<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Feb 23, 2016, at 4:02 PM, Burke, Jeff <<a href="mailto:jburke@remap.ucla.edu" class="">jburke@remap.ucla.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="">Thanks... It would be great to better understand the nature of the misconception, and what a "region" is – I can't find a definition anywhere.</div>
<div class="">Jeff</div></div></div></div></blockquote><div><br class=""></div>Let me try a simple explanation: </div><div>1/ a LINK is to get an interest to the place where the name in the interest can be used directly for lookup</div><div>2/ routers do FIB lookup using LINK first (if interest carries one), until the interest reaches the place (so called "region") where its name is in the FIB, then the router will do look up using the interest name</div><div>3/ a router decides whether the LINK has finished its job by comparing LINK with its own name: if the LINK is either its prefix or an exact match to the name, then the LINK is no longer needed.</div><div><br class=""></div><div>Every entity in an NDN network should know its own name (how it learns the name is design/implementation question).</div><div><br class=""></div><div><blockquote type="cite" class=""><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">
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<span style="font-weight:bold" class="">From: </span>Lixia Zhang <<a href="mailto:lixia@cs.ucla.edu" class="">lixia@cs.ucla.edu</a>><br class="">
<span style="font-weight:bold" class="">Date: </span>Tuesday, February 23, 2016 at 3:46 PM<br class="">
<span style="font-weight:bold" class="">To: </span>Jeff Burke <<a href="mailto:jburke@remap.ucla.edu" class="">jburke@remap.ucla.edu</a>><br class="">
<span style="font-weight:bold" class="">Cc: </span>"<a href="mailto:nfd-dev@lists.cs.ucla.edu" class="">nfd-dev@lists.cs.ucla.edu</a>" <<a href="mailto:nfd-dev@lists.cs.ucla.edu" class="">nfd-dev@lists.cs.ucla.edu</a>><br class="">
<span style="font-weight:bold" class="">Subject: </span>Re: [Nfd-dev] What is a "region" ?<br class="">
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we are in group meeting now and explained how LINK (= forwarding hint) works to Zhehao and Haitao. We also trying to figure out a solution to the function you wanted (NDNfit's original design was based on a misconception of LINK).
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<div class="">LINK is a forwarding hint, it just carries an interest to the place where the name in the interest can be used directly for lookup.</div>
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<div class="">Lixia</div>
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<div class="">On Feb 23, 2016, at 1:24 PM, Burke, Jeff <<a href="mailto:jburke@remap.ucla.edu" class="">jburke@remap.ucla.edu</a>> wrote:</div>
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<div class="">Hi,</div>
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<div class="">Even after looking at relevant sections in the NFD developer's guide, we are blocked on finishing the NDNFit forwarding hint design by not understanding the specific definition of what a "region" is, and how they should be confirmed in practice... </div>
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<div class="">For example, see section 4.2 of the NFD developer's guide.</div>
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<div class=""><span id="cid:597A9946-58BB-4C0C-A3FA-3825AEE7390A" class=""><Screenshot 2016-02-23 13.18.21.png></span></div>
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<div class="">1) What is a region? </div>
<div class="">2) How should they be configured at each NFD? </div>
<div class="">3) [And, who is expected to configure them, and when?] </div>
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<div class="">Thanks,</div>
<div class="">Jeff</div>
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