Hi every body;
I have to do a networks "wlan" with one AP and 6 nodes.
But when running this script below, I found this problem "Direction for
pkt-flow not specified; Sending pkt up the stack on default."
# 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) 7 ;# number of mobile nodes
set val(rp) DumbAgent ;# routing protocol
set val(x) 600 ;# X dimension of topography
set val(y) 600 ;# Y dimension of topography
set val(stop) 50 ;# time of simulation end
#DSSS (IEEE802.11b)
Mac/802_11 set SlotTime_ 0.000020 ;# 20us
Mac/802_11 set SIFS_ 0.000010 ;# 10us
Mac/802_11 set PreambleLength_ 144 ;# 144 bit
Mac/802_11 set PLCPHeaderLength_ 48 ;# 48 bits
Mac/802_11 set PLCPDataRate_ 1.0e6 ;# 1Mbps
Mac/802_11 set dataRate_ 11.0e6 ;# 11Mbps
Mac/802_11 set basicRate_ 1.0e6 ;# 1Mbps
Mac/802_11 set RTSThreshold_ 3000 ;# Disable RTS/CTS
# frequency is 2.4 GHz
Phy/WirelessPhy set freq_ 2.4e+9
# Main Program
set ns [new Simulator]
set tracefile [open Roaming-out.tr w]
set namtrace [open Roaming-out.nam w]
$ns trace-all $tracefile
$ns namtrace-all-wireless $namtrace $val(x) $val(y)
$ns color 1 Blue
# Set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
# Create god (node)
create-god $val(nn)
# Create channel
set chan_1_ [new $val(chan)]
# Configure the wireless 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 OFF \
-routerTrace OFF \
-macTrace ON \
-movementTrace ON \
-channel $chan_1_
for {set i 0} {$i < $val(nn)} {incr i} {
set node_($i) [$ns node]
$node_($i) random-motion 0 ;# disable random motion
set mac_($i) [$node_($i) getMac 0]
$mac_($i) set RTSThreshold_ 3000
}
#Set node_(0) and node_(1) as the APs
set AP_ADDR1 [$mac_(0) id]
$mac_(0) ap $AP_ADDR1
$mac_(0) ScanType PASSIVE
$ns at 0.0 "$node_(0) label AP"
#$node_(0) set BeaconInterval_ 0.2
$node_(0) set X_ 100.0
$node_(0) set Y_ 300.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 180.0
$node_(1) set Y_ 250.0
$node_(1) set Z_ 0.0
$ns at 0.2 "$mac_(1) ScanType ACTIVE"
$ns at 0.5 "$mac_(2) ScanType ACTIVE"
$ns at 1.0 "$mac_(3) ScanType ACTIVE"
$ns at 1.5 "$mac_(4) ScanType ACTIVE"
$ns at 2.0 "$mac_(5) ScanType ACTIVE"
$ns at 2.5 "$mac_(6) ScanType ACTIVE"
$node_(2) set X_ 120.0
$node_(2) set Y_ 190.0
$node_(2) set Z_ 0.0
$node_(3) set X_ 210.0
$node_(3) set Y_ 210.0
$node_(3) set Z_ 0.0
$node_(4) set X_ 150.0
$node_(4) set Y_ 350.0
$node_(4) set Z_ 0.0
$node_(5) set X_ 80.0
$node_(5) set Y_ 450.0
$node_(5) set Z_ 0.0
$node_(6) set X_ 40.0
$node_(6) set Y_ 200.0
$node_(6) set Z_ 0.0
for {set i 1 } {$i < [expr $val(nn) - 1] } {incr i} {
set rtp1($i) [new Agent/RTP]
set null1($i) [new Agent/Null]
$ns attach-agent $node_($i) $rtp1($i)
$ns attach-agent $node_(0) $null1($i)
$ns connect $rtp1($i) $null1($i)
set cbr1($i) [new Application/Traffic/CBR]
$cbr1($i) attach-agent $rtp1($i)
$ns at 5.0 "$cbr1($i) start"
}
# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
# 1 defines the node size for name
$ns initial_node_pos $node_($i) 20
}
# Telling nodes when the simulation ends
for {set i 0} {$i < $val(nn)} {incr i} {
$ns at $val(stop) "$node_($i) reset";
}
# ending nam and the simulation
$ns at $val(stop) "$ns nam-end-wireless $val(stop)"
$ns at $val(stop) "stop"
$ns at 50.1 "puts \"end simulation\" ; $ns halt"
proc stop {} {
global ns tracefile namtrace
$ns flush-trace
close $tracefile
close $namtrace
exec nam Roaming-out.nam &
}
# informative headers for CMUTracefile
puts $tracefile "M 0.0 nn $val(nn) x $val(x) y $val(y) rp $val(rp)"
puts $tracefile "M 0.0 prop $val(prop) ant $val(ant)"
puts "Starting Simulation..."
$ns run
I can't figure the problem.
The trace file has this format:
D 5.003750000 _2_ IFQ ARP 1 cbr 268 [13a 0 ffffffff 800] ------- [2:0 0:1 32
0] [1] 0 0
D 5.003750000 _3_ IFQ ARP 2 cbr 268 [13a 0 ffffffff 800] ------- [3:0 0:2 32
0] [1] 0 0
D 5.003750000 _4_ IFQ ARP 3 cbr 268 [13a 0 ffffffff 800] ------- [4:0 0:3 32
0] [1] 0 0
D 5.003750000 _5_ IFQ ARP 4 cbr 268 [13a 0 ffffffff 800] ------- [5:0 0:4 32
0] [1] 0 0
s 5.004274956 _0_ MAC --- 0 BCN 72 [0 ffffffff ffffffff 0]
s 5.004941329 _2_ MAC --- 7 cbr 210 [0 0 ffffffff 800] ------- [3:0 0:2 32 0]
[2] 0 0
s 5.005151636 _3_ MAC --- 8 cbr 210 [0 0 ffffffff 800] ------- [4:0 0:3 32 0]
[2] 0 0
s 5.005342144 _4_ MAC --- 9 cbr 210 [0 0 ffffffff 800] ------- [5:0 0:4 32 0]
[2] 0 0
s 5.005672686 _2_ MAC --- 7 cbr 210 [0 0 ffffffff 800] ------- [3:0 0:2 32 0]
[2] 0 0
s 5.005822969 _1_ MAC --- 6 cbr 210 [0 0 ffffffff 800] ------- [2:0 0:1 32 0]
[2] 0 0
How can disable "ARP"
please some help
