<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Ahmed<div class=""><br class=""></div><div class="">What routing metrics to use is an <a href="http://redmine.named-data.net/issues/2010" class="">unsolved problem</a>.</div><div class="">NDN testbed is using round-trip time (in milliseconds) measured by IP ping as its routing metrics.</div><div class=""><br class=""></div><div class="">See <a href="http://redmine.named-data.net/projects/nfd/wiki/CcndStrategy" class="">CcndStrategy</a> for information on NCC strategy.</div><div class=""><br class=""></div><div class="">Yours, Junxiao</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jan 28, 2016, at 9:00 AM, Ahmed Sadek <<a href="mailto:don1559@gmail.com" class="">don1559@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Dear All,<div class=""><br class=""></div><div class="">I am trying to understand better the two strategies of best route and NCC. My understanding is:</div><div class=""><br class=""></div><div class="">BestRoute: This strategy relies on routing information and
forwards Interests on the path with the lowest costs considering
a specific metric. <br class=""></div><div class=""><font color="#ff0000" class="">So I was wondering what routing metrics options we can consider for this strategy ? </font></div><div class=""><br class=""></div><div class="">NCC: Interests
are forwarded to the interface, that provides content with
the lowest delay.</div><div class=""><font color="#ff0000" class="">So how is the delay is measured here on a low level for each interface? and is it measured for each prefix for each interface or only for each interface ?</font></div><div class=""><br class=""></div><div class="">I really appreciate any explanation or if you point me to a link explaining it.</div><div class=""><br class=""></div><div class="">Thanks !</div><div class=""><br class=""></div><div class="">Ahmed Sadek</div></div>
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