{"id":69499,"date":"2026-01-31T19:16:55","date_gmt":"2026-01-31T11:16:55","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/69499.html"},"modified":"2026-01-31T19:16:55","modified_gmt":"2026-01-31T11:16:55","slug":"ns-3%e4%bb%bf%e7%9c%9f%e4%b9%8b%e5%ba%94%e7%94%a8%e5%b1%82%ef%bc%88%e4%b8%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/69499.html","title":{"rendered":"ns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09"},"content":{"rendered":"

\u76ee\u5f55<\/p>\n

\u4e00\u3001\u67b6\u6784\u4e0e\u811a\u672c<\/p>\n

1.1 \u6982\u51b5<\/p>\n

1.2 \u5efa\u7acb\u4e00\u4e2aUDP\u8fde\u63a5<\/p>\n

\u4e8c\u3001\u5185\u7f6e\u5e94\u7528：Application<\/p>\n

2.1\u5185\u7f6e\u5e94\u7528<\/p>\n

2.2 \u5e94\u7528\u5c42\u534f\u8bae\u52a9\u624b\u7c7b\u4f7f\u7528\u7684\u57fa\u672c\u6b65\u9aa4：<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01. \u521b\u5efa\u52a9\u624b\u7c7b\u5bf9\u8c61：\u6307\u5b9a\u4e24\u4e2a\u5f62\u53c2<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2. \u914d\u7f6e\u4e13\u5c5e\u5c5e\u6027（\u53ef\u9009）<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3. \u5728\u6307\u5b9a\u7ed3\u70b9\u4e0a\u5b89\u88c5\u5e94\u7528\u5c42\u534f\u8bae<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a04. \u8bbe\u7f6e\u5e94\u7528\u5c42\u534f\u8bae\u7684\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5. \u914d\u7f6etrace\u53d8\u91cf（\u53ef\u9009）<\/p>\n

2.3 \u5206\u7ec4\u4ea7\u751f\u5668<\/p>\n

2.3.1. \u5206\u7ec4\u63a5\u6536\u5668：PacketSink<\/p>\n

～examples\/tcp\/tcp-bulk-send.cc<\/p>\n

\u7a0b\u5e8f\u529f\u80fd\u548c\u6267\u884c\u903b\u8f91<\/p>\n

～examples\/routing\/simple-global-routing.cc<\/p>\n

\u7a0b\u5e8f\u529f\u80fd\u4e0e\u6267\u884c\u903b\u8f91<\/p>\n

～src\/csma\/examples\/csma-packet-socket.cc<\/p>\n

\u7a0b\u5e8f\u529f\u80fd\u4e0e\u6267\u884c\u903b\u8f91<\/p>\n

\n<\/p>\n

\u5728\u811a\u672c\u4e2d\u521b\u5efa\u5e94\u7528\u5c42\u534f\u8bae\u5b9e\u9645\u4e0a\u5b8c\u6210\u7684\u662f\u5236\u5b9a\u5206\u7ec4\u6536\u53d1\u89c4\u5219\u548c\u8c03\u7528\u5957\u63a5\u5b57（API）\u8fd9\u4e24\u90e8\u5206\u64cd\u4f5c\u3002<\/p>\n

\u4e00\u3001\u67b6\u6784\u4e0e\u811a\u672c<\/h2>\n

1.1 \u6982\u51b5<\/h3>\n

ns-3\u5e94\u7528\u5c42\u534f\u8bae\u4e3b\u8981\u8d1f\u8d23\u6570\u636e\u5206\u7ec4\u7684\u53d1\u9001\u3001\u5904\u7406\u548c\u63a5\u6536，\u53ef\u4ee5\u628a\u5176\u770b\u6210\u7269\u7406\u7f51\u7edc\u4e2d\u5e94\u7528\u7a0b\u5e8f\u7684\u7f51\u7edc\u4f20\u8f93\u90e8\u5206<\/p>\n

\u5728\u5e94\u7528\u5c42\u534f\u8bae\u4e2d，\u5206\u7ec4\u751f\u6210\u90e8\u5206\u8d1f\u8d23\u6309\u7167\u4e00\u5b9a\u7684\u7edf\u8ba1\u89c4\u5219\u53d1\u9001\u5206\u7ec4；\u5206\u7ec4\u5904\u7406\u90e8\u5206\u8d1f\u8d23\u63a5\u6536\u6765\u81ea\u4e0b\u5c42\u534f\u8bae\u7684\u5206\u7ec4\u5e76\u5bf9\u5206\u7ec4\u76f8\u5173\u4fe1\u606f\u8fdb\u884c\u8bb0\u5f55\u3002<\/p>\n

\u5728ns-3\u4e2d，\u7f51\u7edc\u5957\u63a5\u5b57（network socket）\u3010\u53ef\u770b\u4f5c\u4e00\u79cd\u5e94\u7528\u7a0b\u5e8f\u63a5\u53e3\u3011\u53ef\u88ab\u5206\u4e3a\u4e24\u5927\u7c7b：<\/p>\n

  • \u57fa\u4e8ePOSIX\u5957\u63a5\u5b57\u7684\u539f\u8bed\u51fd\u6570，\u4e3b\u8981\u7528\u4e8e\u5efa\u7acb\u4e0b\u5c42\u534f\u8bae\u8fde\u63a5\u3001\u53d1\u9001\u548c\u63a5\u53d7\u5206\u7ec4；<\/li>\n
  • \u56de\u8c03\u51fd\u6570，\u4e3b\u8981\u7528\u4e8e\u63a5\u6536\u6765\u81ea\u4e0b\u5c42\u534f\u8bae\u7684\u4e8b\u4ef6\u901a\u77e5<\/li>\n

    \"\"<\/p>\n

    \u56fe1-1 ns-3\u5e94\u7528\u5c42\u8f6f\u4ef6\u67b6\u6784<\/p>\n

    ns-3\u652f\u6301\u76844\u79cd\u5957\u63a5\u5b57\u7c7b\u578b：\u4e0e\u4f20\u8f93\u5c42\u534f\u8bae\u4ea4\u4e92\u7684\u6d41\u5957\u63a5\u5b57（stream packet）\u3001\u6570\u636e\u62a5\u6587\u5957\u63a5\u5b57（datagram socket）\u3001\u4e0e\u7f51\u7edc\u5c42\u534f\u8bae\u4ea4\u4e92\u7684\u539f\u59cb\u5957\u63a5\u5b57（raw socket）\u3001\u4e0e\u94fe\u8def\u5c42\u4ea4\u4e92\u7684Packet\u5957\u63a5\u5b57（packet socket）\u3002<\/p>\n

    1.2 \u5efa\u7acb\u4e00\u4e2aUDP\u8fde\u63a5<\/h3>\n
  • \n

    \u5229\u7528UdpClient\u548cUdpServer\u5e94\u7528\u534f\u8bae\u7684\u52a9\u624b\u7c7b\u6765\u5efa\u7acb<\/h4>\n<\/li>\n

    \/\/\u521b\u5efa\u5ba2\u6237\u7aef
    \nUdpClientHelper client(
    \n serverIpv4Address,serverPort);
    \nclient.Install(clientNode);<\/p>\n

    \/\/\u521b\u5efa\u670d\u52a1\u5668\u7aef
    \nUdpServerHelper server(serverPort);
    \nserver.Install(serverNode); <\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2.\u4e0d\u4f7f\u7528\u52a9\u624b\u7c7b\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0\u4e0eUdpClient\u548cUdpServer\u76f8\u7c7b\u4f3c\u7684\u529f\u80fd<\/h4>\n

    \/\/\u521b\u5efa\u5ba2\u6237\u7aef
    \nclient=Socket::CreateSocket(
    \n clientNode,
    \n "ns3::UdpSocketFactory");
    \nclient->Bind();
    \nclient->Connect(serverSocketAddress);
    \nclient->Send(pakcet);<\/p>\n

    \/\/\u521b\u5efa\u670d\u52a1\u5668\u7aef
    \nserver=Socket::CreateSocket(
    \n serverNode,
    \n "ns3::UdpSocketFactory");
    \nserver->Bind(serverSocketAddress);
    \nserver->SetRecvCallback(MakeCallback(&ReceivePacket)); <\/p>\n

    \u4e8c\u3001\u5185\u7f6e\u5e94\u7528：Application<\/h2>\n

    2.1\u5185\u7f6e\u5e94\u7528<\/h3>\n

    \u5185\u7f6e\u5e94\u7528\u53ef\u4ee5\u5206\u4e3a\u4e24\u7c7b：<\/p>\n

      \n
    • \u5206\u7ec4\u4ea7\u751f\u5668（packet generator）：\u6839\u636e\u4e0d\u540c\u7684\u7edf\u8ba1\u6a21\u578b\u4ea7\u751f\u6570\u636e\u5206\u7ec4，\u5e76\u4e0d\u5177\u6709\u4fe1\u4ee4\u4ea4\u4e92\u7b49\u884c\u4e3a<\/li>\n
    • \u5177\u6709\u4fe1\u4ee4\u4ea4\u4e92\u884c\u4e3a\u7684\u5185\u7f6e\u5e94\u7528<\/li>\n<\/ul>\n

      \u88682-1 \u5185\u7f6e\u5e94\u7528\u5c42\u534f\u8bae<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      \u5e94\u7528\u5c42\u534f\u8bae<\/td>\n\u652f\u6301\u7684\u4e0b\u5c42\u534f\u8bae\u79cd\u7c7b<\/td>\nC<\/td>\nS<\/td>\n\u652f\u6301\u7684\u5bf9\u7aef\u534f\u8bae<\/td>\n<\/tr>\n
      application\u6a21\u5757<\/td>\n<\/tr>\n
      PacketSink<\/td>\n\u6240\u6709<\/td>\n<\/td>\n\u221a<\/td>\n\n

