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make star topologies easier to create

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This commit is contained in:
Craig Dowell
2008-10-24 15:50:52 -07:00
parent 6041ad024c
commit f18f28985f
6 changed files with 234 additions and 18 deletions
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153
examples/star.cc Normal file
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@@ -0,0 +1,153 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "ns3/core-module.h"
#include "ns3/simulator-module.h"
#include "ns3/node-module.h"
#include "ns3/helper-module.h"
#include "ns3/global-route-manager.h"
// Network topology (default)
//
// n2 n3 n4 .
// \ | / .
// \|/ .
// n1--- n0---n5 .
// /|\ .
// / | \ .
// n8 n7 n6 .
//
using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("Star");
int
main (int argc, char *argv[])
{
//
// Make the random number generators generate reproducible results.
//
RandomVariable::UseGlobalSeed (1, 1, 2, 3, 5, 8);
//
// Set up some default values for the simulation.
//
Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (137));
// ??? try and stick 15kb/s into the data rate
Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("14kb/s"));
//
// Default number of nodes in the star. Overridable by command line argument.
//
uint32_t nNodes = 9;
CommandLine cmd;
cmd.AddValue("nNodes", "Number of nodes to place in the star", nNodes);
cmd.Parse (argc, argv);
NS_LOG_INFO ("Create nodes.");
NodeContainer hubNode;
NodeContainer spokeNodes;
hubNode.Create (1);
Ptr<Node> hub = hubNode.Get (0);
spokeNodes.Create (nNodes - 1);
NS_LOG_INFO ("Install internet stack on all nodes.");
InternetStackHelper internet;
internet.Install (NodeContainer (hubNode, spokeNodes));
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
pointToPoint.SetChannelAttribute ("Delay", StringValue ("2ms"));
NS_LOG_INFO ("Build star topology.");
NetDeviceContainer hubDevices, spokeDevices;
pointToPoint.InstallStar (hubNode.Get (0), spokeNodes, hubDevices, spokeDevices);
NS_LOG_INFO ("Assign IP Addresses.");
Ipv4AddressHelper address;
//
// Assign IPv4 interfaces and IP addresses to the devices we previously
// created. Keep track of the resulting addresses, one for the addresses
// of the hub node, and one for addresses on the spoke nodes. Despite the
// name of the class, what is visible to clients is really the address.
//
Ipv4InterfaceContainer hubAddresses;
Ipv4InterfaceContainer spokeAddresses;
for(uint32_t i = 0; i < spokeNodes.GetN (); ++i)
{
std::ostringstream subnet;
subnet << "10.1.1." << (i << 2);
NS_LOG_INFO ("Assign IP Addresses for point-to-point subnet " << subnet.str ());
address.SetBase (subnet.str ().c_str (), "255.255.255.252");
hubAddresses.Add (address.Assign (hubDevices.Get (i)));
spokeAddresses.Add (address.Assign (spokeDevices.Get (i)));
}
NS_LOG_INFO ("Create applications.");
//
// Create a packet sink on the star "hub" to receive packets.
//
uint16_t port = 50000;
Address hubLocalAddress (InetSocketAddress (Ipv4Address::GetAny (), port));
PacketSinkHelper packetSinkHelper ("ns3::TcpSocketFactory", hubLocalAddress);
ApplicationContainer hubApp = packetSinkHelper.Install (hubNode);
hubApp.Start (Seconds (1.0));
hubApp.Stop (Seconds (10.0));
//
// Create OnOff applications to send TCP to the hub, one on each spoke node.
//
OnOffHelper onOffHelper ("ns3::TcpSocketFactory", Address ());
onOffHelper.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (1)));
onOffHelper.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0)));
ApplicationContainer spokeApps;
for (uint32_t i = 0; i < spokeNodes.GetN (); ++i)
{
AddressValue remoteAddress (InetSocketAddress (hubAddresses.GetAddress (i), port));
onOffHelper.SetAttribute ("Remote", remoteAddress);
spokeApps.Add (onOffHelper.Install (spokeNodes.Get (i)));
}
spokeApps.Start (Seconds (1.0));
spokeApps.Stop (Seconds (10.0));
NS_LOG_INFO ("Enable static global routing.");
//
// Turn on global static routing so we can actually be routed across the star.
//
GlobalRouteManager::PopulateRoutingTables ();
NS_LOG_INFO ("Enable pcap tracing.");
//
// Do pcap tracing on all devices on all nodes.
//
PointToPointHelper::EnablePcapAll ("star");
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
return 0;
}

