]
#puts "dfdfdf"
#$ns node-config 
#puts "fdfdfdfd"
$topo load_flatgrid $val(x) $val(y)


#	ErrorModule set debug_ false        
#  ErrorModel set enable_ 1
#  ErrorModel set markecn_ false
#ErrorModule set debug_ false
#
#ErrorModel set enable_ 1
#ErrorModel set markecn_ false
#ErrorModel set bandwidth_ 2Mb
#ErrorModel set rate_ 0.00001
#
#ErrorModel/Trace set good_ 123456789
#ErrorModel/Trace set loss_ 0
#ErrorModel/Periodic set period_ 3.0
#ErrorModel/Periodic set offset_ 0.0
#ErrorModel/Periodic set burstlen_ 0.0
#ErrorModel/MultiState set curperiod_ 0.0
#ErrorModel/MultiState set sttype_ pkt
#ErrorModel/MultiState set texpired_ 0

proc UniformErrorProc {} {
	puts "dfdfad-----------------------------"
	set err [new ErrorModel]
	$err unit pkt
	#$err FECstrength 1 
	#$err datapktsize 1000
   	#$err cntrlpktsize 80
	$err set rate_ 0.1
	#$err drop-target [new Agent/Null]
	return $err
}	
	
# Create God
#-------------------------------------------
create-god $val(nn)

# Configure node
#-------------------------------------------------

$ns node-config -adhocRouting $val(rp) \
			 -llType $val(ll) \
			 -macType $val(mac) \
			 -ifqType $val(ifq) \
			 -ifqLen $val(ifqlen) \
			 -antType $val(ant) \
			 -propType $val(prop) \
			 -phyType $val(netif) \
			 -channel [new $val(chan)] \
			 -topoInstance $topo \
			 -agentTrace ON \
			 -routerTrace OFF \
			 -macTrace OFF \
			 -movementTrace OFF \
			 -IncomingErrProc $val(err)\
			 -OutgoingErrProc $val(err)			 

#			 -IncomingErrorProc ($err) \
#			 -OutcomingErrorProc UniformErrorProc	
 
for {set i 0} {$i < $val(nn) } { incr i } {
	set node_($i) [$ns node]	
}


# Provide initial (X,Y, for now Z=0) co-ordinates for mobilenodes
#---------------------------------------------------------------
$node_(0) set X_ 600.0
$node_(0) set Y_ 500.0
$node_(0) set Z_ 0.0

$node_(1) set X_ 800.0
$node_(1) set Y_ 400.0
$node_(1) set Z_ 0.0

$node_(2) set X_ 1000.0
$node_(2) set Y_ 400.0
$node_(2) set Z_ 0.0

$node_(3) set X_ 800.0
$node_(3) set Y_ 600.0
$node_(3) set Z_ 0.0

$node_(4) set X_ 1000.0
$node_(4) set Y_ 600.0
$node_(4) set Z_ 0.0

# Now produce some simple node movements
#---------------------------------------------------
#$ns at 10.0 "$node_(0) setdest 250.0 250.0 3.0"
#$ns at 15.0 "$node_(1) setdest 45.0 285.0 5.0"
#$ns at 110.0 "$node_(0) setdest 480.0 300.0 5.0" 


# Setup traffic flow between nodes
#---------------------------------------------------
set tcp [new Agent/TCP/Newreno]
$tcp set class_ 2
set sink [new Agent/TCPSink]
$ns attach-agent $node_(0) $tcp
$ns attach-agent $node_(2) $sink
$ns connect $tcp $sink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns at 1.0 "$ftp start" 

set udp_(0) [new Agent/UDP]
$udp_(0) set fid_ 1
$ns attach-agent $node_(0) $udp_(0)
set null_(0) [new Agent/Null]
$ns attach-agent $node_(4) $null_(0)

set cbr_(0) [new Application/Traffic/CBR]
$cbr_(0) set packetSize_ 200
$cbr_(0) set interval_ 0.01
$cbr_(0) set random_ 1
$cbr_(0) set maxpkts_ 10000
$cbr_(0) attach-agent $udp_(0)

$ns connect $udp_(0) $null_(0)
$ns at 11.0 "$cbr_(0) start"
# Printing the window size
proc plotWindow {tcpSource file} {
	global ns
	set time 0.01
	set now [$ns now]
	set cwnd [$tcpSource set cwnd_]
	puts $file "$now $cwnd"
	$ns at [expr $now+$time] "plotWindow $tcpSource $file" }
	$ns at 10.1 "plotWindow $tcp $windowVsTime2"  

# Define node initial position in nam
	for {set i 0} {$i < $val(nn)} { incr i } {
# 30 defines the node size for nam
	$ns initial_node_pos $node_($i) 30
}

# Telling nodes when the simulation ends
for {set i 0} {$i < $val(nn) } { incr i } {
    $ns at $val(stop) "$node_($i) reset";
}


# Tell nodes when the simulation ends
#---------------------------------------------------
$ns at $val(stop) "$ns nam-end-wireless $val(stop)"
$ns at $val(stop) "stop"
$ns at 50.01 "puts \"end simulation\" ; $ns halt"


proc stop {} {
    global ns tracefd namtrace
    $ns flush-trace
    close $tracefd
    close $namtrace
}

	
#set fh [open dyn.trc w] 
#proc my-dump-routes {node fh} {
#		set dr [$node rtObject]
#		$dr dump-routes $fh
#	}
#$ns at 5.0 "$node_(0) dump-routes $fh"

$ns run