      OnOffApplication<\/p>\n

      BulkSendAppliction<\/p>\n<\/td>\n<\/tr>\n

      OnOffApplication<\/td>\n\u6240\u6709<\/td>\n\u221a<\/td>\n<\/td>\nPacketSlink<\/td>\n<\/tr>\n
      BUlkSendApplication<\/td>\nTCP<\/td>\n\u221a<\/td>\n<\/td>\n<\/tr>\n
      UdpServer<\/td>\nUDP<\/td>\n<\/td>\n\u221a<\/td>\nUdpClient<\/td>\n<\/tr>\n
      UdpClient<\/td>\n\u221a<\/td>\n<\/td>\nUdpServer<\/td>\n<\/tr>\n
      UdpTraceClient<\/td>\n\u221a<\/td>\n<\/td>\n<\/tr>\n
      UdpEchoServer<\/td>\n<\/td>\n\u221a<\/td>\nUdpEchoClient<\/td>\n<\/tr>\n
      UdpEchoClient<\/td>\n\u221a<\/td>\n<\/td>\nUdpEchoServer<\/td>\n<\/tr>\n
      network\u6a21\u5757<\/td>\n<\/tr>\n
      PacketSocketServer<\/td>\nNetDevice<\/td>\n<\/td>\n\u221a<\/td>\nPacketSocketClient<\/td>\n<\/tr>\n
      PacketSocketClient<\/td>\n\u221a<\/td>\n<\/td>\nPacketSocketServer<\/td>\n<\/tr>\n
      internet-app\u6a21\u5757<\/td>\n<\/tr>\n
      DhcpServer<\/td>\nIPv4<\/td>\n<\/td>\n\u221a<\/td>\nDhcpClient<\/td>\n<\/tr>\n
      DhcpClient<\/td>\n\u221a<\/td>\n<\/td>\nDhcpServer<\/td>\n<\/tr>\n
      V4Ping<\/td>\n\u221a<\/td>\n\u221a<\/td>\nV4Ping<\/td>\n<\/tr>\n
      Ping6<\/td>\nIPv6<\/td>\n\u221a<\/td>\n\u221a<\/td>\nPing6<\/td>\n<\/tr>\n
      Radvd<\/td>\n\u221a<\/td>\n\u221a<\/td>\n\n

      Radvd<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      2.2 \u5e94\u7528\u5c42\u534f\u8bae\u52a9\u624b\u7c7b\u4f7f\u7528\u7684\u57fa\u672c\u6b65\u9aa4：<\/h3>\n

      \u4ee5PacketSink\u548cBulkSendApplication\u4e3a\u4f8b：\u5728\u7ed3\u70b91（nodes.Get(1),nodes\u662f\u4e00\u4e2a\u7ed3\u70b9\u5bb9\u5668）\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2aBulkSendApplication\u5e94\u7528（\u5ba2\u6237\u7aef）\u3002\u8fd9\u4e2a\u5e94\u7528\u5411\u4f4d\u4e8e\u7ed3\u70b90\u7684PacketSink\u5e94\u7528（\u670d\u52a1\u5668\u7aef）\u53d1\u9001TCP\u5206\u7ec4<\/p>\n

      \/\/\u670d\u52a1\u5668\u7aef<\/p>\n

      \/\/\u521b\u5efa\u52a9\u624b\u7c7b\u5bf9\u8c61\u5e76\u914d\u7f6e\u5fc5\u5907\u5c5e\u6027
      \nPacketSinkHelper sin(
      \n \/\/\u4e0b\u5c42\u534f\u8bae\u79cd\u7c7b（TCP\u534f\u8bae）
      \n "ns3::TcpSocketFactory",
      \n \/\/\u672c\u5730\u76d1\u542cIP\u5730\u5740（\u5168\u96f6\u5730\u5740）\u53ca\u7aef\u53e3\u5c5e\u6027
      \n InetSocketAddress(Ipv4Address::GetAny(),9));
      \n\/\/\u5728\u7ed3\u70b9\u4e2d\u5b89\u88c5\u670d\u52a1\u5668\u7aef\u5e94\u7528\u5c42\u534f\u8bae
      \nApplicationContainer sinkApps=
      \nsink.Install(nodes.Get(0));
      \n\/\/\u8bbe\u7f6e\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4\u5c5e\u6027（\u6279\u91cf\u8bbe\u7f6e）
      \nsinkApps.Start(Seconds(0.0));
      \nsinkApps.Stop(Seconds(10.0));<\/p>\n

      \/\/\u5ba2\u6237\u7aef<\/p>\n

      \/\/\u521b\u5efa\u52a9\u624b\u7c7b\u5bf9\u8c61\u5e76\u914d\u7f6e\u5fc5\u5907\u5c5e\u6027
      \nBulkSendHelper source(
      \n \/\/\u4e0b\u5c42\u534f\u8bae\u79cd\u7c7b
      \n "ns3::TcpSocketFactory",
      \n \/\/\u670d\u52a1\u5668IP\u5730\u5740\u53ca\u7aef\u53e3\u5c5e\u6027
      \n InetSocketAddress("10.0.0.1",9));
      \n\/\/\u8bbe\u7f6e\u5176\u4ed6\u5c5e\u6027（\u5206\u7ec4\u5927\u5c0fSendSize\u5c5e\u6027）
      \nsource.SetAttribute(
      \n "SendSize",
      \n UintegerValue(1024);
      \n\/\/\u5728\u7ed3\u70b9\u4e2d\u5b89\u88c5\u5ba2\u6237\u7aef\u5e94\u7528\u5c42\u534f\u8bae
      \nApplicationContainer sourceApps=
      \nsorce.Install(nodes.Get(1));
      \n\/\/\u8bbe\u7f6e\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4（\u6279\u91cf\u8bbe\u7f6e）
      \nsourceApps.Start(Seconds(1.0));
      \nsourceApps.Stop(Seconds(10.0)); <\/p>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01. \u521b\u5efa\u52a9\u624b\u7c7b\u5bf9\u8c61：\u6307\u5b9a\u4e24\u4e2a\u5f62\u53c2<\/h4>\n
        \n
      • \u4e0b\u5c42\u534f\u8bae（\u5957\u63a5\u5b57）\u79cd\u7c7b：ns3::TcpSocketFactory(TCP)\u3001ns3::UdpSocketFactory(UDP)\u3001ns3::Ipv4RawSocketFactory(IPv4)\u3001ns3::Ipv6RawSocketFactory(IPv6)\u3001ns3::PacketSocketFactory(\u94fe\u8def\u5c42\u534f\u8bae)；<\/li>\n
      • \u5957\u63a5\u5b57\u5730\u5740：\u5bf9\u4e8e\u5ba2\u6237\u7aef\u5e94\u7528，\u5957\u63a5\u5b57\u5730\u5740\u4e3a\u53d1\u9001\u5206\u7ec4\u7684\u76ee\u6807\u5730\u5740，\u5373\u670d\u52a1\u5668\u7aef\u5730\u5740；\u5bf9\u4e8e\u670d\u52a1\u5668\u7aef\u5e94\u7528，\u8be5\u5730\u5740\u4e3a\u672c\u5730\u7684\u76d1\u542c\u5730\u5740\u3002\u4e25\u683c\u5730\u8bf4，\u8fd9\u4e24\u4e2a\u5957\u63a5\u5b57\u5730\u5740\u5fc5\u987b\u662f\u76f8\u540c\u7684，\u4f46\u5728\u5b9e\u9645\u4e2d，\u670d\u52a1\u5668\u7aef\u76d1\u542c\u5957\u63a5\u5b57\u4e2d\u7684IP\u5730\u5740\u5e38\u5e38\u91c7\u7528\u5168\u96f6IP\u5730\u5740，\u8fd9\u6837\u670d\u52a1\u5668\u7aef\u53ef\u4ee5\u63a5\u6536\u6240\u6709\u53d1\u5f80\u6307\u5b9a\u7aef\u53e3\u7684\u5206\u7ec4，\u800c\u65e0\u8bba\u5176\u76ee\u7684\u7684\u5730\u5740\u662f\u4ec0\u4e48\u3002\u5168\u96f6\u5730\u5740\u53ef\u4ee5\u901a\u8fc7Ipv4Address::GetAny()\u548cIpv6Address::GetAny()\u51fd\u6570\u83b7\u53d6\u3002<\/li>\n<\/ul>\n

        \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2. \u914d\u7f6e\u4e13\u5c5e\u5c5e\u6027（\u53ef\u9009）<\/h4>\n
          \n
        • \u914d\u7f6eApplication\u5b50\u7c7b\u4e2d\u7684\u5c5e\u6027<\/li>\n<\/ul>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3. \u5728\u6307\u5b9a\u7ed3\u70b9\u4e0a\u5b89\u88c5\u5e94\u7528\u5c42\u534f\u8bae<\/h4>\n
            \n
          • ns-3\u4e2d，\u534f\u8bae\u7684\u5b89\u88c5\u64cd\u4f5c\u901a\u8fc7\u52a9\u624b\u7c7b\u4e2d\u7684 Install（）\u51fd\u6570 \u5b8c\u6210；<\/li>\n
          • Install（）\u51fd\u6570\u7684\u5f62\u53c2\u53ef\u4ee5\u662f\u4e00\u4e2a\u7ed3\u70b9\u6307\u9488（Ptr<Node> node)，\u4e5f\u53ef\u4ee5\u662f\u5305\u542b\u591a\u4e2a\u7ed3\u70b9\u6307\u9488\u7684\u7ed3\u70b9\u5bb9\u5668（NodeContainer）；<\/li>\n
          • \u521b\u5efa\u597d\u7684\u5e94\u7528\u5c42\u534f\u8bae\u5bf9\u8c61\u88ab\u653e\u5728\u5e94\u7528\u5c42\u5bb9\u5668 ApplicationContainer \u4e2d\u8fd4\u56de<\/li>\n<\/ul>\n

