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<p>Hi <span style="color: rgb(33, 33, 33); font-size: 15px;">Junxiao,</span></p>
<p><font color="#212121"><span style="font-size: 15px;"><br>
</span></font></p>
<p><font color="#212121"><span style="font-size: 15px;">Thanks for clarifying that I should use the broadcast-channel for the MAC layer to broadcast a message and for informing me to consider the frame size when I send the interest. Yet, </span><span style="font-size: 15px;">I
still need to know how to advertise a service or send a command to all neighbor nodes. An example of CCNx's Service Naming Conventions is "</span></font><font color="#212121" style="font-size: 12pt;"><span style="font-size: 15px;">%C1.serv/", which should
be received by all neighbor nodes, </span></font><font color="#212121"><span style="font-size: 15px;">where "C1" is the special name component
</span></font><span style="font-size: 15px; color: rgb(33, 33, 33);">and "serv" is the advertised </span><span style="font-size: 15px; color: rgb(33, 33, 33);">service.</span></p>
<p><font color="#212121"><span style="font-size: 15px;"><br>
</span></font></p>
<p><font color="#212121"><span style="font-size: 15px;">From your answer, I understand that NDN has no service naming conventions" yet like CCNx, any advice, guide or suggestion that might help me do something similar to service naming convention of CCNx or
do advertise a service</span><span style="font-size: 15px;">?</span></font></p>
<p><font color="#212121"><span style="font-size: 15px;"><br>
</span></font></p>
<p><font color="#212121"><span style="font-size: 15px;">I appreciate your help, t</span></font><span style="font-size: 15px; color: rgb(33, 33, 33);">hanks again,</span></p>
<p><font color="#212121"><span style="font-size: 15px;">Ahed</span></font></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Junxiao Shi <shijunxiao@email.arizona.edu><br>
<b>Sent:</b> Saturday, April 8, 2017 6:33:01 AM<br>
<b>To:</b> Aboodi Ahed Hussein Ali<br>
<b>Cc:</b> ndn-interest@lists.cs.ucla.edu<br>
<b>Subject:</b> Re: [Ndn-interest] Broadcast message</font>
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<div>Hi Ahed
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<blockquote type="cite" class="">
<div class=""><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">In a network scenario where every node is equipped with IEEE 802.15.4-based NDN:</span></div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">1 - Is it possible to send a broadcast message (to send command or to advertise a service) to all the neighbor nodes.</div>
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</blockquote>
<div>Yes, 802.15.4 MAC supports broadcast addressing. NDN packets can be transmitted over broadcast channel.</div>
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<blockquote type="cite" class="">
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">2- H<span style="font-size: 12pt;" class="">ow can I get information on how to structure a broadcast message.</span></div>
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<div>The main concern is that 802.15.4’s MTU is 127 octets. You may send regular Interests with NDNLPv2 fragmentation and reassembly, but each Interest would use many lower layer frames.</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">3- I have also read about "<span class="">extensible command markers" of CCNx which might use "<span class="">%C1.M.S.neighborhood" to broadcast a message/invoke services (correct me if I am wrong),
does NDN has similar extension, and how to do it (a reference or example should help).</span></span></div>
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</blockquote>
<div>The NDN equivalent of “extensible command markers” is <a href="https://redmine.named-data.net/issues/2012" class="">MarkedComponent</a>. It’s not yet approved and not implemented.</div>
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<div class="">Yours, Junxiao</div>
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