[ns] wireless sample can not work

[林 哲弘]

Hi, all 
I'm testing a sample of wireless in ns2
But I got error like this

kerkerred@kerkerred-VirtualBox:~$ ns wirless.tcl
num_nodes is set 2
warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
INITIALIZE THE LIST xListHead
Starting Simulation...
Direction for pkt-flow not specified; Sending pkt up the stack on default.

(core dumped)


and this is my tcl code.

Could anyone give me some suggestion?


# simple-wireless.tcl
# A simple example for wireless simulation

# ======================================================================
# Define options
# ======================================================================
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)             2                          ;# number of mobilenodes
set val(rp)             DSDV                       ;# routing protocol

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


#
# Initialize Global Variables
#
set ns_        [new Simulator]
set tracefd     [open simple.tr w]
$ns_ trace-all $tracefd

set nf [open out.nam w]
$ns_ namtrace-all-wireless $nf 500 500

# -----------------------------------------------------------------
# Set up wireless network simulation
# -----------------------------------------------------------------

# Create topography object to hold wireless scenario
set topo       [new Topography]

$topo load_flatgrid 500 500        ;# Grid size is 500x500

#
# Create god object
#
create-god $val(nn)

set chan_1_ [new $val(chan)]
#
#  Create the specified number of mobilenodes [$val(nn)] and "attach" them
#  to the channel. 
#  Here two nodes are created : node(0) and node(1)

# 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 OFF \
         -movementTrace OFF            

# 802.11b
Phy/WirelessPhy set Pt_ 0.031622777
Phy/WirelessPhy set bandwidth_ 11Mb
Mac/802_11 set dataRate_ 11Mb
Mac/802_11 set basicRate_ 1Mb

Phy/WirelessPhy set freq_ 2.472e9

Phy/WirelessPhy set CPThresh_ 5.011872e-12
Phy/WirelessPhy set CSThresh_ 5.011872e-12
Phy/WirelessPhy set L_ 1.0
Phy/WirelessPhy set RXThresh_ 5.82587e-09

# --------------------------------------------------------
# Direct mobile node's movements
# --------------------------------------------------------

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 mobilenodes
#
$node_(0) set X_ 10.0
$node_(0) set Y_ 20.0
$node_(0) set Z_ 0.0

$node_(1) set X_ 10.0
$node_(1) set Y_ 40.0
$node_(1) set Z_ 0.0

$ns_ initial_node_pos $node_(0) 10
$ns_ initial_node_pos $node_(1) 10
#
# Now produce some simple node movements
# Node_(1) starts to move towards node_(0)
#
#$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" 


# ---------------------------------------------------------------
# The rest is "ordinary" network connection setup
# ---------------------------------------------------------------

# Setup TCP connections between node_(0) and node_(1)

set tcp [new Agent/TCP]
$ns_ attach-agent $node_(0) $tcp
$tcp set class_ 2

set sink [new Agent/TCPSink]
$ns_ attach-agent $node_(1) $sink

$ns_ connect $tcp $sink

# Setup FTP flow for TCP connection

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 150.0 "stop"
$ns_ at 150.01 "puts \"NS EXITING...\" ; $ns_ halt"

proc stop {} {
    global ns_ tracefd
    $ns_ flush-trace
    close $tracefd
}

puts "Starting Simulation..."
$ns_ run