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The FIB helper works only with wired (p2p) links if I recall correctly. It will not work with wireless links. I had pushed a patch for that on gerrit probably a couple of years ago, but it got abandoned a few weeks ago.
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<div class="">Thanks,</div>
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<div>Spyridon (Spyros) Mastorakis<br class="">
Assistant Professor<br class="">
Computer Science Department<br class="">
University of Nebraska, Omaha<br class="">
Peter Kiewit Institute Room 175A<br class="">
<a href="https://sites.google.com/site/spyridonmastorakis" class="">https://sites.google.com/site/spyridonmastorakis</a><br class="">
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<div class="">On Jun 25, 2020, at 6:56 PM, Muktadir R Chowdhury (mrchwdhr) <<a href="mailto:mrchwdhr@memphis.edu" class="">mrchwdhr@memphis.edu</a>> wrote:</div>
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I have three nodes: two stations and one access point. Which I created in the following way:</div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>NodeContainer wifiStaNodes;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>wifiStaNodes.Create (2);</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span></span><span style="font-variant-ligatures: no-common-ligatures;" class="">NodeContainer wifiApNode;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>wifiApNode.Create (</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">1</span><span style="font-variant-ligatures: no-common-ligatures;" class="">);</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span style="font-family: monaco; font-size: 9pt; color: rgb(241, 241, 240); background-color: rgba(0, 0, 0, 0);" class=""> </span></span><span style="font-variant-ligatures: no-common-ligatures; font-family: monaco; font-size: 9pt; color: rgb(241, 241, 240); background-color: rgba(0, 0, 0, 0);" class=""></span></p>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();<span class=""> </span></span></div>
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<span style="color: rgb(241, 241, 240); font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>wifiChannel.SetPropagationDelay(</span><span style="font-variant-ligatures: no-common-ligatures;" class="">"ns3::ConstantSpeedPropagationDelayModel"</span><span style="color: rgb(241, 241, 240); font-variant-ligatures: no-common-ligatures;" class="">);</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>wifiChannel.AddPropagationLoss (</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"ns3::RangePropagationLossModel"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">,<span class="Apple-converted-space"> </span></span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"MaxRange"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">,
DoubleValue(</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">50</span><span style="font-variant-ligatures: no-common-ligatures;" class="">));</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();<span class=""> </span></span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>phy.SetChannel (wifiChannel.Create());</span></div>
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<span style="color: rgb(241, 241, 240); font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>WifiHelper wifi; </span></div>
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<span style="color: rgb(241, 241, 240); font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>wifi.SetRemoteStationManager(</span><span style="font-variant-ligatures: no-common-ligatures;" class="">"ns3::ConstantRateWifiManager"</span><span style="color: rgb(241, 241, 240); font-variant-ligatures: no-common-ligatures;" class="">,<span class="Apple-converted-space"> </span></span><span style="font-variant-ligatures: no-common-ligatures;" class="">"DataMode"</span><span style="color: rgb(241, 241, 240); font-variant-ligatures: no-common-ligatures;" class="">,</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>StringValue(</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"OfdmRate24Mbps"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">));</span></div>
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<span style="color: rgb(241, 241, 240); font-variant-ligatures: no-common-ligatures;" class=""> WifiMacHelper mac; </span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>Ssid ssid = Ssid (</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"ns-3-ssid"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">);</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>mac.SetType (</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"ns3::StaWifiMac"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">,<span class="Apple-converted-space"> </span></span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"Ssid"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">,
SsidValue (ssid),<span class="Apple-converted-space"> </span></span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"ActiveProbing"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">, BooleanValue
(</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">false</span><span style="font-variant-ligatures: no-common-ligatures;" class="">));</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""> NetDeviceContainer staDevices = wifi.Install (phy, mac, wifiStaNodes);</span><span style="font-variant-ligatures: no-common-ligatures;" class=""></span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> </span></span></p>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""> mac.SetType (</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"ns3::ApWifiMac"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">,<span class="Apple-converted-space"> </span></span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"Ssid"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">,
SsidValue (ssid));</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>NetDeviceContainer apDevices = wifi.Install (phy, mac, wifiApNode);</span></div>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Node 0 (Consumer) , Node 2 (Access Point), and Node 1 (Producer).</span><br class="">
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All the nodes' strategy is set to best-route for the used prefix. I am manually setting up the routes between stations and ap.</div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>Ptr<Node> conNode = wifiStaNodes.Get(</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">0</span><span style="font-variant-ligatures: no-common-ligatures;" class="">);</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>Ptr<Node> prodNode = wifiStaNodes.Get(</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">1</span><span style="font-variant-ligatures: no-common-ligatures;" class="">);</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>Ptr<Node> apNode = wifiApNode.Get(</span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">0</span><span style="font-variant-ligatures: no-common-ligatures;" class="">);</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>ndn::FibHelper::AddRoute(conNode,<span class="Apple-converted-space"> </span></span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"/test/prefix"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">,
apNode,<span class="Apple-converted-space"> </span></span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">1</span><span style="font-variant-ligatures: no-common-ligatures;" class="">);</span></div>
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<span style="font-variant-ligatures: no-common-ligatures;" class=""><span class=""> <span class="Apple-converted-space"> </span></span>ndn::FibHelper::AddRoute(prodNode,<span class="Apple-converted-space"> </span></span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">"/test/prefix"</span><span style="font-variant-ligatures: no-common-ligatures;" class="">,
apNode,<span class="Apple-converted-space"> </span></span><span style="color: rgb(230, 104, 79); font-variant-ligatures: no-common-ligatures;" class="">1</span><span style="font-variant-ligatures: no-common-ligatures;" class="">);<span class=""> </span></span></div>
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I am getting the following error in the FibHelper::AddRoute():</div>
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<span style="font-variant-ligatures: no-common-ligatures;" class="">msg="Cannot add route: Node# 0 and Node# 2 are not connected", file=../src/ndnSIM/helper/ndn-fib-helper.cpp, line=156</span></div>
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This is because the NetDevice for Node# 0 is not found, which is checked in this line:</div>
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<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_named-2Ddata_ndnSIM_blob_master_helper_ndn-2Dfib-2Dhelper.cpp-23L134&d=DwMFAw&c=Cu5g146wZdoqVuKpTNsYHeFX_rg6kWhlkLF8Eft-wwo&r=eI5Bh74ovG-uIXQ5ksQETSPgRFzmJXjIZXneCqw580E&m=4ek9j7voginvALvFbSSEsRmAeHe0PDY5s1hVmetBOMc&s=5KAEFzGX_Ql4n4dSwaRUeGpRAAeIZmhrxNKbZ7cF1XE&e=" id="LPlnk613248" style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">https://github.com/named-data/ndnSIM/blob/master/helper/ndn-fib-helper.cpp#L134</a><br class="">
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>From the log I can see that NetDeviceTransport is created for all the nodes. Can you any one please tell what I am missing here?</div>
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-Muktadir</div>
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