I've simulated an adhoc network using ns2, and generated NAM trace file. When I open this file using NAM, it shows nodes by numbered circles, but when I play the animation, nothing happens. Also reducing or increasing speed does not change the behavior.
Now, the question is: what can I do to make NAM display the transmissions between nodes in its animation?
I think that this problem caused by misconfiguration of the recording animation event.Try this code :
set val(chan) Channel/WirelessChannel ;# channel type
set val(prop) Propagation/Nakagami ;# 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) 200
set val(y) 200
# ======================================================================
# Main Program
# ======================================================================
set ns_ [new Simulator]
set tracefd [open simple-udp.tr w]
$ns_ trace-all $tracefd
set namtrace [open simple-udp.nam w]
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
#########################################
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
#
# 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) \
-channelType $val(chan) \
-topoInstance $topo \
-agentTrace ON \
-routerTrace ON \
-macTrace ON \
-movementTrace OFF\
# -OutgoingErrProc UniformErr
set node_(0) [$ns_ node]
$node_(0) random-motion 0
set node_(1) [$ns_ node]
$node_(1) random-motion 0
set node_(2) [$ns_ node]
$node_(2) random-motion 0
set node_(3) [$ns_ node]
$node_(3) random-motion 0
set node_(4) [$ns_ node]
$node_(4) random-motion 0
#
# Provide initial (X,Y, for now Z=0) co-ordinates for mobilenodes
#
$node_(0) set X_ 0
$node_(0) set Y_ 0
$node_(0) set Z_ 0.0
$node_(1) set X_ 70
$node_(1) set Y_ 50
$node_(1) set Z_ 0.0
$node_(2) set X_ 70
$node_(2) set Y_ 0
$node_(2) set Z_ 0.0
$node_(3) set X_ 70
$node_(3) set Y_ -50
$node_(3) set Z_ 0.0
$node_(4) set X_ 400
$node_(4) set Y_ 0
$node_(4) set Z_ 0.0
for {set i 0} {$i < $val(nn)} {incr i} {
$ns_ initial_node_pos $node_($i) 30
}
#Setup first UDP connection
set udp [new Agent/UDP]
$ns_ attach-agent $node_(0) $udp
set null [new Agent/LossMonitor]
$ns_ attach-agent $node_(4) $null
$ns_ connect $udp $null
$udp set fid_ 5
#Setup first CBR over first UDP connection
set cbr [new Application/Traffic/CBR]
$cbr attach-agent $udp
$cbr set type_ CBR
$cbr set packet_size_ 500
$cbr set rate_ 100kb
$cbr set random_ false
$ns_ at 0.0 "$cbr start"
$ns_ at 10.0 "$cbr stop"
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at 10.01 "$node_($i) reset";
}
$ns_ at 10.0 "stop"
$ns_ at 10.01 "puts \"NS EXITING...\" ; $ns_ halt"
proc stop {} {
global ns_ tracefd namtrace
$ns_ flush-trace
close $tracefd
close $namtrace
}
puts "Starting Simulation..."
$ns_ run
Try this example.
Configuration, Ubuntu 14., NS2 ver. 2.35
Requirements, NS2 should be available.
Save the file as test.tcl
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) 4 ;# number of mobilenodes
set val(rp) AODV ;# routing protocol
set val(x) 827 ;# X dimension of topography
set val(y) 470 ;# Y dimension of topography
set val(stop) 2.0 ;# time of simulation end
# initialization
#Create a ns simulator
set ns [new Simulator]
#Setup topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
create-god $val(nn)
#Open the trace file
set tracefile [open test.tr w]
$ns trace-all $tracefile
#Open the NAM
set namfile [open test.nam w]
$ns namtrace-all $namfile
$ns namtrace-all-wireless $namfile $val(x) $val(y)
set chan [new $val(chan)];
# node parameters
$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 $chan \
-topoInstance $topo \
-agentTrace ON \
-routerTrace ON \
-macTrace ON \
-movementTrace ON
# Nodes definition
set n0 [$ns node]
$n0 set X_ 199
$n0 set Y_ 200
$n0 set Z_ 0.0
$ns initial_node_pos $n0 20
set n1 [$ns node]
$n1 set X_ 349
$n1 set Y_ 364
$n1 set Z_ 0.0
$ns initial_node_pos $n1 20
set n2 [$ns node]
$n2 set X_ 590
$n2 set Y_ 370
$n2 set Z_ 0.0
$ns initial_node_pos $n2 20
set n3 [$ns node]
$n3 set X_ 727
$n3 set Y_ 172
$n3 set Z_ 0.0
$ns initial_node_pos $n3 20
# Agents - UDP
#Setup a UDP connection
set udp0 [new Agent/UDP]
$ns attach-agent $n0 $udp0
set null1 [new Agent/Null]
$ns attach-agent $n3 $null1
$ns connect $udp0 $null1
$udp0 set packetSize_ 1500
#Setup a CBR Application over UDP connection
set cbr0 [new Application/Traffic/CBR]
$cbr0 attach-agent $udp0
$cbr0 set packetSize_ 1000
$cbr0 set rate_ 1.0Mb
$cbr0 set random_ null
$ns at 0.0 "$cbr0 start"
$ns at 2.0 "$cbr0 stop"
proc finish {} {
global ns tracefile namfile
$ns flush-trace
close $tracefile
close $namfile
exec nam test.nam &
exit 0
}
for {set i 0} {$i < $val(nn) } { incr i } {
$ns at $val(stop) "\$n$i reset"
}
$ns at $val(stop) "$ns nam-end-wireless $val(stop)"
$ns at $val(stop) "finish"
$ns at $val(stop) "puts \"done\" ; $ns halt"
$ns run
