<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Sep 28, 2018, at 9:22 PM, Shanshan <<a href="mailto:shishanshan@cstnet.cn" class="">shishanshan@cstnet.cn</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><p class="MsoNormal"><span lang="EN-US" style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;" class="">Hi Teng,</span></p><p class="MsoNormal"><span lang="EN-US" style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;" class="">1)Why resend an Interest to the same outgoing
face:<o:p class=""></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;" class="">When a producer (single-homed) connects to (via one
hop) an over a wireless channel, packets (Interest, Data, Nack) may get lost due
to poor wireless link. I want to design a new forwarding strategy for the edge
router/BS/AP for reliable communication at NDN fw layer rather than at link layer.</span></p></div></div></blockquote><div>given we are doing research here: could you elaborate the advantages from your planned approach over the current link layer reliability enhancement?</div><div><br class=""></div><div>for point-point channels, the NDN-LP based solution seems working well, although this solution (so far) does not apply to multi-access channels. </div><blockquote type="cite" class=""><div class=""><div class=""><p class="MsoNormal"><span lang="EN-US" style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;" class="">
In such case, the FIB entry only has one outgoing face.</span></p></div></div></blockquote><div class=""><div class=""><div class="">it is unclear to me why the FIB entry can only has one outgoing face (or this is just your assumption)</div></div></div><blockquote type="cite" class=""><div class=""><div class=""><p class="MsoNormal"><span lang="EN-US" style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;" class="">2)and when:<o:p class=""></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;" class="">In the above scenario, I want to design a new forwarding
strategy for the edge router/BS/AP by setting a new timer (retransmission timer)
for each PIT entry, and the retransmission timer is estimated by the RTT
between each Interest and the corresponding Data belonging to the same flow. When
the timer expires, the forwarding strategy retries this Interest to the same outgoing
face.</span> </p><p class="MsoNormal"><span lang="EN-US" style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;" class="">I also configure the Access Router Strategy and the
ASF Strategy for the edge router/BS/AP in ndnSIM2.6, but neither implements Interest
retransmission generated by the local node.</span></p></div></div></blockquote>it does not seem hard to add such code into ndnSIM to try it out<br class=""><blockquote type="cite" class=""><div class=""><div class=""><blockquote name="replyContent" class="ReferenceQuote" style="padding-left:5px;margin-left:5px;border-left:#b6b6b6 2px solid;margin-right:0">-----Original Messages-----<br class="">
<b class="">From:</b><span id="rc_from" class="">"Teng Liang" <<a href="mailto:philoliang@email.arizona.edu" class="">philoliang@email.arizona.edu</a>></span><br class="">
<b class="">Sent Time:</b><span id="rc_senttime" class="">2018-09-29 02:57:53 (Saturday)</span><br class="">
<b class="">To:</b> Shanshan <<a href="mailto:shishanshan@cstnet.cn" class="">shishanshan@cstnet.cn</a>>, <a href="mailto:ndn-interest@lists.cs.ucla.edu" class="">ndn-interest@lists.cs.ucla.edu</a><br class="">
<b class="">Cc:</b> <br class="">
<b class="">Subject:</b> Re: [Ndn-interest] NFD-forwarding strategy retry<br class=""><br class=""><p class="">Hi Shanshan,</p>
Can you be more specific on the why and when you want to resend an
Interest to the same outgoing face?<br class="">
<br class="">
Teng<br class="">
<br class="">
<div class="moz-cite-prefix">On 9/26/18 12:05 AM, Shanshan wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:3c27ae28.17f58.16614b2dc0d.Coremail.shishanshan@cstnet.cn" class="">
hi,community
<div class=""><br class="">
</div>
<div class="">I read the latest version of the nfd-developer-guide and I am
not sure if it is allowed to retry the same Interest (generated
by the local node rather than the consumer) via the same
outgoing face. </div>
<div class=""><br class="">
</div>
<div class="">Thank you!</div>
<div class=""><br class="">
</div>
<div class="">Best,</div>
<div class="">Shanshan.</div>
<div class=""><br class="">
<span class=""><br class="">
</span></div>
<br class="">
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