            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a04. \u8bbe\u7f6e\u5e94\u7528\u5c42\u534f\u8bae\u7684\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4<\/h4>\n
              \n
            • \u5728\u8bbe\u7f6e\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4\u65f6，\u4e00\u822c\u79c9\u627f\u201c\u670d\u52a1\u5668\u7aef\u5148\u542f\u52a8，\u540e\u505c\u6b62\u201d\u7684\u89c4\u5219<\/li>\n
            • ns-3\u811a\u672c\u65e2\u53ef\u4ee5\u4f7f\u7528\u5e94\u7528\u5bb9\u5668\u6279\u91cf\u8bbe\u7f6e\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4，\u4e5f\u53ef\u4ee5\u4e3a\u6bcf\u4e00\u4e2a\u5e94\u7528\u5c42\u534f\u8bae\u5206\u522b\u8bbe\u7f6e\u65f6\u95f4<\/li>\n<\/ul>\n

              \/\/\u6279\u91cf\u8bbe\u7f6e
              \nsinkApps.Start(Seconds(0.0));
              \nsinkApps.Stop(Seconds(10.0));
              \n\/\/\u5355\u72ec\u8bbe\u7f6e
              \nsinkApp[0].Start(Seconds(0.0));
              \nsinkApp[0].Stop(Seconds(10.0)); <\/p>\n

              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5. \u914d\u7f6etrace\u53d8\u91cf（\u53ef\u9009）<\/h4>\n
                \n
              • BulkSendApplication\u548cPacketSink\u5206\u522b\u63d0\u4f9b\u4e86\u53d1\u9001（Tx）\u548c\u63a5\u6536（Rx）\u7684trace\u53d8\u91cf<\/li>\n<\/ul>\n

                \/************\u914d\u7f6etrace\u56de\u8c03\u51fd\u6570\u793a\u4f8b***************\/<\/p>\n

                \/\/\u5206\u7ec4\u63a5\u6536\u56de\u8c03\u51fd\u6570
                \nvoid recvPackets(
                \n std::string path,
                \n Ptr<const Packet>packet,
                \n const Address&from);<\/p>\n

                \/\/\u5206\u7ec4\u53d1\u9001\u56de\u8c03\u51fd\u6570
                \nvoid sendPackets(
                \n std::string path,
                \n Ptr<const Packet>packet);<\/p>\n

                \/\/\u914d\u7f6etrace\u53d8\u91cf
                \nConfig::Connect(
                \n "\/NodeList\/0\/ApplicationList\/*\/\\\\
                \n $ns3::BulkSendApplication\/Tx",
                \n MakeCallback(&sendPackets));
                \nConfig::Connect("NodeList\/*\/\\\\
                \n ApplicationList\/*\/$ns3::PacketSink\/Rx",
                \n MakeCallback(&recvPackets)); <\/p>\n

                \u6240\u6709\u5185\u7f6e\u534f\u8bae\u52a9\u624b\u7c7b\u7684\u4f7f\u7528\u65b9\u6cd5\u548c\u987a\u5e8f\u90fd\u662f\u76f8\u540c\u7684<\/p>\n

                2.3 \u5206\u7ec4\u4ea7\u751f\u5668<\/h3>\n

                2.3.1. \u5206\u7ec4\u63a5\u6536\u5668：PacketSink<\/h4>\n

                \u4e13\u95e8\u90e8\u7f72\u5728\u670d\u52a1\u5668\u7aef\u7684\u5e94\u7528\u5c42\u534f\u8bae，\u53ef\u4ee5\u63a5\u6536\u6765\u81eaTCP\u3001UDP\u3001IPv4\u3001IPv6\u548cNetDevice\u534f\u8bae\u7684\u5206\u7ec4\u3002\u52a9\u624b\u7c7b\u662fPacketSinkHelper\u3002<\/p>\n

                \u5de5\u4f5c\u539f\u7406：\u5bf9\u4e8e\u63a5\u6536\u5230\u7684\u6bcf\u4e00\u4e2a\u5206\u7ec4，\u6253\u5370\u5176\u57fa\u672c\u4fe1\u606f\u5e76\u8bb0\u5f55（\u901a\u8fc7Rx trace\u53d8\u91cf），\u5e38\u5e38\u4e0eOnOffApplication\u3001BulkSendApplication\u4e00\u8d77\u4f7f\u7528<\/p>\n

                  \n
                • \n
                  ～examples\/tcp\/tcp-bulk-send.cc<\/h5>\n<\/li>\n<\/ul>\n

                  \/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- *\/
                  \n\/*
                  \n * \u4f7f\u7528 ns-3 \u7f51\u7edc\u6a21\u62df\u5668\u521b\u5efa\u7684\u7b80\u5355\u70b9\u5bf9\u70b9\u7f51\u7edc\u62d3\u6251，\u6f14\u793a\u4e86 TCP \u5927\u6587\u4ef6\u4f20\u8f93（BulkSend）\u573a\u666f
                  \n *
                  \n * This program is distributed in the hope that it will be useful,
                  \n * but WITHOUT ANY WARRANTY; without even the implied warranty of
                  \n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
                  \n * GNU General Public License for more details.
                  \n *
                  \n * You should have received a copy of the GNU General Public License
                  \n * along with this program; if not, write to the Free Software
                  \n * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
                  \n *\/<\/p>\n

                  \/\/ \u62d3\u6251\u7ed3\u6784：\u4e24\u4e2a\u8282\u70b9\u901a\u8fc7\u70b9\u5bf9\u70b9\u94fe\u8def\u8fde\u63a5，\u5e26\u5bbd 500 Kbps，\u5ef6\u8fdf 5ms
                  \n\/\/
                  \n\/\/ n0 ———– n1
                  \n\/\/ 500 Kbps
                  \n\/\/ 5 ms
                  \n\/\/
                  \n\/\/ – Flow from n0 to n1 using BulkSendApplication.
                  \n\/\/ – Tracing of queues and packet receptions to file "tcp-bulk-send.tr"
                  \n\/\/ and pcap tracing available when tracing is turned on.<\/p>\n

                  #include <string>
                  \n#include <fstream>
                  \n#include "ns3\/core-module.h"
                  \n#include "ns3\/point-to-point-module.h"
                  \n#include "ns3\/internet-module.h"
                  \n#include "ns3\/applications-module.h"
                  \n#include "ns3\/network-module.h"
                  \n#include "ns3\/packet-sink.h"\/\/ \u6570\u636e\u5305\u63a5\u6536\u5668\u7c7b<\/p>\n

                  using namespace ns3;<\/p>\n

                  NS_LOG_COMPONENT_DEFINE ("TcpBulkSendExample");<\/p>\n

                  int
                  \nmain (int argc, char *argv[])
                  \n{<\/p>\n

                  bool tracing = false;
                  \n uint32_t maxBytes = 0;<\/p>\n

                  \/\/
                  \n\/\/ Allow the user to override any of the defaults at
                  \n\/\/ run-time, via command-line arguments
                  \n\/\/
                  \n CommandLine cmd (__FILE__);
                  \n cmd.AddValue ("tracing", "Flag to enable\/disable tracing", tracing);\/\/tracing: \u63a7\u5236\u662f\u5426\u542f\u7528\u8ddf\u8e2a
                  \n cmd.AddValue ("maxBytes",
                  \n "Total number of bytes for application to send", maxBytes);\/\/maxBytes: \u5e94\u7528\u7a0b\u5e8f\u8981\u53d1\u9001\u7684\u603b\u5b57\u8282\u6570（0\u8868\u793a\u65e0\u9650\u5236）
                  \n cmd.Parse (argc, argv);<\/p>\n

                  \/\/
                  \n\/\/ Explicitly create the nodes required by the topology (shown above).
                  \n\/\/
                  \n NS_LOG_INFO ("Create nodes.");
                  \n NodeContainer nodes;
                  \n nodes.Create (2);\/\/ \u521b\u5efa 2 \u4e2a\u8282\u70b9<\/p>\n

                  NS_LOG_INFO ("Create channels.");<\/p>\n

                  \/\/
                  \n\/\/ Explicitly create the point-to-point link required by the topology (shown above).<\/p>\n

                  \/\/\u521b\u5efa\u5e26\u5bbd\u4e3a 500 Kbps，\u5ef6\u8fdf\u4e3a 5ms \u7684\u70b9\u5bf9\u70b9\u94fe\u8def
                  \n PointToPointHelper pointToPoint;
                  \n pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("500Kbps"));
                  \n pointToPoint.SetChannelAttribute ("Delay", StringValue ("5ms"));<\/p>\n

                  NetDeviceContainer devices;
                  \n devices = pointToPoint.Install (nodes);<\/p>\n

                  \/\/
                  \n\/\/ Install the internet stack on the nodes
                  \n\/\/
                  \n InternetStackHelper internet;
                  \n internet.Install (nodes);\/\/ \u5728\u4e24\u4e2a\u8282\u70b9\u4e0a\u5b89\u88c5 TCP\/IP \u534f\u8bae\u6808<\/p>\n

                  \/\/
                  \n\/\/ We've got the "hardware" in place. Now we need to add IP addresses.
                  \n\/\/
                  \n NS_LOG_INFO ("Assign IP Addresses.");
                  \n Ipv4AddressHelper ipv4;
                  \n ipv4.SetBase ("10.1.1.0", "255.255.255.0");\/\/\u5206\u914d IP \u5730\u5740：n0 \u5f97\u5230 10.1.1.1，n1 \u5f97\u5230 10.1.1.2
                  \n Ipv4InterfaceContainer i = ipv4.Assign (devices);<\/p>\n

                  NS_LOG_INFO ("Create Applications.");<\/p>\n

                  \/\/
                  \n\/\/ \u521b\u5efa BulkSend \u53d1\u9001\u5e94\u7528（\u5728 n0 \u4e0a）
                  \n\/\/
                  \n uint16_t port = 9; \/\/ well-known echo port number<\/p>\n

