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traffic-control: Enhance example to show a RedQueueDisc config

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This commit is contained in:
Pasquale Imputato
2016-03-21 22:05:02 -07:00
parent 3550057f1a
commit a876945fcc
1 changed files with 12 additions and 6 deletions
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18
examples/traffic-control/traffic-control.cc
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@@ -77,7 +77,7 @@ main (int argc, char *argv[])
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("10Mbps"));
pointToPoint.SetChannelAttribute ("Delay", StringValue ("2ms"));
pointToPoint.SetQueue ("ns3::DropTailQueue", "Mode", StringValue ("QUEUE_MODE_PACKETS"), "MaxPackets", UintegerValue (1000));
pointToPoint.SetQueue ("ns3::DropTailQueue", "Mode", StringValue ("QUEUE_MODE_PACKETS"), "MaxPackets", UintegerValue (1));
NetDeviceContainer devices;
devices = pointToPoint.Install (nodes);
@@ -86,10 +86,9 @@ main (int argc, char *argv[])
stack.Install (nodes);
TrafficControlHelper tch;
uint16_t handle = tch.SetRootQueueDisc ("ns3::PfifoFastQueueDisc");
// Add three internal queues corresponding to the three bands used by PfifoFast
tch.AddInternalQueues (handle, 3, "ns3::DropTailQueue", "MaxPackets", UintegerValue (1000));
tch.AddPacketFilter (handle, "ns3::PfifoFastIpv4PacketFilter");
uint16_t handle = tch.SetRootQueueDisc ("ns3::RedQueueDisc");
// Add the internal queue used by Red
tch.AddInternalQueues (handle, 1, "ns3::DropTailQueue", "MaxPackets", UintegerValue (10000));
QueueDiscContainer qdiscs = tch.Install (devices);
Ptr<QueueDisc> q = qdiscs.Get (1);
@@ -137,7 +136,14 @@ main (int argc, char *argv[])
double thr = 0;
uint32_t totalPacketsThr = DynamicCast<PacketSink> (sinkApp.Get (0))->GetTotalRx ();
thr = totalPacketsThr * 8 / (simulationTime * 1000000.0); //Mbit/s
std::cout << thr << " Mbit/s" <<std::endl;
std::cout << "Average throughput: " << thr << " Mbit/s" <<std::endl;
std::cout << "*** Source stats ***" << std::endl;
std::cout << "Number of packets dropped by the TC layer: " << q->GetTotalDroppedPackets () << std::endl;
std::cout << "Number of packets dropped by the netdevice: " << queue->GetTotalDroppedPackets () << std::endl;
std::cout << "Number of packets requeued by the TC layer: " << q->GetTotalRequeuedPackets () << std::endl;
std::cout << "Number of actually lost packets: " << q->GetTotalDroppedPackets ()
+ queue->GetTotalDroppedPackets ()
- q->GetTotalRequeuedPackets () << std::endl;
return 0;
}