I tried simulating a simple wireless scenario of two mobile nodes moving
towards each other and after a while moves away . the simulation builds and
runs well,but i cant see the two nodes in the NAM animation though the TR file
shows the simulation generated correct results..below is the scripts.please
help!!!!
# =====================================================================
# Define options
# =====================================================================
set val(chan) Channel/WirelessChannel ;# channel type
set val(prop) Propagation/TwoRayGround ;# radio-propagation model
set val(ant) Antenna/OmniAntenna ;# Antenna type
set val(ll) LL ;# Link layer type
set val(ifq) Queue/DropTail/PriQueue ;# Interface queue type
set val(ifqlen) 50 ;# max packet in ifq
set val(netif) Phy/WirelessPhy ;# network interface type
set val(mac) Mac/802_11 ;# MAC type
set val(rp) DSDV ;# ad-hoc routing protocol
set val(x) 500 ;# x-axis of grid
set val(y) 500 ;# y-axis of grid
set val(nn) 2 ;# number of mobilenodes
set ns_ [new Simulator]
set tracefd [open simple.tr w]
$ns_ trace-all $tracefd
set nf [open simple.nam w]
$ns_ namtrace-all-wireless $nf $val(x) $val(y)
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
create-god $val(nn)
#(parameter examples)
# $ns_ node-config -addressingType flat or hierarchical or expanded
# -adhocRouting DSDV or DSR or TORA
# -llType LL
# -macType Mac/802_11
# -propType "Propagation/TwoRayGround"
# -ifqType "Queue/DropTail/PriQueue"
# -ifqLen 50
# -phyType "Phy/WirelessPhy"
# -antType "Antenna/OmniAntenna"
# -channelType "Channel/WirelessChannel"
# -topoInstance $topo
# -energyModel "EnergyModel"
# -initialEnergy (in Joules)
# -rxPower (in W)
# -txPower (in W)
# -agentTrace ON or OFF
# -routerTrace ON or OFF
# -macTrace ON or OFF
# -movementTrace ON or OFF
# Configure nodes
$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) \
-topoInstance $topo \
-channelType $val(chan) \
-agentTrace ON \
-routerTrace ON \
-macTrace OFF \
-movementTrace OFF
for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Provide initial (X,Y, for now Z=0) co-ordinates for node_(0) and node_(1)
#
$node_(0) set X_ 5.0
$node_(0) set Y_ 2.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 390.0
$node_(1) set Y_ 385.0
$node_(1) set Z_ 0.0
#
# Node_(1) starts to move towards node_(0)
#
$ns_ at 50.0 "$node_(1) setdest 25.0 20.0 15.0"
$ns_ at 10.0 "$node_(0) setdest 20.0 18.0 1.0"
# Node_(1) then starts to move away from node_(0)
$ns_ at 100.0 "$node_(1) setdest 490.0 480.0 15.0"
# TCP connections between node_(0) and node_(1)
set tcp [new Agent/TCP]
$tcp set class_ 2
set sink [new Agent/TCPSink]
$ns_ attach-agent $node_(0) $tcp
$ns_ attach-agent $node_(1) $sink
$ns_ connect $tcp $sink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns_ at 10.0 "$ftp start"
#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at 150.0 "$node_($i) reset";
}
$ns_ at 150.0001 "stop"
$ns_ at 150.0002 "puts \"NS EXITING...\" ; $ns_ halt"
proc stop {} {
global ns_ tracefd
close $tracefd
}
puts "Starting Simulation..."
$ns_ run