                  BulkSendHelper source ("ns3::TcpSocketFactory",
                  \n InetSocketAddress (i.GetAddress (1), port));
                  \n \/\/ \u521b\u5efa\u4e00\u4e2a\u6301\u7eed\u53d1\u9001\u6570\u636e\u7684 TCP \u5e94\u7528，maxBytes=0 \u8868\u793a\u65e0\u9650\u5236\u53d1\u9001，\u76f4\u5230\u6a21\u62df\u7ed3\u675f
                  \n source.SetAttribute ("MaxBytes", UintegerValue (maxBytes));
                  \n ApplicationContainer sourceApps = source.Install (nodes.Get (0));
                  \n sourceApps.Start (Seconds (0.0));
                  \n sourceApps.Stop (Seconds (10.0));<\/p>\n

                  \/\/
                  \n\/\/ \u521b\u5efa PacketSink \u63a5\u6536\u5e94\u7528（\u5728 n1 \u4e0a）
                  \n\/\/
                  \n PacketSinkHelper sink ("ns3::TcpSocketFactory",
                  \n InetSocketAddress (Ipv4Address::GetAny (), port));
                  \n ApplicationContainer sinkApps = sink.Install (nodes.Get (1));
                  \n sinkApps.Start (Seconds (0.0));
                  \n sinkApps.Stop (Seconds (10.0));<\/p>\n

                  \/\/
                  \n\/\/ \u914d\u7f6e\u8ddf\u8e2a（\u53ef\u9009）
                  \n\/\/
                  \n if (tracing)
                  \n {
                  \n AsciiTraceHelper ascii;
                  \n pointToPoint.EnableAsciiAll (ascii.CreateFileStream ("tcp-bulk-send.tr"));
                  \n pointToPoint.EnablePcapAll ("tcp-bulk-send", false);
                  \n }<\/p>\n

                  \/\/\u751f\u6210 ASCII \u683c\u5f0f\u8ddf\u8e2a\u6587\u4ef6 "tcp-bulk-send.tr"
                  \n\/\/\u751f\u6210 PCAP \u683c\u5f0f\u8ddf\u8e2a\u6587\u4ef6，\u53ef\u7528\u4e8e Wireshark \u5206\u6790
                  \n\/\/
                  \n\/\/ Now, do the actual simulation.
                  \n\/\/
                  \n NS_LOG_INFO ("Run Simulation.");
                  \n Simulator::Stop (Seconds (10.0));\/\/ \u8bbe\u7f6e\u6a21\u62df\u505c\u6b62\u65f6\u95f4
                  \n Simulator::Run ();
                  \n Simulator::Destroy ();
                  \n NS_LOG_INFO ("Done.");<\/p>\n

                  \/\/ \u83b7\u53d6\u5e76\u8f93\u51fa\u7edf\u8ba1\u4fe1\u606f
                  \n Ptr<PacketSink> sink1 = DynamicCast<PacketSink> (sinkApps.Get (0));
                  \n std::cout << "Total Bytes Received: " << sink1->GetTotalRx () << std::endl;
                  \n} <\/p>\n

                  \u7a0b\u5e8f\u529f\u80fd\u548c\u6267\u884c\u903b\u8f91<\/h6>\n

                  1\u3001\u7f51\u7edc\u62d3\u6251：n0（10.1.1.1）—–[500kbps,5ms]—–n1(10.1.1.2)<\/p>\n

                  2\u3001TCP\u8fde\u63a5\u5efa\u7acb\u8fc7\u7a0b（\u4e09\u6b21\u63e1\u624b）：<\/p>\n

                  \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0s：n0\u542f\u52a8BulkSend \u5e94\u7528，n1 \u542f\u52a8 PacketSink \u5e94\u7528<\/p>\n

                  \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 n0 \u5411 n1 \u53d1\u8d77 TCP \u8fde\u63a5（SYN）<\/p>\n

                  \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0n1 \u56de\u590d SYN-ACK<\/p>\n

                  \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0n0 \u53d1\u9001 ACK，\u8fde\u63a5\u5efa\u7acb<\/p>\n

                  3\u3001\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b：<\/p>\n

                    \n
                  • \n

                    TCP \u6d41\u63a7\u5236：ns-3 \u4e2d\u7684 TCP \u5b9e\u73b0\u4f1a\u81ea\u52a8\u8fdb\u884c\u62e5\u585e\u63a7\u5236<\/p>\n<\/li>\n

                  • \n

                    \u6570\u636e\u4f20\u8f93：n0 \u6301\u7eed\u53d1\u9001\u6570\u636e，\u76f4\u5230：\u8fbe\u5230 maxBytes \u9650\u5236\u6216\u5230\u8fbe\u505c\u6b62\u65f6\u95f4<\/p>\n<\/li>\n

                  • \n

                    \u63a5\u6536\u786e\u8ba4：n1 \u63a5\u6536\u6570\u636e\u5e76\u53d1\u9001 ACK<\/p>\n<\/li>\n<\/ul>\n

                    4\u3001\u6267\u884c\u65f6\u95f4\u7ebf：<\/p>\n\n\n\n\n\n\n\n\n
                    \u65f6\u95f4（\u79d2）<\/td>\n\u4e8b\u4ef6<\/td>\n<\/tr>\n
                    0.0<\/td>\nTCP\u8fde\u63a5\u5efa\u7acb\u5f00\u59cb，\u6570\u636e\u4f20\u8f93\u5f00\u59cb<\/td>\n<\/tr>\n
                    \u2026<\/td>\n\u6570\u636e\u4f20\u8f93\u8fdb\u884c\u4e2d<\/td>\n<\/tr>\n
                    9.999+<\/td>\nn0\u53d1\u9001\u6700\u540e\u4e00\u4e2a\u6570\u636e\u5305<\/td>\n<\/tr>\n
                    10.0<\/td>\n\n

                    \u5e94\u7528\u7a0b\u5e8f\u505c\u6b62，TCP\u53efianjie\u6b63\u5e38\u5173\u95ed<\/p>\n<\/td>\n<\/tr>\n

                    10.0+<\/td>\n\u6a21\u62df\u7ed3\u675f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                    5\u3001\u5173\u952e\u7279\u70b9：<\/p>\n

                    BulkSendApplication \u7279\u6027<\/p>\n

                      \n
                    • \n

                      \u6301\u7eed\u751f\u6210\u6570\u636e\u5e76\u5c3d\u53ef\u80fd\u5feb\u5730\u53d1\u9001<\/p>\n<\/li>\n

                    • \n

                      \u4f7f\u7528 TCP \u534f\u8bae，\u786e\u4fdd\u53ef\u9760\u4f20\u8f93<\/p>\n<\/li>\n

                    • \n

                      \u81ea\u52a8\u5904\u7406 TCP \u7684\u6d41\u63a7\u5236\u548c\u62e5\u585e\u63a7\u5236<\/p>\n<\/li>\n<\/ul>\n

                      TCP \u534f\u8bae\u6808\u914d\u7f6e<\/p>\n

                      \u7a0b\u5e8f\u4f7f\u7528\u4e86 ns-3 \u7684\u9ed8\u8ba4 TCP \u5b9e\u73b0（\u901a\u5e38\u662f TcpNewReno），\u5305\u62ec：<\/p>\n

                    • \n

                      \u6162\u542f\u52a8：\u8fde\u63a5\u5f00\u59cb\u65f6\u6307\u6570\u589e\u957f\u62e5\u585e\u7a97\u53e3<\/p>\n<\/li>\n

                    • \n

                      \u62e5\u585e\u907f\u514d：\u62e5\u585e\u7a97\u53e3\u7ebf\u6027\u589e\u957f<\/p>\n<\/li>\n

                    • \n

                      \u5feb\u901f\u91cd\u4f20\/\u5feb\u901f\u6062\u590d：\u5904\u7406\u4e22\u5305\u60c5\u51b5<\/p>\n<\/li>\n

                      \u94fe\u8def\u5bb9\u91cf\u4e0e\u7406\u8bba\u6700\u5927\u4f20\u8f93\u91cf<\/p>\n

                        \n
                      • \n

                        \u94fe\u8def\u5e26\u5bbd：500 Kbps = 62.5 KB\/s<\/p>\n<\/li>\n

                      • \n

                        \u6a21\u62df\u65f6\u95f4：10 \u79d2<\/p>\n<\/li>\n

                      • \n

                        \u7406\u8bba\u6700\u5927\u4f20\u8f93\u91cf：62.5 KB\/s \u00d7 10s = 625 KB<\/p>\n<\/li>\n

                      • \n

                        \u8003\u8651 TCP \u5efa\u7acb\/\u5173\u95ed\u5f00\u9500\u548c\u62e5\u585e\u63a7\u5236，\u5b9e\u9645\u4f20\u8f93\u91cf\u4f1a\u7565\u4f4e\u4e8e\u6b64\u503c<\/p>\n<\/li>\n<\/ul>\n

                        6\u3001\u8f93\u51fa\u7ed3\u679c\u5206\u6790<\/p>\n

                        \u7a0b\u5e8f\u6700\u540e\u8f93\u51fa\u7684 "Total Bytes Received" \u53ef\u4ee5\u7528\u4e8e：<\/p>\n

                          \n
                        • \u8ba1\u7b97\u541e\u5410\u91cf：\u603b\u5b57\u8282\u6570\/\u4f20\u8f93\u65f6\u95f4<\/li>\n
                        • \u8bc4\u4f30TCP\u6027\u80fd：\u6bd4\u8f83\u4e16\u7eaa\u541e\u5410\u91cf\u4e0e\u7406\u8bba\u6700\u5927\u503c<\/li>\n
                        • \u5206\u6790\u6548\u7387：\u8003\u8651TCP\u5f00\u9500\u540e\u7684\u5b9e\u9645\u6548\u7387<\/li>\n<\/ul>\n
                            \n
                          • \n
                            ～examples\/routing\/simple-global-routing.cc<\/h5>\n<\/li>\n<\/ul>\n

