Hi I tried to simulate sctp on ns-2.28.
I have readed the paper on http://www.lib.ncsu.edu/theses/available/etd-05162005-094333/. According to The FAQS of the paper , I modified two parts. 1.$ns_ node-config -wiredRouting OFF 2.commented out the line //Tcl::instance().evalf("\%s no-slot \%ld", name(), cl) in classifier.cc I created multihoming nodes(mobile node) in WLAN . while i execute ... it can not work. Then I configure the mobilenode using $ns_ node-config -multihome-core \ and $MH addif $MH_if0 $MH addif $MH_if1 instead of #$ns_ multihome-add-interface $MH $MH_if0 #$ns_ multihome-add-interface $MH $MH_if1 But Segmentation fault(core dump) occur. Before I have successed ... when use mobilenode without multihoming . But when add multihoming,the data can't be transfer. Please help me. Thank you very much. My script is as following. ######################### Mac/802_11 set dataRate_ 11Mb ;# 802.11b data rate ====================================================================== # Define options # ====================================================================== 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(x) 670 ;# x coordinate of topology set opt(y) 670 ;# y coordinate of topology set opt(seed) 0.0 ;# random seed set opt(ftp-start) 100.0 set opt(cbr-start) 150.0 set opt(stop) 250 ;# time to stop simulation # create simulator instance set ns_ [new Simulator] # set up for hierarchical routing $ns_ node-config -addressType hierarchical AddrParams set domain_num_ 3 lappend cluster_num 2 1 1 AddrParams set cluster_num_ $cluster_num lappend eilastlevel 1 1 2 1 AddrParams set nodes_num_ $eilastlevel set tracefd [open msctp-out.tr w] set namtrace [open msctp-out.nam w] $ns_ use-newtrace $ns_ trace-all $tracefd $ns_ namtrace-all-wireless $namtrace $opt(x) $opt(y) # Here the topography object define set topo [new Topography] $topo load_flatgrid $opt(x) $opt(y) create-god [expr $opt(nn) + 2] #Here wired nodes set temp {0.0.0 0.1.0} for {set i 0} {$i < $num_wired_nodes} {incr i} { set W($i) [$ns_ node [lindex $temp $i]] } # Configure for ForeignAgent and HomeAgent nodes $ns_ node-config -mobileIP ON \ -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 $topo \ -wiredRouting ON \ -agentTrace ON \ -routerTrace OFF \ -macTrace ON set HA [$ns_ node 1.0.0] $HA random-motion 0 # Position (fixed) for base-station nodes (HA & FA). $HA set X_ 1.000000000000 $HA set Y_ 2.000000000000 $HA set Z_ 0.000000000000 # Configure a mobilenode $ns_ node-config -multihome-core \ -wiredRouting OFF \ -mobileIP OFF \ -macTrace ON set MH [$ns_ node 0.0.0] set MH_if0 [$ns_ node 1.0.1] $MH addif $MH_if0 #$ns_ multihome-add-interface $MH $MH_if0 set fid_ 2 set HAaddress [AddrParams addr2id [$HA node-addr]] [$MH_if0 set regagent_] set home_agent_ $HAaddress # movement of the Mobile Node $MH set Z_ 0.000000000000 $MH set Y_ 2.000000000000 $MH set X_ 2.000000000000 # links between wired and BaseStation nodes $ns_ duplex-link $W(0) $W(1) 10Mb 5ms DropTail $ns_ duplex-link $W(1) $HA 5Mb 2ms DropTail $ns_ duplex-link-op $W(0) $W(1) orient down $ns_ duplex-link-op $W(1) $HA orient left-down # setup SCTP connections between a wired node and the MobileHost $ns_ node-config -mobileIP OFF set sctp1 [new Agent/SCTP] $sctp1 set class_ 2 $ns_ multihome-attach-agent $MH_if0 $sctp1 set sink1 [new Agent/SCTP] $ns_ attach-agent $W(0) $sink1 $ns_ connect $sctp1 $sink1 $sctp1 force-source $MH_if0 $ns_ at 200.0 "$sctp1 force-source $MH_if0" $sctp1 set fid_ 1 set ftp [new Application/FTP] $ftp attach-agent $sctp1 $ftp set packet_size_ 1000 $ftp set rate_ 1mb $ns_ at $opt(ftp-start) "$ftp start" $ns_ at $opt(stop).0 "$HA reset"; $ns_ at $opt(stop).0002 "puts \"NS EXITING...\" ; $ns_ halt" $ns_ at $opt(stop).0001 "stop" $ns_ run -- 電腦與通訊網路實驗室 網路郵局 Open WebMail ------- End of Forwarded Message -------
