Hello All,
I wrote a simple wired-wless scenario
Wired_node----Base_Station----Mobile_Node
but I keep receiving the message: "warning: Route to base_stn not known:
dropping pkt"
I searched for this and I could see this means the Base-Station cannot reach
the mobile node.
I treid many alternatives of position... But I could node solve the problem!
Here is my code.
I apreciate very much your help.
Bruno
____________________________________________________________________________
set opt(chan) Channel/WirelessChannel ;# channel type
set opt(prop) Propagation/TwoRayGround ;# radio-propagation
model
set opt(netif) Phy/WirelessPhy ;# network interface type
set opt(mac) Mac/802_11 ;# MAC type
set opt(ifq) Queue/DropTail/PriQueue ;# interface queue type
set opt(ll) LL ;# link layer type
set opt(ant) Antenna/OmniAntenna ;# antenna model
set opt(ifqlen) 50 ;# max packet in ifq
set opt(nn) 1 ;# number of mobilenodes
set opt(adhocRouting) DSDV ;# routing protocol
set opt(cp) "" ;# connection pattern
file
set opt(sc) "" ;# node movement file.
set opt(x) 600 ;# x coordinate of topology
set opt(y) 600 ;# y coordinate of topology
set opt(seed) 0.0 ;# seed for random number
gen.
set opt(stop) 10 ;# time to stop simulation
#set opt(ftp1-start) 0.1
set num_wired_nodes 1
set num_bs_nodes 1
#
============================================================================
# check for boundary parameters and random seed
if { $opt(x) == 0 || $opt(y) == 0 } {
puts "No X-Y boundary values given for wireless topology\n"
}
if {$opt(seed) > 0} {
puts "Seeding Random number generator with $opt(seed)\n"
ns-random $opt(seed)
}
# create simulator instance
#remove-all-packet-headers
#add-packet-header IP TCP
set ns_ [new Simulator]
# set up for hierarchical routing
$ns_ node-config -addressType hierarchical
AddrParams set domain_num_ 2 ;# number of domains
lappend cluster_num 1 1 ;# number of clusters in each
domain
AddrParams set cluster_num_ $cluster_num
lappend eilastlevel 1 2 ;# number of nodes in each
cluster
AddrParams set nodes_num_ $eilastlevel ;# of each domain
set tracefd [open wireless2-out.tr w]
set namtrace [open wireless2-out.nam w]
$ns_ trace-all $tracefd
$ns_ namtrace-all-wireless $namtrace $opt(x) $opt(y)
# Create topography object
set topo [new Topography]
# define topology
$topo load_flatgrid $opt(x) $opt(y)
# create God
create-god [expr $opt(nn) + $num_bs_nodes]
#create wired nodes
set temp {0.0.0}
set wired_node [$ns_ node [lindex $temp 0]]
# configure for base-station node
$ns_ node-config -adhocRouting $opt(adhocRouting) \
-llType $opt(ll) \
-macType $opt(mac) \
-ifqType $opt(ifq) \
-ifqLen $opt(ifqlen) \
-antType $opt(ant) \
-propType $opt(prop) \
-phyType $opt(netif) \
-channelType $opt(chan) \
-topoInstance $topo \
-wiredRouting ON \
-agentTrace ON \
-routerTrace OFF \
-macTrace OFF
set temp {1.0.0 1.0.1}
# create base-station node
set BS [$ns_ node [lindex $temp 0]]
;#DelayBox [lindex $temp 0]]
$BS random-motion 0 ;# disable random motion
# provide some co-ord (fixed) to base station node
$BS set X_ 300.0
$BS set Y_ 200.0
$BS set Z_ 0.0
# create mobilenodes in the same domain as BS(0)
# note the position and movement of mobilenodes is as defined
# in $opt(sc)
# mobilenodes configuration
$ns_ node-config -wiredRouting OFF
set mob_node [ $ns_ node [lindex $temp 1]]
$mob_node base-station [AddrParams addr2id [$BS node-addr]]
$mob_node random-motion 0
$mob_node set X_ 300.0
$mob_node set Y_ 198.0
$mob_node set Z_ 0.0
#create links between wired and BS nodes
$ns_ duplex-link $wired_node $BS 5Mb 2ms DropTail
$ns_ duplex-link-op $wired_node $BS orient down
# setup TCP connections
set tcp1 [new Agent/TCP]
#$tcp1 set class_ 2
set sink1 [new Agent/TCPSink]
#$tcp1 fid_ 1
#$sink1 fid_ 1
$ns_ attach-agent $mob_node $tcp1
$ns_ attach-agent $wired_node $sink1
$ns_ connect $sink1 $tcp1
set exp [new Application/Traffic/Exponential]
$exp set packet_size_ 1000
$exp set burst_time_ 0.01
$exp set dle_time_ 0.01
$exp set rate 100kbps
$exp attach-agent $tcp1
$ns_ at 0.1 "$exp start"
#set ftp1 [new Application/FTP]
#$ftp1 attach-agent $tcp1
#$ns_ at $opt(ftp1-start) "$ftp1 start"
# create random variables
#global defaultRNG
#$defaultRNG seed 0
#set delay [new RandomVariable/Constant]; # delay ms
#$delay set val_ 20
#set bw [new RandomVariable/Constant]; # bw Mbps
#$bw set val_ 100
#set bw [new RandomVariable/Uniform]; # bw Mbps
#$bw set min_ 1
#$bw set max_ 20
#set loss_rate [new RandomVariable/Uniform]; # loss 0-1% loss
#$loss_rate set min_ 0
#$loss_rate set max_ 0.01
#$BS(0) add-rule [$n_src id] [$n_sink id] $recvr_delay $loss_rate $recvr_bw
# source connection-pattern and node-movement scripts
if { $opt(cp) == "" } {
puts "*** NOTE: no connection pattern specified."
set opt(cp) "none"
} else {
puts "Loading connection pattern..."
source $opt(cp)
}
if { $opt(sc) == "" } {
puts "*** NOTE: no scenario file specified."
set opt(sc) "none"
} else {
puts "Loading scenario file..."
source $opt(sc)
puts "Load complete..."
}
# Define initial node position in nam
for {set i 0} {$i < $opt(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 $mob_node 5
}
# Tell all nodes when the simulation ends
for {set i } {$i < $opt(nn) } {incr i} {
$ns_ at $opt(stop).0 "$mob_node reset";
}
$ns_ at $opt(stop).0 "$BS reset";
$ns_ at $opt(stop).0002 "puts \"NS EXITING...\" ; $ns_ halt"
$ns_ at $opt(stop).0001 "stop"
proc stop {} {
global ns_ tracefd namtrace
$ns_ flush-trace
close $tracefd
close $namtrace
exec nam wireless2-out.nam &
exit 0
}
# informative headers for CMUTracefile
puts $tracefd "M 0.0 nn $opt(nn) x $opt(x) y $opt(y) rp $opt(adhocRouting)"
puts $tracefd "M 0.0 sc $opt(sc) cp $opt(cp) seed $opt(seed)"
puts $tracefd "M 0.0 prop $opt(prop) ant $opt(ant)"
puts "Starting Simulation..."
$ns_ run
