<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large">Hello, Saurab. Thanks for the quick response.</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"><br>a) After executing "<span style="color:rgb(0,0,0);font-family:Consolas,Courier,monospace;font-size:16px">ps aux | grep nfd</span>":</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">otavio      2711  0.0  0.0  17560   720 pts/0    S+   13:52   0:00 grep --color=auto nfd</blockquote></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large">I'm not sure what it really means but I believe there is no instance of NFD being executed because I also executed <span style="color:rgb(0,0,0);font-family:Consolas,Courier,monospace;font-size:16px">sudo nfd-stop</span>.<br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large">I use <span style="color:rgb(0,0,0);font-family:Consolas,Courier,monospace;font-size:16px">sudo nfd-stop </span>followed by<span style="color:rgb(0,0,0);font-family:Consolas,Courier,monospace;font-size:16px"> </span><span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:16px"><code style="">sudo mn -c</code></span>, but the error persists. I forgot to mention befor, sometimes this error happens to other devices, like device [c].</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"><br></div><div class="gmail_default" style=""><font size="4" style="font-family:tahoma,sans-serif">b) I annex the log files</font><font style="white-space:nowrap;background-color:rgb(241,243,244)" color="#000000" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif" size="3"> </font><span style="font-size:large;font-family:tahoma,sans-serif"> of the device [d]. </span><span style="font-family:tahoma,sans-serif;font-size:large">I believe the error is in the NFD process, so I tried to analyze the <i>nfd.log</i> file. </span><span style="font-size:large;font-family:tahoma,sans-serif">In</span><span style="font-family:tahoma,sans-serif;font-size:large"> line 151 has: </span></div><font face="tahoma, sans-serif" size="4"><br></font><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span style="font-family:tahoma,sans-serif;font-size:large">1683222210.317364  INFO: [nfd.FaceTable] Added face id=260 remote=udp4://<a href="http://10.0.0.9:6363">10.0.0.9:6363</a> local=udp4://<a href="http://10.0.0.10:6363">10.0.0.10:6363</a><span class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"></span></span></blockquote><font face="tahoma, sans-serif" size="4"><span class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"></span><br><span class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"></span><span class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"></span></font><span style="font-family:tahoma,sans-serif;font-size:large">The strange thing is that</span><font face="tahoma, sans-serif" size="4"> the face seems to have been successfully <span class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large">registered</span>.<span class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"> I don't know.</span><span class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"></span><span class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"></span></font><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large">Thanks,</div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large">Otavio </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Em qui., 4 de mai. de 2023 às 11:38, Saurab Dulal (sdulal) <<a href="mailto:sdulal@memphis.edu" target="_blank">sdulal@memphis.edu</a>> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>




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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Hi </span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255);display:inline">Otávio, </span></div>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Can't exactly say what might be an issue just by looking at the error you sent. Can you verify a couple of things?</span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">a) Check if there is any stray NFD instance already running before you start the experiment. You can grep the processes to check
</span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">"ps aux | grep nfd"</span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">. If there is any, you need
 to kill it/them before running the experiment.</span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Also would recommend to run
<b><code>sudo mn -c</code>​ </b>before running the experiments, this will clear any stray processes from the previous run.</span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;font-variant-ligatures:normal;font-variant-caps:normal;color:rgb(0,0,0)">b) Set the NFD and NLSR log level to DEBUG and check the logs (NFD/NLSR) and see if you can find
 a more </span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;font-variant-ligatures:normal;font-variant-caps:normal;color:rgb(0,0,0)">detailed cause of your issue. NFD and NLSR logs are stored in
<b>/tmp/minindn</b> </span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;font-variant-ligatures:normal;font-variant-caps:normal;color:rgb(0,0,0)"><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255);display:inline">by
 default</span></span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;font-variant-ligatures:normal;font-variant-caps:normal;color:rgb(0,0,0)">. </span><br>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;font-variant-ligatures:normal;font-variant-caps:normal;color:rgb(0,0,0)"><span style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px;color:rgb(173,186,199)"><span style="box-sizing:border-box"><br>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Y</span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">ou can set the</span><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
