A Discrete-Event Network Simulator
API
red-vs-nlred.cc
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1/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2016 NITK Surathkal
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Authors: Phani Kiran S V S <phanikiran.harithas@gmail.com>
19 * Nichit Bodhak Goel <nichit93@gmail.com>
20 * Mohit P. Tahiliani <tahiliani@nitk.edu.in>
21 *
22 */
23
24#include "ns3/core-module.h"
25#include "ns3/network-module.h"
26#include "ns3/internet-module.h"
27#include "ns3/point-to-point-module.h"
28#include "ns3/applications-module.h"
29#include "ns3/point-to-point-layout-module.h"
30#include "ns3/traffic-control-module.h"
31
32#include <iostream>
33#include <iomanip>
34#include <map>
35
36using namespace ns3;
37
38int main (int argc, char *argv[])
39{
40 uint32_t nLeaf = 10;
41 uint32_t maxPackets = 100;
42 bool modeBytes = false;
43 uint32_t queueDiscLimitPackets = 1000;
44 double minTh = 5;
45 double maxTh = 15;
46 uint32_t pktSize = 512;
47 std::string appDataRate = "10Mbps";
48 std::string queueDiscType = "RED";
49 uint16_t port = 5001;
50 std::string bottleNeckLinkBw = "1Mbps";
51 std::string bottleNeckLinkDelay = "50ms";
52
53 CommandLine cmd (__FILE__);
54 cmd.AddValue ("nLeaf", "Number of left and right side leaf nodes", nLeaf);
55 cmd.AddValue ("maxPackets","Max Packets allowed in the device queue", maxPackets);
56 cmd.AddValue ("queueDiscLimitPackets","Max Packets allowed in the queue disc", queueDiscLimitPackets);
57 cmd.AddValue ("queueDiscType", "Set Queue disc type to RED or NLRED", queueDiscType);
58 cmd.AddValue ("appPktSize", "Set OnOff App Packet Size", pktSize);
59 cmd.AddValue ("appDataRate", "Set OnOff App DataRate", appDataRate);
60 cmd.AddValue ("modeBytes", "Set Queue disc mode to Packets (false) or bytes (true)", modeBytes);
61
62 cmd.AddValue ("redMinTh", "RED queue minimum threshold", minTh);
63 cmd.AddValue ("redMaxTh", "RED queue maximum threshold", maxTh);
64 cmd.Parse (argc,argv);
65
66 if ((queueDiscType != "RED") && (queueDiscType != "NLRED"))
67 {
68 std::cout << "Invalid queue disc type: Use --queueDiscType=RED or --queueDiscType=NLRED" << std::endl;
69 exit (1);
70 }
71
72 Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (pktSize));
73 Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue (appDataRate));
74
75 Config::SetDefault ("ns3::DropTailQueue<Packet>::MaxSize",
77
78 if (!modeBytes)
79 {
80 Config::SetDefault ("ns3::RedQueueDisc::MaxSize",
81 QueueSizeValue (QueueSize (QueueSizeUnit::PACKETS, queueDiscLimitPackets)));
82 }
83 else
84 {
85 Config::SetDefault ("ns3::RedQueueDisc::MaxSize",
86 QueueSizeValue (QueueSize (QueueSizeUnit::BYTES, queueDiscLimitPackets * pktSize)));
87 minTh *= pktSize;
88 maxTh *= pktSize;
89 }
90
91 Config::SetDefault ("ns3::RedQueueDisc::MinTh", DoubleValue (minTh));
92 Config::SetDefault ("ns3::RedQueueDisc::MaxTh", DoubleValue (maxTh));
93 Config::SetDefault ("ns3::RedQueueDisc::LinkBandwidth", StringValue (bottleNeckLinkBw));
94 Config::SetDefault ("ns3::RedQueueDisc::LinkDelay", StringValue (bottleNeckLinkDelay));
95 Config::SetDefault ("ns3::RedQueueDisc::MeanPktSize", UintegerValue (pktSize));
96
97 if (queueDiscType == "NLRED")
98 {
99 // Turn on NLRED
100 Config::SetDefault ("ns3::RedQueueDisc::NLRED", BooleanValue (true));
101 }
102
103 // Create the point-to-point link helpers
104 PointToPointHelper bottleNeckLink;
105 bottleNeckLink.SetDeviceAttribute ("DataRate", StringValue (bottleNeckLinkBw));
106 bottleNeckLink.SetChannelAttribute ("Delay", StringValue (bottleNeckLinkDelay));
107
108 PointToPointHelper pointToPointLeaf;
109 pointToPointLeaf.SetDeviceAttribute ("DataRate", StringValue ("10Mbps"));
110 pointToPointLeaf.SetChannelAttribute ("Delay", StringValue ("1ms"));
111
112 PointToPointDumbbellHelper d (nLeaf, pointToPointLeaf,
113 nLeaf, pointToPointLeaf,
114 bottleNeckLink);
115
116 // Install Stack
118 for (uint32_t i = 0; i < d.LeftCount (); ++i)
119 {
120 stack.Install (d.GetLeft (i));
121 }
122 for (uint32_t i = 0; i < d.RightCount (); ++i)
123 {
124 stack.Install (d.GetRight (i));
125 }
126
127 stack.Install (d.GetLeft ());
128 stack.Install (d.GetRight ());
129 TrafficControlHelper tchBottleneck;
130 QueueDiscContainer queueDiscs;
131 tchBottleneck.SetRootQueueDisc ("ns3::RedQueueDisc");
132 tchBottleneck.Install (d.GetLeft ()->GetDevice (0));
133 queueDiscs = tchBottleneck.Install (d.GetRight ()->GetDevice (0));
134
135 // Assign IP Addresses
136 d.AssignIpv4Addresses (Ipv4AddressHelper ("10.1.1.0", "255.255.255.0"),
137 Ipv4AddressHelper ("10.2.1.0", "255.255.255.0"),
138 Ipv4AddressHelper ("10.3.1.0", "255.255.255.0"));
139
140 // Install on/off app on all right side nodes
141 OnOffHelper clientHelper ("ns3::TcpSocketFactory", Address ());
