【正文】 stall Inter now – gcc version is new new ? install from local directory – – installation problems ? 完成安裝後， 並重新啟動(dòng) cygwin視窗，就會(huì)如上圖所示，產(chǎn)生一個(gè) home 目錄 並且把一些設(shè)定檔案放到 home目錄下 若是沒(méi)辦法產(chǎn)生如上圖所示，而是出現(xiàn)如 bash$這樣的問(wèn)題 ,可以 1)重新安裝 windows system 2)安裝完後馬上安裝 cygwin + ns2 3)裝完 ns2後 ,再裝其他的軟體 ,如 service pack, office等等 NS2 installation ? ns2 version ( for my provided cygwin) – (need patch) ? – cd – patch p0 ~/ – $./install – , , – myNS2—enhanced (It includes TKN EDCF module, NOAH routing, MFlood, CSFQ, Poisson traffic, wireless random uniform and GE error model, and tcldebug.) – ns2 support ? – ET/SNRT/BERbased PHY models – multirate – HCCA and EDCA ? 一個(gè) cygwin上面，可以同時(shí)安裝好幾個(gè)版本的 ns，不是只能安裝一個(gè) export NS_HOME=`pwd`/ export PATH=$NS_HOME/:$NS_HOME/:$NS_HOME/bin:$PATH export LD_LIBRARY_PATH=$NS_HOME/:$NS_HOME/:\ $NS_HOME/:$NS_HOME/lib:$LD_LIBRARY_PATH export TCL_LIBRARY=$NS_HOME/但不一定所有的電腦，設(shè)定路徑後一定會(huì)有效，所以當(dāng)路徑設(shè)定無(wú)效時(shí)，可以把 拷貝到要模擬的 tcl script同一目錄下 $cd $cp ~/abc $cd ~/abc $./ 測(cè)試你安裝的 ns2 2. $cd $./validate How to insert a new module into your NS2? ? Take NOAH as an example – Stepbystep installation instructions for add noah/ \ to OBJ_CC and tcl/mobility/ \ to NS_TCL_LIB noah/noah.{h,cc} add and to a new subdirectory noah/ tcl/mobility/ add to tcl/mobility/ tcl/lib/ line 191: add source ../mobility/ line 603ff: add NOAH { set ragent [$self createnoahagent $node] } line 768ff: add Simulator instproc createnoahagent { node } { Create a noah routing agent for this node set ragent [new Agent/NOAH] setup address (supports hieraddr) for noah agent and mobilenode set addr [$node nodeaddr] $ragent addr $addr $ragent node $node if [Simulator set mobile_ip_] { $ragent portdmux [$node demux] } $node addr $addr $node set ragent_ $ragent return $ragent } $cd $make set ns_ [new Simulator] $ns_ nodeconfig addressType hierarchical AddrParams set domain_num_ 2 lappend cluster_num 1 1 AddrParams set cluster_num_ $cluster_num lappend eilastlevel 1 2 AddrParams set nodes_num_ $eilastlevel set tracefd [open w] $ns_ traceall $tracefd set topo [new Topography] $topo load_flatgrid 100 100 set god_ [creategod 2] set W(0) [$ns_ node ] set chan_ [new Channel/WirelessChannel] $ns_ nodeconfig adhocRouting NOAH \ llType LL \ macType Mac/802_11 \ ifqType Queue/DropTail/PriQueue \ ifqLen 50 \ antType Antenna/OmniAntenna \ propType Propagation/TwoRayGround \ phyType Phy/WirelessPhy \ channel $chan_ \ topoInstance $topo \ wiredRouting ON\ agentTrace OFF \ routerTrace OFF \ macTrace OFF set BA [$ns_ node ] $ns_ nodeconfig wiredRouting OFF set MH(0) [$ns_ node ] $MH(0) randommotion 0 $MH(0) set basestation [AddrParams addr2id [$BA nodeaddr]] $BA set X_ $BA set Y_ $BA set Z_ $MH(0) set X_ $MH(0) set Y_ $MH(0) set Z_ $ns_ duplexlink $W(0) $BA 10Mb 10ms DropTail set udp [new Agent/UDP] $ns_ attachagent $W(0) $udp set null [new Agent/Null] $ns_ attachagent $MH(0) $null $ns_ connect $udp $null set cbr [new Application/Traffic/CBR] $cbr attachagent $udp $cbr set type_ CBR $cbr set packet_size_ 1000 $cbr set rate_ 1Mb $cbr set random_ false $ns_ at $cbr start $ns_ at $cbr stop $ns_ at $MH(0) reset。 } int qlimBytes = qlim_ * mean_pktsize_。 } else { drop(p)。 time to stop simulation set opt(trns) set opt(trnam) Mac/802_11 set dataRate_ Mac/802_11 set RTSThreshold_ 3000 set ns_ [new Simulator] $ns_ nodeconfig addressType hierarchical AddrParams set domain_num_ 3 。 $ns_ at $opt(stop).0002 puts \NS EXITING...\ 。 time = $2。 seq_no = $11。 } } END { 當(dāng)資料列全部讀取完後，開始計(jì)算有效封包的端點(diǎn)到端點(diǎn)延遲時(shí)間 for ( packet_id = 0。 Schedule Record after $time interval sec } proc finish {} { global ns nf nd f0 f1 f2 $ns flushtrace close $nf close $nd close $f0 close $f1 close $f2 Plot Recorded Statistics exec xgraph geometry 800x400 amp。 } protected: virtual void start()。 static class CBRTrafficClass : public TclClass { public: CBRTrafficClass() : TclClass(Application/Traffic/CBR) {} TclObject* create(int, const char*const*) { return (new CBR_Traffic())。 bind(maxpkts_, amp。 timeout()。 } void TrafficGenerator::timeout() { if (! running_) return。 virtual void sendmsg(int nbytes, const char *flags = 0) { sendmsg(nbytes, NULL, flags)。 UdpAgent::UdpAgent() : Agent(PT_UDP), seqno_(1) { bind(packetSize_, amp。 n = nbytes / size_。 while (n 0) { p = allocpkt()。 (0 ==strcmp(flags, NEW_BURST))) rhflags() |= RTP_M。 rhseqno() = ++seqno_。 } void UdpAgent::recv(Packet* pkt, Handler*) { if (app_ ) { // If an application is attached, pass the data to the app hdr_cmn* h = hdr_cmn::access(pkt)。 tcl = Tcl::instance()。 strcpy((char*)datadata(), argv[3])。 char BWfile[100]。 UdpAgent::UdpAgent()。 } double local_time = Scheduler::instance().clock()。 if (n 0) { …………………………………………………………………………….. hdr_cmn::access(p)sendtime_ = local_time。 target_recv(p)。 if (nbytes == 1) { printf(Error: sendmsg() for UDP should not be 1\n)。 mUdpAgent::mUdpAgent() : id_(0), openfile(0) { bind(packetSize_, amp。 virtual int mand(int argc, const char*const* argv)。 return (TCL_OK)。 hdr_ip* iph = hdr_ip::access(pkt)。 target_re