HWMP

[Nikitin Alexey]

Hello NS3 community! I'm new to this community, there is a lot of information here to understand everything at once. I have been interested in the question of how to install HWMP protocol  in mesh.cc ? 

I will be very grateful for your help!

Regards, Alex.

NS3 Version  3.27

[Tom Henderson]

Hi Alex,

This code in mesh.cc installs HWMP.

/*
* Create mesh helper and set stack installer to it
* Stack installer creates all needed protocols and install them to
* mesh point device
*/
mesh = MeshHelper::Default ();
if (!Mac48Address (m_root.c_str ()).IsBroadcast ())
{
mesh.SetStackInstaller (m_stack, "Root", Mac48AddressValue
(Mac48Address (m_root.c_str ())));
}
else
{
//If root is not set, we do not use "Root" attribute, because it
//is specified only for 11s
mesh.SetStackInstaller (m_stack);
}


To learn more about how these helpers configure HWMP, you should review
the code in src/mesh/helper.

- Tom

[Alex]

Thx for your answer!

How can i check that HWMP protocol is work?

In my .PCAP files i dont see any HWMP or UDP frames.

i use UdpApplication:

void

MeshTest::InstallApplication ()

{

  UdpEchoServerHelper echoServer (9); 

  ApplicationContainer serverApps = echoServer.Install (nodes.Get (1)); 

  serverApps.Start (Seconds (0.0));

  serverApps.Stop (Seconds (m_totalTime));

  UdpEchoClientHelper echoClient (interfaces.GetAddress (1), 9); 

  echoClient.SetAttribute ("MaxPackets", UintegerValue ((uint32_t)(m_totalTime*(1/m_packetInterval))));

  echoClient.SetAttribute ("Interval", TimeValue (Seconds (m_packetInterval)));

  echoClient.SetAttribute ("PacketSize", UintegerValue (m_packetSize));

  ApplicationContainer clientApps = echoClient.Install (nodes.Get (8));

  clientApps.Stop (Seconds (m_totalTime));

}

[Nataraju A B (Gmail)]

MeshTest::MeshTest () :
m_xSize (5),
m_ySize (5),
m_step (170),
m_randomStart (0.1),
m_totalTime (175),
m_packetSize (1500),
m_nIfaces (3),
m_chan (true),
m_pcap (true),
m_stack ("ns3::Dot11sStack"),
m_txrate ("150kbps")
{

}

You may have to configure HWMP and PMP protocols

// Configure the parameters of the Peer Management Protocol
Config::SetDefault ("ns3::dot11s::PeerManagementProtocol::EnableBeaconCollisionAvoidance", BooleanValue (false));

// Configure the parameters of the HWMP
Config::SetDefault ("ns3::dot11s::HwmpProtocol::Dot11MeshHWMPactivePathTimeout", TimeValue (Seconds (100)));
Config::SetDefault ("ns3::dot11s::HwmpProtocol::Dot11MeshHWMPactiveRootTimeout", TimeValue (Seconds (100)));
Config::SetDefault ("ns3::dot11s::HwmpProtocol::Dot11MeshHWMPmaxPREQretries", UintegerValue (5));
Config::SetDefault ("ns3::dot11s::HwmpProtocol::UnicastPreqThreshold", UintegerValue (10));
Config::SetDefault ("ns3::dot11s::HwmpProtocol::UnicastDataThreshold", UintegerValue (5));
Config::SetDefault ("ns3::dot11s::HwmpProtocol::DoFlag", BooleanValue (true));
Config::SetDefault ("ns3::dot11s::HwmpProtocol::RfFlag", BooleanValue (false));

HTH...

Thanks,

Nataraju A.B.

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[Tom Henderson]

On 12/5/19 9:31 AM, Alex wrote:
>
> Thx for your answer!
> How can i check that HWMP protocol is work?
> In my .PCAP files i dont see any HWMP or UDP frames.

ns-3 logging is a good way to try to initially diagnose what is
happening.  There are three log components defined for HWMP, and they
can be enabled like this (if you have build ns-3 in debug mode, which is
the default):

NS_LOG="HwmpProtocol:HwmpProtocolMac:HwmpRtable" ./waf --run mesh

- Tom

[Alex]

Thanks for your answers, I really appreciate it!