                            \/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- *\/
                            \n\/*
                            \n * \u4f7f\u7528 ns-3 \u7f51\u7edc\u6a21\u62df\u5668\u521b\u5efa\u7684\u661f\u578b\u7f51\u7edc\u62d3\u6251\u793a\u4f8b，\u6f14\u793a\u4e86\u5168\u5c40\u8def\u7531\u548c\u591a\u4e2a\u6570\u636e\u6d41（UDP）\u7684\u573a\u666f
                            \n *
                            \n *
                            \n *\/<\/p>\n

                            \/\/\u62d3\u6251\u7ed3\u6784：\u8282\u70b9 n2 \u4f5c\u4e3a\u4e2d\u5fc3\u8282\u70b9，\u8fde\u63a5 n0\u3001n1 \u548c n3
                            \n\/\/ Network topology
                            \n\/\/
                            \n\/\/ n0
                            \n\/\/ \\\\ 5 Mb\/s, 2ms
                            \n\/\/ \\\\ 1.5Mb\/s, 10ms
                            \n\/\/ n2 ————————-n3
                            \n\/\/ \/
                            \n\/\/ \/ 5 Mb\/s, 2ms
                            \n\/\/ n1
                            \n\/\/
                            \n\/\/ – all links are point-to-point links with indicated one-way BW\/delay
                            \n\/\/ – CBR\/UDP flows from n0 to n3, and from n3 to n1
                            \n\/\/ – FTP\/TCP flow from n0 to n3, starting at time 1.2 to time 1.35 sec.
                            \n\/\/ – UDP packet size of 210 bytes, with per-packet interval 0.00375 sec.
                            \n\/\/ (i.e., DataRate of 448,000 bps)
                            \n\/\/ – DropTail queues
                            \n\/\/ – Tracing of queues and packet receptions to file "simple-global-routing.tr"<\/p>\n

                            #include <iostream>
                            \n#include <fstream>
                            \n#include <string>
                            \n#include <cassert><\/p>\n

                            #include "ns3\/core-module.h"
                            \n#include "ns3\/network-module.h"
                            \n#include "ns3\/internet-module.h"
                            \n#include "ns3\/point-to-point-module.h"
                            \n#include "ns3\/applications-module.h"
                            \n#include "ns3\/flow-monitor-helper.h"\/\/\u6d41\u91cf\u76d1\u63a7\u52a9\u624b
                            \n#include "ns3\/ipv4-global-routing-helper.h"\/\/\u5168\u5c40\u8def\u7531\u52a9\u624b<\/p>\n

                            using namespace ns3;<\/p>\n

                            NS_LOG_COMPONENT_DEFINE ("SimpleGlobalRoutingExample");<\/p>\n

                            int
                            \nmain (int argc, char *argv[])
                            \n{
                            \n \/\/ Users may find it convenient to turn on explicit debugging
                            \n \/\/ for selected modules; the below lines suggest how to do this
                            \n#if 0
                            \n LogComponentEnable ("SimpleGlobalRoutingExample", LOG_LEVEL_INFO);
                            \n#endif<\/p>\n

                            \/\/\u914d\u7f6e\u9ed8\u8ba4\u53c2\u6570： \u8bbe\u7f6e OnOff \u5e94\u7528\u7684\u9ed8\u8ba4\u6570\u636e\u5305\u5927\u5c0f（210\u5b57\u8282）\u548c\u6570\u636e\u901f\u7387（448 kbps）
                            \n Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (210));
                            \n Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("448kb\/s"));<\/p>\n

                            \/\/DefaultValue::Bind ("DropTailQueue::m_maxPackets", 30);\/\/\u961f\u5217\u957f\u5ea6\u8bbe\u7f6e\u4e3a30<\/p>\n

                            \/\/ \u547d\u4ee4\u884c\u53c2\u6570\u5904\u7406： –EnableMonitor \u6765\u63a7\u5236\u662f\u5426\u542f\u7528\u6d41\u91cf\u76d1\u63a7
                            \n \/\/ DefaultValue::Bind ()s at run-time, via command-line arguments
                            \n CommandLine cmd (__FILE__);
                            \n bool enableFlowMonitor = false;
                            \n cmd.AddValue ("EnableMonitor", "Enable Flow Monitor", enableFlowMonitor);
                            \n cmd.Parse (argc, argv);<\/p>\n

                            \/\/ Here, we will explicitly create four nodes. In more sophisticated
                            \n \/\/ topologies, we could configure a node factory.
                            \n NS_LOG_INFO ("Create nodes.");
                            \n NodeContainer c;
                            \n c.Create (4);\/\/\u521b\u5efa4\u4e2a\u8282\u70b9，\u5b9a\u4e49\u4e09\u4e2a\u70b9\u5bf9\u70b9\u8fde\u63a5
                            \n NodeContainer n0n2 = NodeContainer (c.Get (0), c.Get (2));
                            \n NodeContainer n1n2 = NodeContainer (c.Get (1), c.Get (2));
                            \n NodeContainer n3n2 = NodeContainer (c.Get (3), c.Get (2));<\/p>\n

                            InternetStackHelper internet;
                            \n internet.Install (c);\/\/\u5728\u6240\u6709\u8282\u70b9\u4e0a\u5b89\u88c5TCP\/IP\u534f\u8bae\u6808<\/p>\n

                            \/\/ \u521b\u5efa\u70b9\u5bf9\u70b9\u94fe\u8def\u548c\u8bbe\u5907
                            \n NS_LOG_INFO ("Create channels.");
                            \n PointToPointHelper p2p;
                            \n p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
                            \n p2p.SetChannelAttribute ("Delay", StringValue ("2ms"));
                            \n NetDeviceContainer d0d2 = p2p.Install (n0n2);\/\/n0-n2\u94fe\u8def：5Mbps，2ms<\/p>\n

                            NetDeviceContainer d1d2 = p2p.Install (n1n2);\/\/n1-n2\u94fe\u8def：5Mbps，2ms<\/p>\n

                            p2p.SetDeviceAttribute ("DataRate", StringValue ("1500kbps"));
                            \n p2p.SetChannelAttribute ("Delay", StringValue ("10ms"));
                            \n NetDeviceContainer d3d2 = p2p.Install (n3n2);\/\/n3-n2\u94fe\u8def：1.5Mbps，10ms<\/p>\n

                            \/\/ \u5206\u914dIP\u5730\u5740
                            \n NS_LOG_INFO ("Assign IP Addresses.");
                            \n Ipv4AddressHelper ipv4;
                            \n ipv4.SetBase ("10.1.1.0", "255.255.255.0");
                            \n Ipv4InterfaceContainer i0i2 = ipv4.Assign (d0d2);\/\/n0-n2：10.1.1.0\/24<\/p>\n

                            ipv4.SetBase ("10.1.2.0", "255.255.255.0");
                            \n Ipv4InterfaceContainer i1i2 = ipv4.Assign (d1d2);\/\/n1-n2：10.1.2.0\/24<\/p>\n

                            ipv4.SetBase ("10.1.3.0", "255.255.255.0");
                            \n Ipv4InterfaceContainer i3i2 = ipv4.Assign (d3d2);\/\/n3-n2：10.1.3.0\/24<\/p>\n

                            \/\/ \u914d\u7f6e\u5168\u5c40\u8def\u7531：\u8ba1\u7b97\u5e76\u5b89\u88c5\u5168\u5c40\u8def\u7531\u8868，\u8ba9\u6240\u6709\u8282\u70b9\u77e5\u9053\u5982\u4f55\u5230\u8fbe\u7f51\u7edc\u4e2d\u7684\u6240\u6709\u5176\u4ed6\u8282\u70b9
                            \n Ipv4GlobalRoutingHelper::PopulateRoutingTables ();<\/p>\n

                            \/\/ \u521b\u5efa\u5e94\u7528\u7a0b\u5e8f
                            \n \/\/ 210 bytes at a rate of 448 Kb\/s
                            \n NS_LOG_INFO ("Create Applications.");
                            \n \/\/\u7b2c\u4e00\u4e2a UDP \u6d41（n0 \u2192 n3）
                            \n uint16_t port = 9; \/\/ Discard port (RFC 863)
                            \n OnOffHelper onoff ("ns3::UdpSocketFactory",
                            \n Address (InetSocketAddress (i3i2.GetAddress (0), port)));
                            \n onoff.SetConstantRate (DataRate ("448kb\/s"));
                            \n ApplicationContainer apps = onoff.Install (c.Get (0));\/\/\u5b89\u88c5\u5728n0
                            \n apps.Start (Seconds (1.0));
                            \n apps.Stop (Seconds (10.0));<\/p>\n

                            \/\/\u521b\u5efa\u7b2c\u4e00\u4e2a\u6570\u636e\u5305\u63a5\u6536\u5668（\u5728 n3）
                            \n PacketSinkHelper sink ("ns3::UdpSocketFactory",
                            \n Address (InetSocketAddress (Ipv4Address::GetAny (), port)));
                            \n apps = sink.Install (c.Get (3));\/\/ \u5728 n3 \u4e0a\u5b89\u88c5\u63a5\u6536\u5668
                            \n apps.Start (Seconds (1.0));
                            \n apps.Stop (Seconds (10.0));<\/p>\n

                            \/\/ \u521b\u5efa\u7b2c\u4e8c\u4e2a UDP \u6d41（n3 \u2192 n1）
                            \n onoff.SetAttribute ("Remote",
                            \n AddressValue (InetSocketAddress (i1i2.GetAddress (0), port)));
                            \n apps = onoff.Install (c.Get (3));\/\/ \u5b89\u88c5\u5728 n3
                            \n apps.Start (Seconds (1.1)); \/\/ \u6bd4\u7b2c\u4e00\u4e2a\u6d41\u665a 0.1 \u79d2\u5f00\u59cb
                            \n apps.Stop (Seconds (10.0));<\/p>\n

                            \/\/ \u521b\u5efa\u7b2c\u4e8c\u4e2a\u6570\u636e\u5305\u63a5\u6536\u5668（\u5728 n1
                            \n apps = sink.Install (c.Get (1));\/\/ \u5728 n1 \u4e0a\u5b89\u88c5\u63a5\u6536\u5668
                            \n apps.Start (Seconds (1.1));
                            \n apps.Stop (Seconds (10.0));<\/p>\n

