A Discrete-Event Network Simulator
API
rip-simple-network.cc
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1/*
2 * Copyright (c) 2016 Universita' di Firenze, Italy
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation;
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 * Author: Tommaso Pecorella <tommaso.pecorella@unifi.it>
18 */
19
20// Network topology
21//
22// SRC
23// |<=== source network
24// A-----B
25// \ / \ all networks have cost 1, except
26// \ / | for the direct link from C to D, which
27// C / has cost 10
28// | /
29// |/
30// D
31// |<=== target network
32// DST
33//
34//
35// A, B, C and D are RIPng routers.
36// A and D are configured with static addresses.
37// SRC and DST will exchange packets.
38//
39// After about 3 seconds, the topology is built, and Echo Reply will be received.
40// After 40 seconds, the link between B and D will break, causing a route failure.
41// After 44 seconds from the failure, the routers will recovery from the failure.
42// Split Horizoning should affect the recovery time, but it is not. See the manual
43// for an explanation of this effect.
44//
45// If "showPings" is enabled, the user will see:
46// 1) if the ping has been acknowledged
47// 2) if a Destination Unreachable has been received by the sender
48// 3) nothing, when the Echo Request has been received by the destination but
49// the Echo Reply is unable to reach the sender.
50// Examining the .pcap files with Wireshark can confirm this effect.
51
52#include "ns3/core-module.h"
53#include "ns3/csma-module.h"
54#include "ns3/internet-apps-module.h"
55#include "ns3/internet-module.h"
56#include "ns3/ipv4-routing-table-entry.h"
57#include "ns3/ipv4-static-routing-helper.h"
58
59#include <fstream>
60
61using namespace ns3;
62
63NS_LOG_COMPONENT_DEFINE("RipSimpleRouting");
64
65void
66TearDownLink(Ptr<Node> nodeA, Ptr<Node> nodeB, uint32_t interfaceA, uint32_t interfaceB)
67{
68 nodeA->GetObject<Ipv4>()->SetDown(interfaceA);
69 nodeB->GetObject<Ipv4>()->SetDown(interfaceB);
70}
71
72int
73main(int argc, char** argv)
74{
75 bool verbose = false;
76 bool printRoutingTables = false;
77 bool showPings = false;
78 std::string SplitHorizon("PoisonReverse");
79
80 CommandLine cmd(__FILE__);
81 cmd.AddValue("verbose", "turn on log components", verbose);
82 cmd.AddValue("printRoutingTables",
83 "Print routing tables at 30, 60 and 90 seconds",
84 printRoutingTables);
85 cmd.AddValue("showPings", "Show Ping6 reception", showPings);
86 cmd.AddValue("splitHorizonStrategy",
87 "Split Horizon strategy to use (NoSplitHorizon, SplitHorizon, PoisonReverse)",
88 SplitHorizon);
89 cmd.Parse(argc, argv);
90
91 if (verbose)
92 {
94 LogComponentEnable("RipSimpleRouting", LOG_LEVEL_INFO);
96 LogComponentEnable("Ipv4Interface", LOG_LEVEL_ALL);
97 LogComponentEnable("Icmpv4L4Protocol", LOG_LEVEL_ALL);
98 LogComponentEnable("Ipv4L3Protocol", LOG_LEVEL_ALL);
101 }
102
103 if (SplitHorizon == "NoSplitHorizon")
104 {
105 Config::SetDefault("ns3::Rip::SplitHorizon", EnumValue(RipNg::NO_SPLIT_HORIZON));
106 }
107 else if (SplitHorizon == "SplitHorizon")
108 {
109 Config::SetDefault("ns3::Rip::SplitHorizon", EnumValue(RipNg::SPLIT_HORIZON));
110 }
111 else
112 {
113 Config::SetDefault("ns3::Rip::SplitHorizon", EnumValue(RipNg::POISON_REVERSE));
114 }
115
116 NS_LOG_INFO("Create nodes.");
117 Ptr<Node> src = CreateObject<Node>();
118 Names::Add("SrcNode", src);
119 Ptr<Node> dst = CreateObject<Node>();
120 Names::Add("DstNode", dst);
121 Ptr<Node> a = CreateObject<Node>();
122 Names::Add("RouterA", a);
123 Ptr<Node> b = CreateObject<Node>();
124 Names::Add("RouterB", b);
125 Ptr<Node> c = CreateObject<Node>();
126 Names::Add("RouterC", c);
127 Ptr<Node> d = CreateObject<Node>();
128 Names::Add("RouterD", d);
129 NodeContainer net1(src, a);
130 NodeContainer net2(a, b);
131 NodeContainer net3(a, c);
132 NodeContainer net4(b, c);
133 NodeContainer net5(c, d);
134 NodeContainer net6(b, d);
135 NodeContainer net7(d, dst);
136 NodeContainer routers(a, b, c, d);
137 NodeContainer nodes(src, dst);
138
139 NS_LOG_INFO("Create channels.");
141 csma.SetChannelAttribute("DataRate", DataRateValue(5000000));
142 csma.SetChannelAttribute("Delay", TimeValue(MilliSeconds(2)));
143 NetDeviceContainer ndc1 = csma.Install(net1);
144 NetDeviceContainer ndc2 = csma.Install(net2);
145 NetDeviceContainer ndc3 = csma.Install(net3);
146 NetDeviceContainer ndc4 = csma.Install(net4);
147 NetDeviceContainer ndc5 = csma.Install(net5);
148 NetDeviceContainer ndc6 = csma.Install(net6);
149 NetDeviceContainer ndc7 = csma.Install(net7);
150
151 NS_LOG_INFO("Create IPv4 and routing");
152 RipHelper ripRouting;
153
154 // Rule of thumb:
155 // Interfaces are added sequentially, starting from 0
156 // However, interface 0 is always the loopback...