38
examples/wscript
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@@ -5,73 +5,77 @@ def build(bld):
obj.source = 'hello-simulator.cc'
obj = bld.create_ns3_program('mixed-wireless',
['core', 'simulator', 'mobility', 'wifi', 'point-to-point', 'internet-stack'])
['core', 'simulator', 'mobility', 'wifi', 'point-to-point', 'internet-stack'])
obj.source = 'mixed-wireless.cc'
obj = bld.create_ns3_program('simple-global-routing',
['point-to-point', 'internet-stack', 'global-routing'])
['point-to-point', 'internet-stack', 'global-routing'])
obj.source = 'simple-global-routing.cc'
obj = bld.create_ns3_program('simple-alternate-routing',
['point-to-point', 'internet-stack', 'global-routing'])
['point-to-point', 'internet-stack', 'global-routing'])
obj.source = 'simple-alternate-routing.cc'
obj = bld.create_ns3_program('simple-error-model',
['point-to-point', 'internet-stack'])
['point-to-point', 'internet-stack'])
obj.source = 'simple-error-model.cc'
obj = bld.create_ns3_program('csma-one-subnet',
['csma', 'internet-stack'])
['csma', 'internet-stack'])
obj.source = 'csma-one-subnet.cc'
obj = bld.create_ns3_program('csma-bridge',
['bridge', 'csma', 'internet-stack'])
['bridge', 'csma', 'internet-stack'])
obj.source = 'csma-bridge.cc'
obj = bld.create_ns3_program('udp-echo',
['csma', 'internet-stack'])
['csma', 'internet-stack'])
obj.source = 'udp-echo.cc'
obj = bld.create_ns3_program('realtime-udp-echo',
['csma', 'internet-stack'])
['csma', 'internet-stack'])
obj.source = 'realtime-udp-echo.cc'
obj = bld.create_ns3_program('csma-broadcast',
['csma', 'internet-stack'])
['csma', 'internet-stack'])
obj.source = 'csma-broadcast.cc'
obj = bld.create_ns3_program('csma-packet-socket',
['csma', 'internet-stack'])
['csma', 'internet-stack'])
obj.source = 'csma-packet-socket.cc'
obj = bld.create_ns3_program('csma-multicast',
['csma', 'internet-stack'])
['csma', 'internet-stack'])
obj.source = 'csma-multicast.cc'
obj = bld.create_ns3_program( 'mixed-global-routing',
['point-to-point', 'internet-stack', 'global-routing' , 'csma-cd'])
['point-to-point', 'internet-stack', 'global-routing' , 'csma-cd'])
obj.source = 'mixed-global-routing.cc'
obj = bld.create_ns3_program('simple-point-to-point-olsr',
['point-to-point', 'internet-stack', 'olsr'])
['point-to-point', 'internet-stack', 'olsr'])
obj.source = 'simple-point-to-point-olsr.cc'
obj = bld.create_ns3_program('tcp-large-transfer',
['point-to-point', 'internet-stack'])
['point-to-point', 'internet-stack'])
obj.source = 'tcp-large-transfer.cc'
obj = bld.create_ns3_program('tcp-nsc-lfn',
['point-to-point', 'internet-stack'])
['point-to-point', 'internet-stack'])
obj.source = 'tcp-nsc-lfn.cc'
obj = bld.create_ns3_program('tcp-nsc-zoo',
['csma', 'internet-stack'])
['csma', 'internet-stack'])
obj.source = 'tcp-nsc-zoo.cc'
obj = bld.create_ns3_program('tcp-star-server',
['point-to-point', 'internet-stack'])
['point-to-point', 'internet-stack'])
obj.source = 'tcp-star-server.cc'
obj = bld.create_ns3_program('star',
['point-to-point', 'internet-stack'])
obj.source = 'star.cc'
obj = bld.create_ns3_program('wifi-adhoc',
['core', 'simulator', 'mobility', 'wifi'])
obj.source = 'wifi-adhoc.cc'