142 clientHelper.SetAttribute ("OnTime", StringValue ("ns3::UniformRandomVariable[Min=0.|Max=1.]"));
143 clientHelper.SetAttribute ("OffTime", StringValue ("ns3::UniformRandomVariable[Min=0.|Max=1.]"));
144 Address sinkLocalAddress (InetSocketAddress (Ipv4Address::GetAny (), port));
145 PacketSinkHelper packetSinkHelper ("ns3::TcpSocketFactory", sinkLocalAddress);
146 ApplicationContainer sinkApps;
147 for (uint32_t i = 0; i < d.LeftCount (); ++i)
148 {
149 sinkApps.Add (packetSinkHelper.Install (d.GetLeft (i)));
150 }
151 sinkApps.Start (Seconds (0.0));
152 sinkApps.Stop (Seconds (30.0));
153
155 for (uint32_t i = 0; i < d.RightCount (); ++i)
156 {
157 // Create an on/off app sending packets to the left side
158 AddressValue remoteAddress (InetSocketAddress (d.GetLeftIpv4Address (i), port));
159 clientHelper.SetAttribute ("Remote", remoteAddress);
160 clientApps.Add (clientHelper.Install (d.GetRight (i)));
161 }
162 clientApps.Start (Seconds (1.0)); // Start 1 second after sink
163 clientApps.Stop (Seconds (15.0)); // Stop before the sink
164
165 Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
166
167 std::cout << "Running the simulation" << std::endl;
168 Simulator::Run ();
169
170 QueueDisc::Stats st = queueDiscs.Get (0)->GetStats ();
171
172 if (st.GetNDroppedPackets (RedQueueDisc::UNFORCED_DROP) == 0)
173 {
174 std::cout << "There should be some unforced drops" << std::endl;
175 exit (1);
176 }
177
178 if (st.GetNDroppedPackets (QueueDisc::INTERNAL_QUEUE_DROP) != 0)
179 {
180 std::cout << "There should be zero drops due to queue full" << std::endl;
181 exit (1);
182 }
183
184 std::cout << "*** Stats from the bottleneck queue disc ***" << std::endl;
185 std::cout << st << std::endl;
186 std::cout << "Destroying the simulation" << std::endl;
187
188 Simulator::Destroy ();
189 return 0;
190}
a polymophic address class
Definition: address.h:91
AttributeValue implementation for Address.
holds a vector of ns3::Application pointers.
void Start(Time start)
Arrange for all of the Applications in this container to Start() at the Time given as a parameter.
void Add(ApplicationContainer other)
Append the contents of another ApplicationContainer to the end of this container.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
AttributeValue implementation for Boolean.
Definition: boolean.h:37
Parse command-line arguments.
Definition: command-line.h:229
This class can be used to hold variables of floating point type such as 'double' or 'float'.
Definition: double.h:41
an Inet address class
aggregate IP/TCP/UDP functionality to existing Nodes.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
A helper to make it easier to instantiate an ns3::OnOffApplication on a set of nodes.
Definition: on-off-helper.h:43
A helper to make it easier to instantiate an ns3::PacketSinkApplication on a set of nodes.
A helper to make it easier to create a dumbbell topology with p2p links.
Build a set of PointToPointNetDevice objects.
void SetDeviceAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each NetDevice created by the helper.
void SetChannelAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each Channel created by the helper.
Holds a vector of ns3::QueueDisc pointers.
Ptr< QueueDisc > Get(std::size_t i) const
Get the Ptr<QueueDisc> stored in this container at a given index.
const Stats & GetStats(void)
Retrieve all the collected statistics.
Definition: queue-disc.cc:419
Class for representing queue sizes.
Definition: queue-size.h:95
AttributeValue implementation for QueueSize.
Hold variables of type string.
Definition: string.h:41
Build a set of QueueDisc objects.
QueueDiscContainer Install(NetDeviceContainer c)
uint16_t SetRootQueueDisc(const std::string &type, Args &&... args)
Helper function used to set a root queue disc of the given type and with the given attributes.
Hold an unsigned integer type.
Definition: uinteger.h:44
uint16_t port
Definition: dsdv-manet.cc:45
void SetDefault(std::string name, const AttributeValue &value)
Definition: config.cc:849
@ BYTES
Use number of bytes for queue size.
Definition: queue-size.h:45
@ PACKETS
Use number of packets for queue size.
Definition: queue-size.h:44
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1244
clientApps
Definition: first.py:61
stack
Definition: first.py:41
Every class exported by the ns3 library is enclosed in the ns3 namespace.
cmd
Definition: second.py:35
Structure that keeps the queue disc statistics.
Definition: queue-disc.h:186
uint32_t GetNDroppedPackets(std::string reason) const
Get the number of packets dropped for the given reason.
Definition: queue-disc.cc:109
uint32_t pktSize
packet size used for the simulation (in bytes)
Definition: wifi-bianchi.cc:89