Hi every body;
I have to do a scnerio for infrastructure mode with one AP with two STA.
I use for that infra.tcl as a reference.
when runnig the tcl below, i have a problem "erreur de segmentation"
--------tcl script------------
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 ;# 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) DumbAgent ;# routing protocol
set val(x) 600
set val(y) 600
Mac/802_11 set dataRate_ 11Mb
#Phy/WirelessPhy set CSThresh_ 10.00e-12
#Phy/WirelessPhy set RXThresh_ 10.00e-11
#Phy/WirelessPhy set Pt_ 0.1
#Phy/WirelessPhy set Pt_ 7.214e-3
# Initialize Global Variables
set ns [new Simulator]
set tracefile [open infra.tr w]
set namtrace [open infra.nam w]
$ns trace-all $tracefile
$ns namtrace-all-wireless $namtrace $val(x) $val(y)
#Open the output files
set f0 [open out0.tr w]
#Define a 'finish' procedure
proc stop {} {
global ns tracefile namtrace
$ns flush-trace
close $tracefile
close $namtrace
exec infra.nam &
#exec xgraph out0.tr -geometry 800x400 &
exit 0
}
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
# Create God
create-god $val(nn)
# Create channel
set chan_1_ [new $val(chan)]
$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 \
-agentTrace OFF \
-routerTrace OFF \
-macTrace ON \
-movementTrace ON \
-channel $chan_1_
for {set i 0} {$i < [expr $val(nn)]} {incr i} {
set node_($i) [$ns node]
$node_($i) random-motion 0 ;# disable random motion
set mac_($i) [$node_($i) getMac 0]
$mac_($i) set RTSThreshold_ 3000
$node_($i) set X_ $i
$node_($i) set Y_ 0 ;# Horizontal arrangement of nodes
$node_($i) set Z_ 0.0
}
#Set Node 0 and Node $val(nn) as the APs. Thus the APs are the ends of the
horizontal line. Each STA receives different power levels.
set AP_ADDR1 [$mac_(0) id]
$mac_(0) ap $AP_ADDR1
#$mac_([expr $val(nn) - 1]) set BeaconInterval_ 0.2
$mac_(1) ScanType ACTIVE
for {set i 3} {$i < [expr $val(nn) - 1]} {incr i} {
$mac_($i) ScanType PASSIVE ;#Passive
}
#$ns at 1.0 "$mac_(2) ScanType ACTIVE"
Application/Traffic/CBR set packetSize_ 1023
Application/Traffic/CBR set rate_ 256Kb
for {set i 1} {$i < [expr $val(nn) - 1]} {incr i} {
set udp1($i) [new Agent/UDP]
$ns attach-agent $node_($i) $udp1($i)
set cbr1_($i) [new Application/Traffic/CBR]
$cbr1_($i) attach-agent $udp1($i)
$ns at 2.0 "$cbr1_($i) start"
}
set base0 [new Agent/Null]
$ns attach-agent $node_(1) $base0
set base1 [new Agent/Null]
$ns attach-agent $node_(2) $base1
$ns at 20.0 "stop"
$ns at 20.0 "puts \"NS EXITING...\" ; $ns halt"
puts "Starting Simulation..."
$ns run
--------end of script
why the problem of "erreur de segmentation"?
Please some help?
it is so urgent