                            \/\/\u914d\u7f6e\u8ddf\u8e2a：\u542f\u7528 ASCII \u8ddf\u8e2a\u548c PCAP \u8ddf\u8e2a，\u7528\u4e8e\u540e\u7eed\u5206\u6790
                            \n AsciiTraceHelper ascii;
                            \n p2p.EnableAsciiAll (ascii.CreateFileStream ("simple-global-routing.tr"));
                            \n p2p.EnablePcapAll ("simple-global-routing");<\/p>\n

                            \/\/ \u6d41\u91cf\u76d1\u63a7（\u53ef\u9009）：\u5982\u679c\u547d\u4ee4\u884c\u53c2\u6570\u542f\u7528\u4e86\u6d41\u91cf\u76d1\u63a7，\u5219\u5b89\u88c5\u6d41\u91cf\u76d1\u63a7\u5668
                            \n FlowMonitorHelper flowmonHelper;
                            \n if (enableFlowMonitor)
                            \n {
                            \n flowmonHelper.InstallAll ();
                            \n }<\/p>\n

                            \/\/\u8fd0\u884c\u6a21\u62df
                            \n NS_LOG_INFO ("Run Simulation.");
                            \n Simulator::Stop (Seconds (11)); \/\/ \u505c\u6b62\u65f6\u95f4\u6bd4\u5e94\u7528\u505c\u6b62\u65f6\u95f4\u665a1\u79d2
                            \n Simulator::Run ();
                            \n NS_LOG_INFO ("Done.");<\/p>\n

                            if (enableFlowMonitor)
                            \n {
                            \n flowmonHelper.SerializeToXmlFile ("simple-global-routing.flowmon", false, false);
                            \n }<\/p>\n

                            Simulator::Destroy ();
                            \n return 0;
                            \n} <\/p>\n

                            \u7a0b\u5e8f\u529f\u80fd\u4e0e\u6267\u884c\u903b\u8f91<\/h6>\n

                            1\u3001\u7f51\u7edc\u62d3\u6251\u8be6\u60c5：<\/p>\n\n\n\n\n\n\n
                            \u8282\u70b9\u8fde\u63a5：<\/td>\n<\/tr>\n
                            n0-n2<\/td>\n5Mbps,2ms\u5ef6\u8fdf<\/td>\n<\/tr>\n
                            n1-n2<\/td>\n5Mbps,2ms\u5ef6\u8fdf<\/td>\n<\/tr>\n
                            n3-n2<\/td>\n1.5Mbps,10ms\u5ef6\u8fdf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n
                            IP\u5730\u5740\u5206\u914d：<\/td>\n<\/tr>\n
                            -n0:10.1.1.1(\u63a5\u53e3\u8fde\u63a5\u5230n2)<\/td>\n<\/tr>\n
                            -n1:10.1.2.1(\u63a5\u53e3\u8fde\u63a5\u5230n2)<\/td>\n<\/tr>\n
                            -n2:10.1.1.2,10.1.2.2,10.1.3.1(\u4e09\u4e2a\u63a5\u53e3)<\/td>\n<\/tr>\n
                            -n3:10.1.3.2(\u63a5\u53e3\u8fde\u63a5\u5230n2)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                            2\u3001\u6570\u636e\u6d41\u8be6\u60c5：<\/p>\n

                              \n
                            • \u6d411：n0-n3（UDP）<\/li>\n<\/ul>\n

                              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5f00\u59cb\u65f6\u95f4：1.0s<\/p>\n

                              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u7ed3\u675f\u65f6\u95f4：10.0s<\/p>\n

                              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6570\u636e\u901f\u7387：448kbps<\/p>\n

                              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6570\u636e\u5305\u5927\u5c0f：210\u5b57\u8282<\/p>\n

                              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8def\u5f84：n0-n2-n3<\/p>\n

                                \n
                              • \u6d412：n3-n1（UDP）<\/li>\n<\/ul>\n

                                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5f00\u59cb\u65f6\u95f4：1.1s<\/p>\n

                                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u7ed3\u675f\u65f6\u95f4：10.0s<\/p>\n

                                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6570\u636e\u901f\u7387：448kbps<\/p>\n

                                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6570\u636e\u5305\u5927\u5c0f：210\u5b57\u8282<\/p>\n

                                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8def\u5f84：n3-n2-n1<\/p>\n

                                3\u3001\u6267\u884c\u65f6\u95f4：<\/p>\n\n\n\n\n\n\n\n\n\n
                                \u65f6\u95f4（\u79d2）<\/td>\n\u4e8b\u4ef6<\/td>\n<\/tr>\n
                                0.0<\/td>\n\u6a21\u62df\u5f00\u59cb，\u8def\u7531\u8868\u5efa\u7acb<\/td>\n<\/tr>\n
                                1.0<\/td>\nn0\u5f00\u59cb\u5411n3\u53d1\u9001UDP\u6570\u636e，n3\u5f00\u59cb\u63a5\u6536<\/td>\n<\/tr>\n
                                1.1<\/td>\nn3\u5f00\u59cb\u5411n1\u53d1\u9001UDP\u6570\u636e，n1\u5f00\u59cb\u63a5\u6536<\/td>\n<\/tr>\n
                                10.0<\/td>\n\u6240\u6709\u53d1\u9001\u5e94\u7528\u505c\u6b62<\/td>\n<\/tr>\n
                                10.0<\/td>\n\u6240\u6709\u63a5\u6536\u5e94\u7528\u505c\u6b62（\u5b9e\u9645\u4e0a\u63a5\u53d7\u5668\u4f1a\u7ee7\u7eed\u63a5\u6536\u5df2\u7ecf\u5728\u9014\u7684\u6570\u636e\u5305）<\/td>\n<\/tr>\n
                                11.0<\/td>\n\u6a21\u62df\u7ed3\u675f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                4\u3001\u8def\u7531\u673a\u5236：<\/p>\n

                                  \n
                                • \n

                                  \u4f7f\u7528 Ipv4GlobalRoutingHelper::PopulateRoutingTables() \u81ea\u52a8\u8ba1\u7b97\u6700\u4f73\u8def\u7531<\/p>\n<\/li>\n

                                • \n

                                  n2 \u4f5c\u4e3a\u8def\u7531\u5668，\u8d1f\u8d23\u8f6c\u53d1 n0-n3 \u548c n3-n1 \u4e4b\u95f4\u7684\u6570\u636e\u5305<\/p>\n<\/li>\n

                                • \n

                                  \u8def\u7531\u8868\u57fa\u4e8e\u94fe\u8def\u6210\u672c（\u5e26\u5bbd\u548c\u5ef6\u8fdf）\u81ea\u52a8\u8ba1\u7b97<\/p>\n<\/li>\n<\/ul>\n

                                  5\u3001\u5173\u952e\u7279\u70b9：<\/p>\n

                                    \n
                                  • \n

                                    \u4e0d\u5bf9\u79f0\u94fe\u8def\u5e26\u5bbd：n2-n3 \u94fe\u8def（1.5 Mbps）\u6bd4\u5176\u4ed6\u94fe\u8def（5 Mbps）\u6162，\u53ef\u80fd\u6210\u4e3a\u74f6\u9888<\/p>\n<\/li>\n

                                  • \n

                                    \u591a\u8df3\u901a\u4fe1：n0 \u548c n3 \u4e4b\u95f4\u7684\u901a\u4fe1\u9700\u8981\u7ecf\u8fc7 n2 \u8f6c\u53d1<\/p>\n<\/li>\n

                                  • \n

                                    \u5168\u5c40\u8def\u7531：\u81ea\u52a8\u8ba1\u7b97\u548c\u914d\u7f6e\u6240\u6709\u8282\u70b9\u7684\u8def\u7531\u8868<\/p>\n<\/li>\n

                                  • \n

                                    \u5e76\u53d1 UDP \u6d41：\u4e24\u4e2a\u65b9\u5411\u76f8\u53cd\u7684 UDP \u6570\u636e\u6d41\u540c\u65f6\u8fd0\u884c<\/p>\n<\/li>\n

                                  • \n

                                    \u5b8c\u6574\u7684\u534f\u8bae\u6808：\u4f7f\u7528 TCP\/IP \u534f\u8bae\u6808，\u800c\u4e0d\u4ec5\u4ec5\u662f\u539f\u59cb\u6570\u636e\u5305<\/p>\n<\/li>\n<\/ul>\n

                                    6\u3001\u8f93\u51fa\u6587\u4ef6：<\/p>\n

                                      \n
                                    • \n

                                      simple-global-routing.tr：ASCII \u683c\u5f0f\u7684\u7f51\u7edc\u4e8b\u4ef6\u8ddf\u8e2a<\/p>\n<\/li>\n

                                    • \n

                                      simple-global-routing-0-1.pcap \u7b49：\u6bcf\u4e2a\u8282\u70b9\u7684 PCAP \u6587\u4ef6，\u53ef\u7528 Wireshark \u5206\u6790<\/p>\n<\/li>\n

                                    • \n

                                      simple-global-routing.flowmon（\u53ef\u9009）：\u5982\u679c\u542f\u7528\u6d41\u91cf\u76d1\u63a7，\u751f\u6210 XML \u683c\u5f0f\u7684\u6d41\u91cf\u7edf\u8ba1<\/p>\n<\/li>\n<\/ul>\n

                                        \n
                                      • \n
                                        ～src\/csma\/examples\/csma-packet-socket.cc<\/h5>\n<\/li>\n<\/ul>\n

                                        \/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- *\/
                                        \n\/*
                                        \n\u4f7f\u7528 ns-3 \u7f51\u7edc\u6a21\u62df\u5668\u521b\u5efa\u7684 CSMA（\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee）\u7f51\u7edc\u793a\u4f8b
                                        \n\u6f14\u793a\u4e86\u539f\u59cb\u6570\u636e\u5305\u5957\u63a5\u5b57（Packet Socket）\u901a\u4fe1
                                        \n *\/<\/p>\n

