72   csma.SetChannelParameter ("Delay", TimeValue (MilliSeconds(2)));

    72   csma.SetChannelParameter ("Delay", TimeValue (MilliSeconds(2)));

    73 

    73 

    74   NetDeviceContainer n0 = csma.Install (c0);

    74   NetDeviceContainer n0 = csma.Install (c0);

    75   NetDeviceContainer n1 = csma.Install (c1);

    75   NetDeviceContainer n1 = csma.Install (c1);

    76 

    76 

    78   InternetStackHelper internet;

    77   InternetStackHelper internet;

    81 

    79 

    82   NS_LOG_INFO ("Assign IP Addresses.");

    80   NS_LOG_INFO ("Assign IP Addresses.");

    83   Ipv4AddressHelper ipv4;

    81   Ipv4AddressHelper ipv4;

    84   ipv4.SetBase ("10.1.0.0", "255.255.255.0");

    82   ipv4.SetBase ("10.1.0.0", "255.255.255.0");

    85   ipv4.Assign (n0);

    83   ipv4.Assign (n0);