Hello , Below is the topology that i built for a wired-cum-wireless topology which have TCP and UDP sources connected to the left end of router. The right end of router is connected to a BaseStation Node.
The TCP + UDP sinks are wireless nodes(no links) connected to the right of BaseStationNode. When am simulating this scenario, with TCP sources having FTP Agents works fine. The problem is with UDP sources, the CBR cant be run. It shows the below error. ERROR MESSAGE: [r...@localhost Desktop]# ns roja.tcl num_nodes is set 5 INITIALIZE THE LIST xListHead INITIALIZE THE LIST xListHead Starting Simulation... channel.cc:sendUp - Calc highestAntennaZ_ and distCST_ highestAntennaZ_ = 1.5, distCST_ = 550.0 SORTING LISTS ...DONE! SORTING LISTS ...DONE! --- Classfier::no-slot{} default handler (tcl/lib/ns-lib.tcl) --- _o36: no target for slot 1023 _o36 type: Classifier/Addr content dump: classifier _o36 0 offset 22 shift 1023 mask 1 slots slot 0: _o37 (Classifier/Addr) ---------- Finished standard no-slot{} default handler ---------- * "Simulation Script"* : Please give brief explanation about the bold text in the script. ### This simulation is an example of combination of wired and wireless ### topologies. global opt set opt(chan) Channel/WirelessChannel set opt(prop) Propagation/TwoRayGround set opt(netif) Phy/WirelessPhy set opt(mac) Mac/802_11 set opt(ifq) Queue/DropTail/PriQueue set opt(ll) LL set opt(ant) Antenna/OmniAntenna set opt(x) 670 set opt(y) 670 set opt(ifqlen) 50 set opt(tr) wired-and-wireless.tr set opt(namtr) wired-and-wireless.nam set opt(nn) 4 set opt(adhocRouting) DSDV set opt(cp) "" set opt(sc) "../mobility/scene/scen-3-test" set opt(stop) 50 set num_wired_nodes 5 set num_bs_nodes 1 set ns_ [new Simulator] # set up for hierarchical routing $ns_ node-config -addressType hierarchical AddrParams set domain_num_ 2 lappend cluster_num 1 1 AddrParams set cluster_num_ $cluster_num lappend eilastlevel 5 5 AddrParams set nodes_num_ $eilastlevel $ns_ use-newtrace set tracefd [open $opt(tr) w] $ns_ trace-all $tracefd set namtracefd [open $opt(namtr) w] $ns_ namtrace-all $namtracefd set topo [new Topography] $topo load_flatgrid $opt(x) $opt(y) # god needs to know the number of all wireless interfaces *create-god [expr $opt(nn) + $num_bs_nodes]* #create wired nodes set temp {0.0.0 0.0.1 0.0.2 0.0.3 0.0.4} *for {set i 0} {$i < $num_wired_nodes} {incr i} {* *set W($i) [$ns_ node [lindex $temp $i]]* } #create a router node #set r0 [$ns_ node] $ns_ node-config -adhocRouting $opt(adhocRouting) \ -llType $opt(ll) \ -macType $opt(mac) \ -ifqType $opt(ifq) \ -ifqLen $opt(ifqlen) \ -antType $opt(ant) \ -propInstance [new $opt(prop)] \ -phyType $opt(netif) \ -channel [new $opt(chan)] \ -topoInstance $topo \ -wiredRouting ON \ -agentTrace ON \ -routerTrace OFF \ -macTrace OFF *set temp {1.0.0 1.0.1 1.0.2 1.0.3 1.0.4 1.0.5} * *set BS(0) [$ns_ node [lindex $temp 0]]* $BS(0) random-motion 0 $BS(0) set X_ 1.0 $BS(0) set Y_ 2.0 $BS(0) set Z_ 0.0 #configure for mobilenodes $ns_ node-config -adhocRouting $opt(adhocRouting) \ -llType $opt(ll) \ -macType $opt(mac) \ -ifqType $opt(ifq) \ -ifqLen $opt(ifqlen) \ -antType $opt(ant) \ -propInstance [new $opt(prop)] \ -phyType $opt(netif) \ -channel [new $opt(chan)] \ -topoInstance $topo \ -wiredRouting OFF \ -agentTrace ON \ -routerTrace OFF \ -macTrace OFF *for {set j 0} {$j < $opt(nn)} {incr j} {* *set node_($j) [ $ns_ node [lindex $temp \* *[expr $j+1]] ]* *$node_($j) base-station [AddrParams addr2id [$BS(0) node-addr]]* } #create links between wired and BS nodes $ns_ duplex-link $W(0) $W(4) 5Mb 2ms DropTail $ns_ duplex-link $W(1) $W(4) 5Mb 2ms DropTail $ns_ duplex-link $W(2) $W(4) 5Mb 2ms DropTail $ns_ duplex-link $W(3) $W(4) 5Mb 2ms DropTail $ns_ duplex-link $W(4) $BS(0) 5Mb 2ms DropTail #$ns_ duplex-link-op $W(3) $W(1) orient down #$ns_ duplex-link-op $W(4) $BS(0) orient left-down #$ns_ duplex-link-op $W(5) $BS(1) orient right-down # setup TCP connections set tcp0 [new Agent/TCP] $tcp0 set class_ 2 set sink0 [new Agent/TCPSink] $ns_ attach-agent $W(0) $tcp0 $ns_ attach-agent $node_(0) $sink0 $ns_ connect $tcp0 $sink0 set ftp0 [new Application/FTP] $ftp0 attach-agent $tcp0 $ns_ at 10.0 "$ftp0 start" # setup TCP connections set tcp1 [new Agent/TCP] $tcp0 set class_ 2 set sink1 [new Agent/TCPSink] $ns_ attach-agent $W(1) $tcp1 $ns_ attach-agent $node_(1) $sink1 $ns_ connect $tcp1 $sink1 set ftp1 [new Application/FTP] $ftp1 attach-agent $tcp1 $ns_ at 20.0 "$ftp1 start" #set up UDP connections set udp0 [new Agent/UDP] $udp0 set class_ 1 set null0 [new Agent/Null] $ns_ attach-agent $W(2) $udp0 $ns_ attach-agent $node_(2) $null0 set cbr0 [new Application/Traffic/CBR] $cbr0 set packetSize_ 500 $cbr0 set interval_ 0.005 $cbr0 attach-agent $udp0 #$ns_ at 15.0 "$cbr0 start" #set up UDP connections set udp1 [new Agent/UDP] $udp1 set class_ 1 set null1 [new Agent/Null] $ns_ attach-agent $W(3) $udp1 $ns_ attach-agent $node_(3) $null1 set cbr1 [new Application/Traffic/CBR] $cbr1 set packetSize_ 500 $cbr1 set interval_ 0.005 $cbr1 attach-agent $udp1 #$ns_ at 25.0 "$cbr1 start" for {set i 0} {$i < $opt(nn)} {incr i} { $ns_ initial_node_pos $node_($i) 20 } for {set i } {$i < $opt(nn) } {incr i} { $ns_ at $opt(stop).0000010 "$node_($i) reset"; } $ns_ at $opt(stop).0000010 "$BS(0) reset"; $ns_ at $opt(stop).1 "puts \"NS EXITING...\" ; $ns_ halt" puts "Starting Simulation..." $ns_ at 0.0 "$W(0) label TCPSource1" $ns_ at 0.1 "$W(1) label TCPSource2" $ns_ at 0.2 "$W(2) label UDPSource1" $ns_ at 0.3 "$W(3) label UDPSource2" $ns_ at 0.4 "$W(4) label Router" #$ns_ at 0.5 "$node_(4) label BS" $ns_ at 0.6 "$node_(0) label TCPSink1" $ns_ at 0.7 "$node_(1) label TCPSink2" $ns_ at 0.8 "$node_(2) label UDPnull1" $ns_ at 0.9 "$node_(3) label UDPnull2" $ns_ run