157 ripRouting.ExcludeInterface(a, 1);
158 ripRouting.ExcludeInterface(d, 3);
159
160 ripRouting.SetInterfaceMetric(c, 3, 10);
161 ripRouting.SetInterfaceMetric(d, 1, 10);
162
164 listRH.Add(ripRouting, 0);
165 // Ipv4StaticRoutingHelper staticRh;
166 // listRH.Add (staticRh, 5);
167
168 InternetStackHelper internet;
169 internet.SetIpv6StackInstall(false);
170 internet.SetRoutingHelper(listRH);
171 internet.Install(routers);
172
173 InternetStackHelper internetNodes;
174 internetNodes.SetIpv6StackInstall(false);
175 internetNodes.Install(nodes);
176
177 // Assign addresses.
178 // The source and destination networks have global addresses
179 // The "core" network just needs link-local addresses for routing.
180 // We assign global addresses to the routers as well to receive
181 // ICMPv6 errors.
182 NS_LOG_INFO("Assign IPv4 Addresses.");
184
185 ipv4.SetBase(Ipv4Address("10.0.0.0"), Ipv4Mask("255.255.255.0"));
186 Ipv4InterfaceContainer iic1 = ipv4.Assign(ndc1);
187
188 ipv4.SetBase(Ipv4Address("10.0.1.0"), Ipv4Mask("255.255.255.0"));
189 Ipv4InterfaceContainer iic2 = ipv4.Assign(ndc2);
190
191 ipv4.SetBase(Ipv4Address("10.0.2.0"), Ipv4Mask("255.255.255.0"));
192 Ipv4InterfaceContainer iic3 = ipv4.Assign(ndc3);
193
194 ipv4.SetBase(Ipv4Address("10.0.3.0"), Ipv4Mask("255.255.255.0"));
195 Ipv4InterfaceContainer iic4 = ipv4.Assign(ndc4);
196
197 ipv4.SetBase(Ipv4Address("10.0.4.0"), Ipv4Mask("255.255.255.0"));
198 Ipv4InterfaceContainer iic5 = ipv4.Assign(ndc5);
199
200 ipv4.SetBase(Ipv4Address("10.0.5.0"), Ipv4Mask("255.255.255.0"));
201 Ipv4InterfaceContainer iic6 = ipv4.Assign(ndc6);
202
203 ipv4.SetBase(Ipv4Address("10.0.6.0"), Ipv4Mask("255.255.255.0"));
204 Ipv4InterfaceContainer iic7 = ipv4.Assign(ndc7);
205
206 Ptr<Ipv4StaticRouting> staticRouting;
207 staticRouting = Ipv4RoutingHelper::GetRouting<Ipv4StaticRouting>(
209 staticRouting->SetDefaultRoute("10.0.0.2", 1);
210 staticRouting = Ipv4RoutingHelper::GetRouting<Ipv4StaticRouting>(
212 staticRouting->SetDefaultRoute("10.0.6.1", 1);
213
214 if (printRoutingTables)
215 {
216 Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper>(&std::cout);
217
218 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(30.0), a, routingStream);
219 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(30.0), b, routingStream);
220 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(30.0), c, routingStream);
221 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(30.0), d, routingStream);
222
223 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(60.0), a, routingStream);
224 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(60.0), b, routingStream);
225 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(60.0), c, routingStream);
226 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(60.0), d, routingStream);
227
228 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(90.0), a, routingStream);
229 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(90.0), b, routingStream);
230 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(90.0), c, routingStream);
231 Ipv4RoutingHelper::PrintRoutingTableAt(Seconds(90.0), d, routingStream);
232 }
233
234 NS_LOG_INFO("Create Applications.");
235 uint32_t packetSize = 1024;
236 Time interPacketInterval = Seconds(1.0);
237 PingHelper ping(Ipv4Address("10.0.6.2"));
238
239 ping.SetAttribute("Interval", TimeValue(interPacketInterval));
240 ping.SetAttribute("Size", UintegerValue(packetSize));
241 if (showPings)
242 {
243 ping.SetAttribute("VerboseMode", EnumValue(Ping::VerboseMode::VERBOSE));
244 }
245 ApplicationContainer apps = ping.Install(src);
246 apps.Start(Seconds(1.0));
247 apps.Stop(Seconds(110.0));
248
249 AsciiTraceHelper ascii;
250 csma.EnableAsciiAll(ascii.CreateFileStream("rip-simple-routing.tr"));
251 csma.EnablePcapAll("rip-simple-routing", true);
252
253 Simulator::Schedule(Seconds(40), &TearDownLink, b, d, 3, 2);
254
255 /* Now, do the actual simulation. */
256 NS_LOG_INFO("Run Simulation.");
257 Simulator::Stop(Seconds(131.0));
258 Simulator::Run();
259 Simulator::Destroy();
260 NS_LOG_INFO("Done.");
261
262 return 0;
263}
holds a vector of ns3::Application pointers.
