[Ndn-interest] [EXT]question on request and response

marwa kareem m.kareem1305 at coeng.uobaghdad.edu.iq
Wed Jan 27 04:18:54 PST 2021

Hi Junxiao
  Yes, as you have NFD running on the end hosts, they have caching.
thanks, now I get it, but is it the same for ndnping, ndnpingserver?
the ping is a test for the reachability so the request should go all the
way to the destination no matter what, is that correct?
the caching is not involved in this? i.e. there is no caching for the data
packet of the ndnping because it should go the whole way to determine the

2- thanks I will do it

On Tue, Jan 26, 2021 at 5:16 PM Junxiao Shi <shijunxiao at email.arizona.edu>

> Hi Marwa
>> 1-
>> Content is now served from cache.
>> is the contents served from the cache even though it is only 2 pcs
>> connected and there are no intermediate nodes between them?
> Yes, as you have NFD running on the end hosts, they have caching.
>> 2-
>>  I've found this code and I hope you can help me out SDCCN, here the
>> researcher use the pof switch, he identify the ccn protocol and add a
>> matching entry to match if the packet is interest packet or data packet
>> in this line
>> https://github.com/sergiocharpineljr/SDCCN-Controller/blob/master/POFController/src/main/java/br/ufes/inf/sergio/POFCCNxListener.java#L161
>> he put the value "01d2" to identify the interest packet and the value
>> "0482" to identify the data packet, I searched a lot to try to figure out
>> what are these values came from but I failed, so is these values related in
>> some way to the ccn/ndn?  He also uses the ccnping to make the requests.
> Please open an issue on the GitHub repository to ask the author.
> Yours, Junxiao
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