Hi….
Hope you all will be at quiet ease. I have configured ns
2.29 with help of cygwin on windows xp professional 2003. When I executed the
example4.tcl (Creating output files for Xgraph) given in tutorial: I have just
three options on Xgraph “CLOSE HDCPY ABOUT ”, I have no commands of “ANIM
REPLOT
DERIV” plz help me what to do….?
Example is here:
#Example4.tcl
#Create a simulator object
set ns [new Simulator]
#Open the output files
set f0 [open out0.tr w]
set f1 [open out1.tr w]
set f2 [open out2.tr w]
#Create 5 nodes
set n0 [$ns node]
set n1 [$ns node]
set n2 [$ns node]
set n3 [$ns node]
set n4 [$ns node]
#Connect the nodes
$ns duplex-link $n0 $n3 1Mb 100ms DropTail
$ns duplex-link $n1 $n3 1Mb 100ms DropTail
$ns duplex-link $n2 $n3 1Mb 100ms DropTail
$ns duplex-link $n3 $n4 1Mb 100ms DropTail
#Define a 'finish' procedure
proc finish {} {
global f0 f1 f2
#Close the output files
close $f0
close $f1
close $f2
#Call xgraph to display the results
exec xgraph out0.tr out1.tr out2.tr
-geometry 800x400 &
exit 0
}
#Define a procedure that attaches a UDP agent to a previously created node
#'node' and attaches an Expoo traffic generator to the agent with the
#characteristic values 'size' for packet size 'burst' for burst time,
#'idle' for idle time and 'rate' for burst peak rate. The procedure connects
#the source with the previously defined traffic sink 'sink' and returns the
#source object.
proc attach-expoo-traffic { node sink size burst idle rate } {
#Get an instance of the simulator
set ns [Simulator instance]
#Create a UDP agent and attach it to
the node
set source [new Agent/UDP]
$ns attach-agent $node $source
#Create an Expoo traffic agent and
set its configuration parameters
set traffic [new
Application/Traffic/Exponential]
$traffic set packetSize_ $size
$traffic set burst_time_ $burst
$traffic set idle_time_ $idle
$traffic set rate_ $rate
# Attach traffic source to the
traffic generator
$traffic attach-agent $source
#Connect the source and the sink
$ns connect $source $sink
return $traffic
}
#Define a procedure which periodically records the bandwidth received by the
#three traffic sinks sink0/1/2 and writes it to the three files f0/1/2.
proc record {} {
global sink0 sink1 sink2 f0 f1 f2
#Get an instance of the simulator
set ns [Simulator instance]
#Set the time after which the
procedure should be called again
set time 0.5
#How many bytes have been received
by the traffic sinks?
set bw0 [$sink0 set bytes_]
set bw1 [$sink1 set bytes_]
set bw2 [$sink2 set bytes_]
#Get the current time
set now [$ns now]
#Calculate the bandwidth (in MBit/s)
and write it to the files
puts $f0 "$now [expr
$bw0/$time*8/1000000]"
puts $f1 "$now [expr
$bw1/$time*8/1000000]"
puts $f2 "$now [expr
$bw2/$time*8/1000000]"
#Reset the bytes_ values on the
traffic sinks
$sink0 set bytes_ 0
$sink1 set bytes_ 0
$sink2 set bytes_ 0
#Re-schedule the procedure
$ns at [expr $now+$time]
"record"
}
#Create three traffic sinks and attach them to the node n4
set sink0 [new Agent/LossMonitor]
set sink1 [new Agent/LossMonitor]
set sink2 [new Agent/LossMonitor]
$ns attach-agent $n4 $sink0
$ns attach-agent $n4 $sink1
$ns attach-agent $n4 $sink2
#Create three traffic sources
set source0 [attach-expoo-traffic $n0 $sink0 200 2s 1s 100k]
set source1 [attach-expoo-traffic $n1 $sink1 200 2s 1s 200k]
set source2 [attach-expoo-traffic $n2 $sink2 200 2s 1s 300k]
#Start logging the received bandwidth
$ns at 0.0 "record"
#Start the traffic sources
$ns at 10.0 "$source0 start"
$ns at 10.0 "$source1 start"
$ns at 10.0 "$source2 start"
#Stop the traffic sources
$ns at 50.0 "$source0 stop"
$ns at 50.0 "$source1 stop"
$ns at 50.0 "$source2 stop"
#Call the finish procedure after 60 seconds simulation time
$ns at 60.0 "finish"
#Run the simulation
$ns run
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