void Start(Time start)
Start all of the Applications in this container at the start time given as a parameter.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
Manage ASCII trace files for device models.
Definition: trace-helper.h:173
Ptr< OutputStreamWrapper > CreateFileStream(std::string filename, std::ios::openmode filemode=std::ios::out)
Create and initialize an output stream object we'll use to write the traced bits.
Parse command-line arguments.
Definition: command-line.h:232
build a set of CsmaNetDevice objects
Definition: csma-helper.h:48
AttributeValue implementation for DataRate.
Hold variables of type enum.
Definition: enum.h:56
aggregate IP/TCP/UDP functionality to existing Nodes.
void Install(std::string nodeName) const
Aggregate implementations of the ns3::Ipv4, ns3::Ipv6, ns3::Udp, and ns3::Tcp classes onto the provid...
void SetRoutingHelper(const Ipv4RoutingHelper &routing)
void SetIpv6StackInstall(bool enable)
Enable/disable IPv6 stack install.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
void SetBase(Ipv4Address network, Ipv4Mask mask, Ipv4Address base="0.0.0.1")
Set the base network number, network mask and base address.
Ipv4InterfaceContainer Assign(const NetDeviceContainer &c)
Assign IP addresses to the net devices specified in the container based on the current network prefix...
Ipv4 addresses are stored in host order in this class.
Definition: ipv4-address.h:43
Access to the IPv4 forwarding table, interfaces, and configuration.
Definition: ipv4.h:79
virtual Ptr< Ipv4RoutingProtocol > GetRoutingProtocol() const =0
Get the routing protocol to be used by this Ipv4 stack.
holds a vector of std::pair of Ptr<Ipv4> and interface index.
Helper class that adds ns3::Ipv4ListRouting objects.
void Add(const Ipv4RoutingHelper &routing, int16_t priority)
a class to represent an Ipv4 address mask
Definition: ipv4-address.h:258
holds a vector of ns3::NetDevice pointers
keep track of a set of node pointers.
Ptr< T > GetObject() const
Get a pointer to the requested aggregated Object.
Definition: object.h:471
Create a ping application and associate it to a node.
Definition: ping-helper.h:48
Helper class that adds RIP routing to nodes.
Definition: rip-helper.h:41
void ExcludeInterface(Ptr< Node > node, uint32_t interface)
Exclude an interface from RIP protocol.
Definition: rip-helper.cc:161
void SetInterfaceMetric(Ptr< Node > node, uint32_t interface, uint8_t metric)
Set a metric for an interface.
Definition: rip-helper.cc:179
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:105
AttributeValue implementation for Time.
Definition: nstime.h:1423
Hold an unsigned integer type.
Definition: uinteger.h:45
void SetDefault(std::string name, const AttributeValue &value)
Definition: config.cc:891
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:202
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition: log.h:275
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1336
Time MilliSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition: nstime.h:1348
NodeContainer nodes
Every class exported by the ns3 library is enclosed in the ns3 namespace.
void LogComponentEnable(const char *name, LogLevel level)
Enable the logging output associated with that log component.
Definition: log.cc:296
LogLevel
Logging severity classes and levels.
Definition: log.h:94
@ LOG_LEVEL_ALL
Print everything.
Definition: log.h:116
@ LOG_PREFIX_TIME
Prefix all trace prints with simulation time.
Definition: log.h:119
@ LOG_PREFIX_NODE
Prefix all trace prints with simulation node.
Definition: log.h:120
@ LOG_LEVEL_INFO
LOG_INFO and above.
Definition: log.h:107
void LogComponentEnableAll(LogLevel level)
Enable the logging output for all registered log components.
Definition: log.cc:318
csma
Definition: second.py:56
cmd
Definition: second.py:33
bool verbose
void TearDownLink(Ptr< Node > nodeA, Ptr< Node > nodeB, uint32_t interfaceA, uint32_t interfaceB)
static const uint32_t packetSize
Packet size generated at the AP.