10
src/helper/ipv4-interface-container.cc
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@@ -6,11 +6,21 @@ namespace ns3 {
Ipv4InterfaceContainer::Ipv4InterfaceContainer ()
{}
void
Ipv4InterfaceContainer::Add (Ipv4InterfaceContainer other)
{
for (InterfaceVector::const_iterator i = other.m_interfaces.begin (); i != other.m_interfaces.end (); i++)
{
m_interfaces.push_back (*i);
}
}
uint32_t
Ipv4InterfaceContainer::GetN (void) const
{
return m_interfaces.size ();
}
Ipv4Address
Ipv4InterfaceContainer::GetAddress (uint32_t i) const
{

9
src/helper/ipv4-interface-container.h
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@@ -20,6 +20,11 @@ public:
*/
Ipv4InterfaceContainer ();
/**
* Concatenate the entries in the other container with ours.
*/
void Add (Ipv4InterfaceContainer other);
/**
* \returns the number of interfaces stored in this Ipv4InterfaceContainer.
*/
@@ -31,7 +36,9 @@ public:
void Add (Ptr<Ipv4> ipv4, uint32_t interface);
private:
std::vector<std::pair<Ptr<Ipv4>,uint32_t> > m_interfaces;
typedef std::vector<std::pair<Ptr<Ipv4>,uint32_t> > InterfaceVector;
InterfaceVector m_interfaces;
};
} // namespace ns3

13
src/helper/point-to-point-helper.cc
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@@ -172,6 +172,7 @@ PointToPointHelper::Install (NodeContainer c)
NS_ASSERT (c.GetN () == 2);
return Install (c.Get (0), c.Get (1));
}
NetDeviceContainer
PointToPointHelper::Install (Ptr<Node> a, Ptr<Node> b)
{
@@ -196,6 +197,18 @@ PointToPointHelper::Install (Ptr<Node> a, Ptr<Node> b)
return container;
}
void
PointToPointHelper::InstallStar (Ptr<Node> hub, NodeContainer spokes,
NetDeviceContainer& hubDevices, NetDeviceContainer& spokeDevices)
{
for (uint32_t i = 0; i < spokes.GetN (); ++i)
{
NetDeviceContainer nd = Install (hub, spokes.Get (i));
hubDevices.Add (nd.Get (0));
spokeDevices.Add (nd.Get (1));
}
}
void
PointToPointHelper::EnqueueEvent (Ptr<PcapWriter> writer, Ptr<const Packet> packet)
{

29
src/helper/point-to-point-helper.h
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@@ -170,6 +170,7 @@ public:
* ns3::NetDevice with the ns3::Node and ns3::PointToPointChannel.
*/
NetDeviceContainer Install (NodeContainer c);
/**
* \param a first node
* \param b second node
@@ -178,6 +179,34 @@ public:
*/
NetDeviceContainer Install (Ptr<Node> a, Ptr<Node> b);
/**
* \brief Make a star network topology.
*
* Given a pointer to a node that will become the hub of the star, and a
* NodeContainer containing pointers to the nodes that will become the
* spokes; we construct point to point net devices on the hub (corresponding
* to the spokes) and store them in the hubDevices NetDeviceContainer. We
* add a net device to each spoke node and store them in the spokeDevices
* NetDeviceContainer. A point-to-point channel is created for each spoke.
*
* The ordering of the devices in the hubDevices container is according to
* the order of the spokes container -- that is, hubDevices[0] will be the
* net device used on the hub that talks to spokes[0]. the container entry
* spokeDevices[0] will have the device that hubDevices[0] talks to -- those
* two devices are the ones that connect hub to spokes[0].
*
* \param hub The central node of the star network
* \param spokes A NodeContainer of the nodes that will be the spoke (leaf)
* nodes
* \param hubDevices A NetDeviceContainer that will be filled with pointers
* to the point-to-point net devices created on the hub.
* \param spokeDevices A NetDeviceContainer that will be filled with pointers
* to the point-to-point net devices created on each of
* the spokes.
*/
void InstallStar (Ptr<Node> hub, NodeContainer spokes,
NetDeviceContainer& hubDevices, NetDeviceContainer& spokeDevices);
private:
void EnablePcap (Ptr<Node> node, Ptr<NetDevice> device, Ptr<Queue> queue);
void EnableAscii (Ptr<Node> node, Ptr<NetDevice> device);