                                        \/\/\u7f51\u7edc\u62d3\u6251\u8bf4\u660e：4\u4e2a\u8282\u70b9\u901a\u8fc7\u4e00\u4e2a\u5171\u4eab\u7684 CSMA \u603b\u7ebf\u8fde\u63a5
                                        \n\/\/
                                        \n\/\/
                                        \n\/\/ n0 n1 n2 n3
                                        \n\/\/ | | | |
                                        \n\/\/ =====================
                                        \n\/\/
                                        \n\/\/ – Two packet socket flows: from n0 to n1 and from n3 to n0
                                        \n\/\/ – Default 512 byte packets generated by traffic generator
                                        \n\/\/ – Output from the PacketSink trace source will be sent to the
                                        \n\/\/ csma-packet-socket-sink.tr file
                                        \n\/\/ ASCII trace output will be sent to the csma-packet-socket.tr file<\/p>\n

                                        #include <iostream>
                                        \n#include <fstream>
                                        \n#include <string>
                                        \n#include <cassert><\/p>\n

                                        #include "ns3\/core-module.h"\/\/ns3\u6838\u5fc3\u6a21\u5757
                                        \n#include "ns3\/network-module.h"\/\/\u7f51\u7edc\u6a21\u5757
                                        \n#include "ns3\/csma-module.h"\/\/CSMA\u6a21\u5757
                                        \n#include "ns3\/applications-module.h"\/\/\u5e94\u7528\u5c42\u6a21\u5757<\/p>\n

                                        using namespace ns3;<\/p>\n

                                        NS_LOG_COMPONENT_DEFINE ("CsmaPacketSocketExample");<\/p>\n

                                        std::ofstream g_os;\/\/\u5168\u5c40\u53d8\u91cf：\u5168\u5c40\u8f93\u51fa\u6587\u4ef6\u6d41<\/p>\n

                                        \/\/\u56de\u8c03\u51fd\u6570：\u8be5\u56de\u8c03\u51fd\u6570\u5728PacketSink\u63a5\u6536\u5230\u6570\u636e\u5305\u65f6\u88ab\u8c03\u7528，\u5c06\u6570\u636e\u5305\u5927\u5c0f\u5199\u5165\u6587\u4ef6
                                        \nstatic void
                                        \nSinkRx (std::string path, Ptr<const Packet> p, const Address &address)
                                        \n{
                                        \n g_os << p->GetSize () << std::endl;\/\/\u8bb0\u5f55\u63a5\u6536\u5230\u7684\u6570\u636e\u5305\u5927\u5c0f
                                        \n}<\/p>\n

                                        \/\/\u4e3b\u51fd\u6570
                                        \nint
                                        \nmain (int argc, char *argv[])
                                        \n{
                                        \n#if 0
                                        \n LogComponentEnable ("CsmaPacketSocketExample", LOG_LEVEL_INFO);
                                        \n#endif<\/p>\n

                                        \/\/\u6253\u5f00\u8f93\u51fa\u6587\u4ef6，\u7528\u4e8e\u8bb0\u5f55\u63a5\u6536\u5230\u7684\u6570\u636e\u5305\u4fe1\u606f
                                        \n CommandLine cmd (__FILE__);
                                        \n cmd.Parse (argc, argv);<\/p>\n

                                        g_os.open ("csma-packet-socket-sink.tr",std::ios_base::binary | std::ios_base::out);<\/p>\n

                                        \/\/ \u521b\u5efa\u7f51\u7edc\u7ed3\u70b9
                                        \n NS_LOG_INFO ("Create nodes.");
                                        \n NodeContainer nodes;
                                        \n nodes.Create (4);<\/p>\n

                                        \/\/\u5b89\u88c5PacketSocket
                                        \n PacketSocketHelper packetSocket;
                                        \n packetSocket.Install (nodes);\/\/\u5728\u6240\u6709\u7ed3\u70b9\u4e0a\u5b89\u88c5\u539f\u59cb\u6570\u636e\u5305\u5957\u63a5\u5b57<\/p>\n

                                        \/\/ \u521b\u5efaCSMA\u4fe1\u9053\u548c\u8bbe\u5907
                                        \n NS_LOG_INFO ("Create channels.");
                                        \n Ptr<CsmaChannel> channel = CreateObjectWithAttributes<CsmaChannel> (
                                        \n "DataRate", DataRateValue (DataRate (5000000)),\/\/5Mbps
                                        \n "Delay", TimeValue (MilliSeconds (2)));\/\/2ms \u8fdf\u5ef6<\/p>\n

                                        \/\/ use a helper function to connect our nodes to the shared channel.
                                        \n NS_LOG_INFO ("Build Topology.");
                                        \n CsmaHelper csma;
                                        \n csma.SetDeviceAttribute ("EncapsulationMode", StringValue ("Llc"));\/\/LLC\u5c01\u88c5
                                        \n NetDeviceContainer devs = csma.Install (nodes, channel);\/\/\u5b89\u88c5CSMA\u8bbe\u5907<\/p>\n

                                        NS_LOG_INFO ("Create Applications.");
                                        \n \/\/\u521b\u5efa\u5e94\u7528\u7a0b\u5e8f-\u4e24\u4e2a\u6570\u636e\u6d41<\/p>\n

                                        \/\/\u7b2c\u4e00\u4e2a\u6570\u636e\u6d41：\u4ece\u8282\u70b90\u5230\u8282\u70b91
                                        \n PacketSocketAddress socket;
                                        \n socket.SetSingleDevice (devs.Get (0)->GetIfIndex ());\/\/\u4f7f\u7528\u8282\u70b90\u7684\u8bbe\u5907
                                        \n socket.SetPhysicalAddress (devs.Get (1)->GetAddress ());\/\/\u76ee\u6807：\u8282\u70b91\u7684MAC\u5730\u5740
                                        \n socket.SetProtocol (2);\/\/\u534f\u8bae\u53f72
                                        \n OnOffHelper onoff ("ns3::PacketSocketFactory", Address (socket));
                                        \n onoff.SetConstantRate (DataRate ("500kb\/s"));\/\/500 Kbps\u6052\u5b9a\u901f\u7387
                                        \n ApplicationContainer apps = onoff.Install (nodes.Get (0));\/\/\u5b89\u88c5\u5728\u8282\u70b90
                                        \n apps.Start (Seconds (1.0));
                                        \n apps.Stop (Seconds (10.0));<\/p>\n

                                        \/\/\u7b2c\u4e8c\u4e2a\u6570\u636e\u6d41：\u4ece\u8282\u70b93\u5230\u8282\u70b90
                                        \n socket.SetSingleDevice (devs.Get (3)->GetIfIndex ());\/\/\u4f7f\u7528\u8282\u70b93\u7684\u8bbe\u5907
                                        \n socket.SetPhysicalAddress (devs.Get (0)->GetAddress ());\/\/\u76ee\u6807：\u8282\u70b90\u7684MAC\u5730\u5740
                                        \n socket.SetProtocol (3);\/\/\u534f\u8bae\u53f73
                                        \n onoff.SetAttribute ("Remote", AddressValue (socket));
                                        \n apps = onoff.Install (nodes.Get (3));\/\/\u5b89\u88c5\u5728\u8282\u70b93
                                        \n apps.Start (Seconds (1.0));
                                        \n apps.Stop (Seconds (10.0));<\/p>\n

                                        \/\/ \u521b\u5efa\u6570\u636e\u5305\u63a5\u6536\u5668（Packet Sink）
                                        \n PacketSinkHelper sink = PacketSinkHelper ("ns3::PacketSocketFactory",
                                        \n socket);
                                        \n apps = sink.Install (nodes.Get (0));\/\/\u5728\u8282\u70b90\u4e0a\u5b89\u88c5\u63a5\u53d7\u5176
                                        \n apps.Start (Seconds (0.0));
                                        \n apps.Stop (Seconds (20.0));<\/p>\n

                                        \/\/ While the below trace sink is hooked to all nodes (the wildcard "*")
                                        \n \/\/ only one packet sink (on node 0) is actually added above, so
                                        \n \/\/ only the receive events on node 0 will be traced
                                        \n \/\/\u8fde\u63a5\u8ddf\u8e2a\u56de\u8c03：\u5c06\u6240\u6709\u7684 PacketSink \u63a5\u6536\u4e8b\u4ef6\u8fde\u63a5\u5230 SinkRx \u56de\u8c03\u51fd\u6570
                                        \n Config::Connect ("\/NodeList\/*\/ApplicationList\/*\/$ns3::PacketSink\/Rx",
                                        \n MakeCallback (&SinkRx));<\/p>\n

                                        \/\/ Configure tracing of all enqueue, dequeue, and NetDevice receive events
                                        \n \/\/ Trace output will be sent to the csma-packet-socket.tr file
                                        \n NS_LOG_INFO ("Configure Tracing.");<\/p>\n

                                        \/\/\u542f\u7528ASCII\u8ddf\u8e2a：\u8bb0\u5f55\u6240\u6709\u8282\u70b9\u7684\u7f51\u7edc\u4e8b\u4ef6\u5230 ASCII \u6587\u4ef6
                                        \n AsciiTraceHelper ascii;
                                        \n csma.EnableAsciiAll (ascii.CreateFileStream ("csma-packet-socket.tr"));<\/p>\n

                                        \/\/\u8fd0\u884c\u6a21\u62df\u548c\u6e05\u7406
                                        \n NS_LOG_INFO ("Run Simulation.");
                                        \n Simulator::Run ();\/\/\u8fd0\u884c\u6a21\u62df
                                        \n Simulator::Destroy ();\/\/\u6e05\u7406\u6a21\u62df\u5668
                                        \n NS_LOG_INFO ("Done.");\/\/\u5173\u95ed\u8f93\u51fa\u6587\u4ef6<\/p>\n

