Hi
Please run the script file(this is Wireless senario).
Could you tel me, why the data packet's send start at (about) 50th Second?
I have set it to start at 10th second.($ns at 10 $ftp start).
I have used DSDV routing protocol, and I think the routing table in
all 3 nodes are created until 3 second(Right?). So, why the packet
sending late until 50th second?
The Script File is as:
# 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) 3 ;# number of mobilenodes
set val(rp) DSDV ;# routing protocol
#set val(rp) AODV ;# routing protocol
set val(x) 500
set val(y) 400
set val(stop) 150
set ns [new Simulator]
set tracefd [open simple.tr w]
set windowVsTime2 [open win.tr w]
set namtrace [open SimWrls.nam w]
$ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
create-god $val(nn)
# Create channel #1 and #2
set chan_1_ [new $val(chan)]
set chan_2_ [new $val(chan)]
# configure the 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 \
-agentTrace ON \
-routerTrace ON \
-macTrace OFF \
-movementTrace ON \
-channel $chan_1_
for {set i 0} {$i$val(nn)} {incr i} {
set node_($i) [$ns node]
}
#set initial Location of nodes
$node_(0) set X_ 5.0
$node_(0) set Y_ 5.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 490.0
$node_(1) set Y_ 285.0
$node_(1) set Z_ 0.0
$node_(2) set X_ 150.0
$node_(2) set Y_ 240.0
$node_(2) set Z_ 0.0
#$node_(3) set X_ 230.0
#$node_(3) set Y_ 240.0
#$node_(3) set Z_ 0.0
#Movement Statemnet
$ns at 10.0 $node_(0) setdest 250.0 250.0 3.0
$ns at 15.0 $node_(1) setdest 45.0 285.0 5.0
$ns at 110.0 $node_(0) setdest 480.0 300.0 5.0
#$ns at 70.0 $node_(1) setdest 455.0 252.0 5.0
#$ns at 90.0 $node_(1) setdest 490.0 285.0 5.0
set tcp [new Agent/TCP/Newreno]
$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 $ftp start
proc plotWindow {tcpSource file} {
global ns
set time 0.01
set now [$ns now]
set cwnd [$tcpSource set cwnd_]
puts $file $now $cwnd
$ns at [expr $now+$time] plotWindow $tcpSource $file
}
$ns at 10.1 plotWindow $tcp $windowVsTime2
for {set i 0} {$i$val(nn)} { incr i} {
$ns initial_node_pos $node_($i) 30
}
for {set i 0} {$i$val(nn)} { incr i} {
$ns at $val(stop) $node_($i) reset;
}
$ns at $val(stop) $ns nam-end-wireless $val(stop)
$ns at $val(stop) stop
$ns at $val(stop)+0.01 puts \end simulation\ ; $ns halt
$ns at 0.1 plotWindow $tcp $windowVsTime2
proc stop {} {
global ns tracefd namtrace
$ns flush-trace
close $tracefd
close $namtrace
#puts SA:AM
exec nam simwrls.nam
# exec nam myout2.nam
exit 0
}
$ns run
--
thanks
Hosseini Nazhad.
