*hi all,
friends there is error while running following tcl file on ns-2.31 in
cygwin:*
# A simple example for wireless simulation
# ======================================================================
# Define options
# ======================================================================
set val(chan) Channel/WirelessChannel
set val(prop) Propagation/TwoRayGround
set val(netif) Phy/WirelessPhy
set val(mac) Mac/802_11
set val(ifq) Queue/DropTail/PriQueue
set val(ll) LL
set val(ant) Antenna/OmniAntenna
set val(x) 670 ;# X dimension of the topography
set val(y) 670 ;# Y dimension of the topography
set val(ifqlen) 50 ;# max packet in ifq
set val(seed) 0.0
set val(adhocRouting) DSR
set val(nn) 3 ;# how many nodes are simulated
set val(cp) "../mobility/scene/cbr-3-test"
set val(sc) "../mobility/scene/scen-3-test"
set val(stop) 400.0 ;# simulation time
# =====================================================================
# Main Program
# ======================================================================
#
# Initialize Global Variables
#
# create simulator instance
set ns_ [new Simulator]
# setup topography object
set topo [new Topography]
# create trace object for ns and nam
set tracefd [open wireless1-out.tr w]
set namtrace [open wireless1-out.nam w]
$ns_ trace-all $tracefd
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
# define topology
$topo load_flatgrid $val(x) $val(y)
#
# Create God
#
set god_ [create-god $val(nn)]
#
# define how node should be created
#
#global node setting
$ns_ node-config -adhocRouting $val(adhocRouting) \
-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 $topo \
-agentTrace ON \
-routerTrace OFF \
-macTrace OFF
#
# Create the specified number of nodes [$val(nn)] and "attach" them
# to the channel.
for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Define node movement model
#
puts "Loading connection pattern..."
source $val(cp)
#
# Define traffic model
#
puts "Loading scenario file..."
source $val(sc)
# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
# 20 defines the node size in nam, must adjust it according to your
scenario
# The function must be called after mobility model is defined
$ns_ initial_node_pos $node_($i) 20
}
#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at $val(stop).0 "$node_($i) reset";
}
$ns_ at $val(stop).0002 "puts \"NS EXITING...\" ; $ns_ halt"
puts $tracefd "M 0.0 nn $val(nn) x $val(x) y $val(y) rp $val(adhocRouting)"
puts $tracefd "M 0.0 sc $val(sc) cp $val(cp) seed $val(seed)"
puts $tracefd "M 0.0 prop $val(prop) ant $val(ant)"
puts "Starting Simulation..."
$ns_ run
*i got following error:*
$ns wireless1.tcl
num_node is set 3
warning: Please use-channel as shown in tcl/ex/wireless-mitf.tcl
INITIALIZE THE LIST xListHead
Loading connection pattern...
couldn't read file "../mobility/scene/cbr-3-test": no such file or directory
while executing
"source.orig ../mobility/scene/cbr-3-test"
("uplevel" body line 1)
invoked from within
"uplevel source.orig [list $fileName]"
invoked from within
"if [$instance_ is_http_url $fileName] {
setbuffer [$instance_ read_url $fileName]
uplevel eval $buffer
} else {
uplevel source.orig [list $fileName]
..."
(procedure "source" line 8)
invoked from within
"source $val(cp)"
(file "wireless1.tcl" line 121)
*please help me for this as soon as possible*
*thanx*