                                        g_os.close ();<\/p>\n

                                        return 0;
                                        \n} <\/p>\n

                                        \u7a0b\u5e8f\u529f\u80fd\u4e0e\u6267\u884c\u903b\u8f91<\/h6>\n

                                        1\u3001\u4e3b\u8981\u529f\u80fd：<\/p>\n

                                          \n
                                        • \u00a0\u521b\u5efa\u7f51\u7edc\u62d3\u6251：4\u4e2a\u8282\u70b9\u901a\u8fc7\u5171\u4eabCSMA\u603b\u7ebf\u8fde\u63a5<\/li>\n
                                        • \u521b\u5efa\u4e24\u4e2a\u539f\u59cb\u6570\u636e\u5305\u6d41：<\/li>\n<\/ul>\n

                                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6d411：\u8282\u70b90–>\u8282\u70b91.\u4f7f\u7528\u534f\u8bae\u53f72，500kbps<\/p>\n

                                          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6d412：\u8282\u70b93 \u2192 \u8282\u70b90，\u4f7f\u7528\u534f\u8bae\u53f73，500 kbps<\/p>\n

                                            \n
                                          • \u6570\u636e\u5305\u63a5\u6536：\u5728\u8282\u70b90\u4e0a\u5b89\u88c5 PacketSink，\u63a5\u6536\u6765\u81ea\u8282\u70b93\u7684\u6570\u636e\u5305<\/li>\n
                                          • \u6570\u636e\u5305\u6536\u96c6：<\/li>\n<\/ul>\n

                                            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5c06\u63a5\u6536\u5230\u7684\u6570\u636e\u5305\u5927\u5c0f\u8bb0\u5f55\u5230 csma-packet-socket-sink.tr<\/p>\n

                                            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5c06\u7f51\u7edc\u4e8b\u4ef6\u8bb0\u5f55\u5230 csma-packet-socket.tr<\/p>\n

                                            2\u3001\u6267\u884c\u65f6\u95f4\u7ebf：<\/p>\n\n\n\n\n\n\n\n
                                            \u65f6\u95f4（\u79d2）<\/td>\n\u4e8b\u4ef6<\/td>\n<\/tr>\n
                                            0.0<\/td>\n\u8282\u70b90\u7684PacketSink\u5f00\u59cb\u76d1\u542c<\/td>\n<\/tr>\n
                                            1.0<\/td>\n\u8282\u70b90\u548c\u8282\u70b93\u5f00\u59cb\u53d1\u9001\u6570\u636e<\/td>\n<\/tr>\n
                                            10.0<\/td>\n\u8282\u70b90\u548c\u8282\u70b93\u505c\u6b62\u53d1\u9001\u6570\u636e<\/td>\n<\/tr>\n
                                            20.0<\/td>\n\u8282\u70b90\u7684PacketSink\u505c\u6b62\u76d1\u542c，\u6a21\u62df\u7ed3\u675f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                            3\u3001\u5173\u952e\u7279\u70b9：<\/p>\n

                                              \n
                                            • \u00a0\u4f7f\u7528\u539f\u59cb\u6570\u636e\u5305\u5957\u63a5\u5b57：\u4e0d\u4f9d\u8d56IP\u534f\u8bae\u6808，\u76f4\u63a5\u5728\u6570\u636e\u94fe\u8def\u5c42\u901a\u4fe1<\/li>\n
                                            • CSMA\/CD\u534f\u8bae：\u6a21\u62df\u4ee5\u592a\u7f51\u7684\u591a\u8def\u8bbf\u95ee\u7279\u6027<\/li>\n
                                            • \u4e24\u4e2a\u72ec\u7acb\u7684\u6570\u636e\u6d41：\u4f7f\u7528\u4e0d\u540c\u7684\u534f\u8bae\u53f7\u8fdb\u884c\u533a\u5206<\/li>\n
                                            • \u975e\u5bf9\u79f0\u901a\u4fe1：\u8282\u70b90\u65e2\u53d1\u9001\u53c8\u63a5\u6536\u3001\u8282\u70b91\u53ea\u63a5\u6536\u3001\u8282\u70b93\u53ea\u53d1\u9001\u3001\u8282\u70b92\u662f\u7a7a\u95f2\u8282\u70b9<\/li>\n<\/ul>\n

                                              4\u3001\u8f93\u51fa\u6587\u4ef6：<\/p>\n

                                                \n
                                              • \n

                                                csma-packet-socket-sink.tr：\u5305\u542b\u6240\u6709\u63a5\u6536\u5230\u7684\u6570\u636e\u5305\u5927\u5c0f<\/p>\n<\/li>\n

                                              • \n

                                                csma-packet-socket.tr：\u5305\u542b\u8be6\u7ec6\u7684\u7f51\u7edc\u4e8b\u4ef6（\u6392\u961f\u3001\u53d1\u9001\u3001\u63a5\u6536\u7b49）<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                                                \u76ee\u5f55
                                                \n\u4e00\u3001\u67b6\u6784\u4e0e\u811a\u672c
                                                \n1.1 \u6982\u51b5
                                                \n1.2 \u5efa\u7acb\u4e00\u4e2aUDP\u8fde\u63a5
                                                \n\u4e8c\u3001\u5185\u7f6e\u5e94\u7528：Application
                                                \n2.1\u5185\u7f6e\u5e94\u7528
                                                \n2.2 \u5e94\u7528\u5c42\u534f\u8bae\u52a9\u624b\u7c7b\u4f7f\u7528\u7684\u57fa\u672c\u6b65\u9aa4： 1. \u521b\u5efa\u52a9\u624b\u7c7b\u5bf9\u8c61：\u6307\u5b9a\u4e24\u4e2a\u5f62\u53c2 2. \u914d\u7f6e\u4e13\u5c5e\u5c5e\u6027（\u53ef\u9009） 3. \u5728\u6307\u5b9a\u7ed3\u70b9\u4e0a\u5b89\u88c5\u5e94\u7528\u5c42\u534f\u8bae 4. \u8bbe\u7f6e\u5e94\u7528\u5c42\u534f\u8bae\u7684\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4 5. \u914d\u7f6etrace\u53d8\u91cf（\u53ef\u9009）
                                                \n2.3 \u5206\u7ec4\u4ea7\u751f\u5668
                                                \n2.3.1. \u5206<\/p>\n","protected":false},"author":2,"featured_media":69498,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[7315,78],"topic":[],"class_list":["post-69499","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-ns3","tag-78"],"yoast_head":"\nns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/69499.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u76ee\u5f55 \u4e00\u3001\u67b6\u6784\u4e0e\u811a\u672c 1.1 \u6982\u51b5 1.2 \u5efa\u7acb\u4e00\u4e2aUDP\u8fde\u63a5 \u4e8c\u3001\u5185\u7f6e\u5e94\u7528：Application 2.1\u5185\u7f6e\u5e94\u7528 2.2 \u5e94\u7528\u5c42\u534f\u8bae\u52a9\u624b\u7c7b\u4f7f\u7528\u7684\u57fa\u672c\u6b65\u9aa4： 1. \u521b\u5efa\u52a9\u624b\u7c7b\u5bf9\u8c61：\u6307\u5b9a\u4e24\u4e2a\u5f62\u53c2 2. \u914d\u7f6e\u4e13\u5c5e\u5c5e\u6027（\u53ef\u9009） 3. \u5728\u6307\u5b9a\u7ed3\u70b9\u4e0a\u5b89\u88c5\u5e94\u7528\u5c42\u534f\u8bae 4. \u8bbe\u7f6e\u5e94\u7528\u5c42\u534f\u8bae\u7684\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4 5. \u914d\u7f6etrace\u53d8\u91cf（\u53ef\u9009） 2.3 \u5206\u7ec4\u4ea7\u751f\u5668 2.3.1. \u5206\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/69499.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-31T11:16:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260131111654-697de4a651de9.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/69499.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/69499.html\",\"name\":\"ns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-01-31T11:16:55+00:00\",\"dateModified\":\"2026-01-31T11:16:55+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/69499.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/69499.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/69499.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"ns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/69499.html","og_locale":"zh_CN","og_type":"article","og_title":"ns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u76ee\u5f55 \u4e00\u3001\u67b6\u6784\u4e0e\u811a\u672c 1.1 \u6982\u51b5 1.2 \u5efa\u7acb\u4e00\u4e2aUDP\u8fde\u63a5 \u4e8c\u3001\u5185\u7f6e\u5e94\u7528：Application 2.1\u5185\u7f6e\u5e94\u7528 2.2 \u5e94\u7528\u5c42\u534f\u8bae\u52a9\u624b\u7c7b\u4f7f\u7528\u7684\u57fa\u672c\u6b65\u9aa4： 1. \u521b\u5efa\u52a9\u624b\u7c7b\u5bf9\u8c61：\u6307\u5b9a\u4e24\u4e2a\u5f62\u53c2 2. \u914d\u7f6e\u4e13\u5c5e\u5c5e\u6027（\u53ef\u9009） 3. \u5728\u6307\u5b9a\u7ed3\u70b9\u4e0a\u5b89\u88c5\u5e94\u7528\u5c42\u534f\u8bae 4. \u8bbe\u7f6e\u5e94\u7528\u5c42\u534f\u8bae\u7684\u542f\u52a8\u548c\u505c\u6b62\u65f6\u95f4 5. \u914d\u7f6etrace\u53d8\u91cf（\u53ef\u9009） 2.3 \u5206\u7ec4\u4ea7\u751f\u5668 2.3.1. \u5206","og_url":"https:\/\/www.wsisp.com\/helps\/69499.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-01-31T11:16:55+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260131111654-697de4a651de9.png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"12 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/69499.html","url":"https:\/\/www.wsisp.com\/helps\/69499.html","name":"ns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-01-31T11:16:55+00:00","dateModified":"2026-01-31T11:16:55+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/69499.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/69499.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/69499.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"ns-3\u4eff\u771f\u4e4b\u5e94\u7528\u5c42\uff08\u4e00\uff09"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/69499","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=69499"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/69499\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/69498"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=69499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=69499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=69499"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=69499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}