A Discrete-Event Network Simulator
API
ripng-simple-network.cc
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1/*
2 * Copyright (c) 2014 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/ipv6-routing-table-entry.h"
57#include "ns3/ipv6-static-routing-helper.h"
58
59#include <fstream>
60
61using namespace ns3;
62
63NS_LOG_COMPONENT_DEFINE("RipNgSimpleRouting");
64
65void
66TearDownLink(Ptr<Node> nodeA, Ptr<Node> nodeB, uint32_t interfaceA, uint32_t interfaceB)
67{
68 nodeA->GetObject<Ipv6>()->SetDown(interfaceA);
69 nodeB->GetObject<Ipv6>()->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 {
93 LogComponentEnable("RipNgSimpleRouting", LOG_LEVEL_INFO);
95 LogComponentEnable("Icmpv6L4Protocol", LOG_LEVEL_INFO);
96 LogComponentEnable("Ipv6Interface", LOG_LEVEL_ALL);
97 LogComponentEnable("Icmpv6L4Protocol", LOG_LEVEL_ALL);
98 LogComponentEnable("NdiscCache", LOG_LEVEL_ALL);
100 }
101
102 if (SplitHorizon == "NoSplitHorizon")
103 {
104 Config::SetDefault("ns3::RipNg::SplitHorizon", EnumValue(RipNg::NO_SPLIT_HORIZON));
105 }
106 else if (SplitHorizon == "SplitHorizon")
107 {
108 Config::SetDefault("ns3::RipNg::SplitHorizon", EnumValue(RipNg::SPLIT_HORIZON));
109 }
110 else
111 {
112 Config::SetDefault("ns3::RipNg::SplitHorizon", EnumValue(RipNg::POISON_REVERSE));
113 }
114
115 NS_LOG_INFO("Create nodes.");
116 Ptr<Node> src = CreateObject<Node>();
117 Names::Add("SrcNode", src);
118 Ptr<Node> dst = CreateObject<Node>();
119 Names::Add("DstNode", dst);
120 Ptr<Node> a = CreateObject<Node>();
121 Names::Add("RouterA", a);
122 Ptr<Node> b = CreateObject<Node>();
123 Names::Add("RouterB", b);
124 Ptr<Node> c = CreateObject<Node>();
125 Names::Add("RouterC", c);
126 Ptr<Node> d = CreateObject<Node>();
127 Names::Add("RouterD", d);
128 NodeContainer net1(src, a);
129 NodeContainer net2(a, b);
130 NodeContainer net3(a, c);
131 NodeContainer net4(b, c);
132 NodeContainer net5(c, d);
133 NodeContainer net6(b, d);
134 NodeContainer net7(d, dst);
135 NodeContainer routers(a, b, c, d);
136 NodeContainer nodes(src, dst);
137
138 NS_LOG_INFO("Create channels.");
140 csma.SetChannelAttribute("DataRate", DataRateValue(5000000));
141 csma.SetChannelAttribute("Delay", TimeValue(MilliSeconds(2)));
142 NetDeviceContainer ndc1 = csma.Install(net1);
143 NetDeviceContainer ndc2 = csma.Install(net2);
144 NetDeviceContainer ndc3 = csma.Install(net3);
145 NetDeviceContainer ndc4 = csma.Install(net4);
146 NetDeviceContainer ndc5 = csma.Install(net5);
147 NetDeviceContainer ndc6 = csma.Install(net6);
148 NetDeviceContainer ndc7 = csma.Install(net7);
149
150 NS_LOG_INFO("Create IPv6 and routing");
151 RipNgHelper ripNgRouting;
152
153 // Rule of thumb:
154 // Interfaces are added sequentially, starting from 0
155 // However, interface 0 is always the loopback...
156 ripNgRouting.ExcludeInterface(a, 1);
157 ripNgRouting.ExcludeInterface(d, 3);
158
159 ripNgRouting.SetInterfaceMetric(c, 3, 10);
160 ripNgRouting.SetInterfaceMetric(d, 1, 10);
161
163 listRH.Add(ripNgRouting, 0);
165 listRH.Add(staticRh, 5);
166
167 InternetStackHelper internetv6;
168 internetv6.SetIpv4StackInstall(false);
169 internetv6.SetRoutingHelper(listRH);
170 internetv6.Install(routers);
171
172 InternetStackHelper internetv6Nodes;
173 internetv6Nodes.SetIpv4StackInstall(false);
174 internetv6Nodes.Install(nodes);
175
176 // Assign addresses.
177 // The source and destination networks have global addresses
178 // The "core" network just needs link-local addresses for routing.
179 // We assign global addresses to the routers as well to receive
180 // ICMPv6 errors.