 logs by changing the following lines in the experiment script.</span></p>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;font-variant-ligatures:normal;font-variant-caps:normal;color:rgb(0,0,0)"><span style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px;color:rgb(173,186,199)"><span style="box-sizing:border-box;font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)"><span>      </span>nfds</span></span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline"> </span><span style="box-sizing:border-box;font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">=</span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline"> </span><span style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px"><span style="box-sizing:border-box;font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">AppManager</span></span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline">(</span><span style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px;color:rgb(173,186,199)"><span style="box-sizing:border-box;font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">ndn</span></span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline">,
</span><span style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px;color:rgb(173,186,199)"><span style="box-sizing:border-box;font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">ndn</span></span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline">.</span><span style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px;color:rgb(173,186,199)"><span style="box-sizing:border-box;font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">net</span></span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline">.</span><span style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px;color:rgb(173,186,199)"><span style="box-sizing:border-box;font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">hosts</span></span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline">,
</span><span style="box-sizing:border-box;font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px"><span style="box-sizing:border-box;font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">Nfd,
<b>logLevel='DEBUG'</b></span></span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline">)</span><br>
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<span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;font-variant-ligatures:normal;font-variant-caps:normal;color:rgb(0,0,0)"><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0);background-color:rgba(174,124,20,0.15);display:inline"></span></span></p>
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<span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)"><span>      </span>nlsrs = AppManager(ndn, ndn.net.hosts, Nlsr,
</span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0);background-color:rgb(255,255,255);display:inline"><b>logLevel='DEBUG'</b></span><span style="font-family:Consolas,Courier,monospace;font-size:12pt;color:rgb(0,0,0)">)</span></p>
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Thanks,</div>
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<p style="margin-top:0px;margin-bottom:0px"><span style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Saurab</span><br>
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<div id="m_1105779487583665086m_8940058779963711100divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt;color:rgb(0,0,0)"><b>From:</b> Mini-NDN <<a href="mailto:mini-ndn-bounces@lists.cs.ucla.edu" target="_blank">mini-ndn-bounces@lists.cs.ucla.edu</a>> on behalf of Otávio Augusto via Mini-NDN <<a href="mailto:mini-ndn@lists.cs.ucla.edu" target="_blank">mini-ndn@lists.cs.ucla.edu</a>><br>
<b>Sent:</b> Wednesday, May 3, 2023 8:54 AM<br>
<b>To:</b> <a href="mailto:mini-ndn@lists.cs.ucla.edu" target="_blank">mini-ndn@lists.cs.ucla.edu</a> <<a href="mailto:mini-ndn@lists.cs.ucla.edu" target="_blank">mini-ndn@lists.cs.ucla.edu</a>><br>
<b>Subject:</b> [Mini-NDN] Face register failed</font>
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<td align="center">CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and trust the content is safe.</td>
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Hello everybody. I'm starting to emulate an NDN-based proposal in the mini-NDN. I'm using an ubuntu 20.04 virtual machine and I installed the mini-NDN using the "install.sh" file. However, when trying to run the mnndn.py example I get the following error:<br>
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Using topology file /usr/local/etc/mini-ndn/default-topology.conf<br>
*** Creating network<br>
*** Adding controller<br>
*** Adding hosts:<br>
a b c d<br>
*** Adding switches:</blockquote>
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*** Adding links:<br>
(10ms delay) (10ms delay) (a, b) (10ms delay) (10ms delay) (a, c) (10ms delay) (10ms delay) (b, d)<br>
*** Configuring hosts<br>
a b c d<br>
*** Starting controller<br>
c0<br>
*** Starting 0 switches</blockquote>
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Starting NFD on nodes<br>
Starting NLSR on nodes<br>
[d] Face register failed: face-updated id=260 local=udp4://<a href="http://10.0.0.10:6363/" target="_blank">10.0.0.10:6363</a>
 remote=udp4://<a href="http://10.0.0.9:6363/" target="_blank">10.0.0.9:6363</a>
 persistency=permanent reliability=off congestion-marking=on congestion-marking-interval=100ms default-congestion-threshold=65536B mtu=8800<br>
*** Starting CLI:</blockquote>
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I tested this same process through vagrant and it worked well, however, I would like to start using it through my virtual machine due to the graphical interface.</div>
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Thank you very much in advance.</div>
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<div><font face="tahoma, sans-serif">Otávio da Cruz</font></div>
<font face="tahoma, sans-serif">M.Sc. student</font>
<div><font face="tahoma, sans-serif">Electrical Engineering at the Graduate Program in Electrical Engineering of the Federal University of Rio Grande do Sul (UFRGS)</font><br>
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