181 NS_LOG_INFO("Assign IPv6 Addresses.");
183
184 ipv6.SetBase(Ipv6Address("2001:1::"), Ipv6Prefix(64));
185 Ipv6InterfaceContainer iic1 = ipv6.Assign(ndc1);
186 iic1.SetForwarding(1, true);
188
189 ipv6.SetBase(Ipv6Address("2001:0:1::"), Ipv6Prefix(64));
190 Ipv6InterfaceContainer iic2 = ipv6.Assign(ndc2);
191 iic2.SetForwarding(0, true);
192 iic2.SetForwarding(1, true);
193
194 ipv6.SetBase(Ipv6Address("2001:0:2::"), Ipv6Prefix(64));
195 Ipv6InterfaceContainer iic3 = ipv6.Assign(ndc3);
196 iic3.SetForwarding(0, true);
197 iic3.SetForwarding(1, true);
198
199 ipv6.SetBase(Ipv6Address("2001:0:3::"), Ipv6Prefix(64));
200 Ipv6InterfaceContainer iic4 = ipv6.Assign(ndc4);
201 iic4.SetForwarding(0, true);
202 iic4.SetForwarding(1, true);
203
204 ipv6.SetBase(Ipv6Address("2001:0:4::"), Ipv6Prefix(64));
205 Ipv6InterfaceContainer iic5 = ipv6.Assign(ndc5);
206 iic5.SetForwarding(0, true);
207 iic5.SetForwarding(1, true);
208
209 ipv6.SetBase(Ipv6Address("2001:0:5::"), Ipv6Prefix(64));
210 Ipv6InterfaceContainer iic6 = ipv6.Assign(ndc6);
211 iic6.SetForwarding(0, true);
212 iic6.SetForwarding(1, true);
213
214 ipv6.SetBase(Ipv6Address("2001:2::"), Ipv6Prefix(64));
215 Ipv6InterfaceContainer iic7 = ipv6.Assign(ndc7);
216 iic7.SetForwarding(0, true);
218
219 if (printRoutingTables)
220 {
221 Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper>(&std::cout);
222
223 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(30.0), a, routingStream);
224 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(30.0), b, routingStream);
225 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(30.0), c, routingStream);
226 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(30.0), d, routingStream);
227
228 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(60.0), a, routingStream);
229 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(60.0), b, routingStream);
230 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(60.0), c, routingStream);
231 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(60.0), d, routingStream);
232
233 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(90.0), a, routingStream);
234 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(90.0), b, routingStream);
235 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(90.0), c, routingStream);
236 Ipv6RoutingHelper::PrintRoutingTableAt(Seconds(90.0), d, routingStream);
237 }
238
239 NS_LOG_INFO("Create Applications.");
240 uint32_t packetSize = 1024;
241 Time interPacketInterval = Seconds(1.0);
242 PingHelper ping(iic7.GetAddress(1, 1));
243
244 ping.SetAttribute("Interval", TimeValue(interPacketInterval));
245 ping.SetAttribute("Size", UintegerValue(packetSize));
246 if (showPings)
247 {
248 ping.SetAttribute("VerboseMode", EnumValue(Ping::VerboseMode::VERBOSE));
249 }
250 ApplicationContainer apps = ping.Install(src);
251 apps.Start(Seconds(1.0));
252 apps.Stop(Seconds(110.0));
253
254 AsciiTraceHelper ascii;
255 csma.EnableAsciiAll(ascii.CreateFileStream("ripng-simple-routing.tr"));
256 csma.EnablePcapAll("ripng-simple-routing", true);
257
258 Simulator::Schedule(Seconds(40), &TearDownLink, b, d, 3, 2);
259
260 /* Now, do the actual simulation. */
261 NS_LOG_INFO("Run Simulation.");
262 Simulator::Stop(Seconds(120));
263 Simulator::Run();
264 Simulator::Destroy();
265 NS_LOG_INFO("Done.");
266
267 return 0;
268}
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 SetIpv4StackInstall(bool enable)
Enable/disable IPv4 stack install.
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)
Helper class to auto-assign global IPv6 unicast addresses.
void SetBase(Ipv6Address network, Ipv6Prefix prefix, Ipv6Address base=Ipv6Address("::1"))
Set the base network number, network prefix, and base interface ID.
Ipv6InterfaceContainer Assign(const NetDeviceContainer &c)
Allocate an Ipv6InterfaceContainer with auto-assigned addresses.
Describes an IPv6 address.
Definition: ipv6-address.h:50
Access to the IPv6 forwarding table, interfaces, and configuration.
Definition: ipv6.h:82
Keep track of a set of IPv6 interfaces.
void SetForwarding(uint32_t i, bool state)
Set the state of the stack (act as a router or as an host) for the specified index.
void SetDefaultRouteInAllNodes(uint32_t router)
Set the default route for all the devices (except the router itself).
Ipv6Address GetAddress(uint32_t i, uint32_t j) const
Get the address for the specified index.
Helper class that adds ns3::Ipv6ListRouting objects.
void Add(const Ipv6RoutingHelper &routing, int16_t priority)
Describes an IPv6 prefix.
Definition: ipv6-address.h:456
Helper class that adds ns3::Ipv6StaticRouting objects.
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 RIPng routing to nodes.
Definition: ripng-helper.h:41
void ExcludeInterface(Ptr< Node > node, uint32_t interface)
Exclude an interface from RIPng protocol.
void SetInterfaceMetric(Ptr< Node > node, uint32_t interface, uint8_t metric)
Set a metric for an interface.
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
@ LOG_LEVEL_ALL
Print everything.
Definition: log.h:116
@ LOG_LEVEL_INFO
LOG_INFO and above.
Definition: log.h:107
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.