[Ndn-interest] [EXT] question on request and response
shijunxiao at email.arizona.edu
Mon Jan 25 16:07:29 PST 2021
I connect two virtual machines in virtualbox and configure the NFD same
> what it written here <https://named-data.net/doc/NFD/current/INSTALL.html>
> and run ndnping and ndnpingserver and the results are in the attachments
> (picture 1,2)
> 1- in pic. 1 the rtt starts to be high 13.8 and then decreases to 1.8
> then it increases to 2.3 then decreases again to 1.8 why is that?
The first Interest has additional delay because the client needs to
establish a connection to the forwarder.
1.8 vs 2.3 is normal.
> 2- then I used ccnputchunks and ccncatchunks instead of ndnping and
> ndnpingserver (picture 3,4),
> I transfer a picture with 11KB , so during the transfer it was cut into 3
> chunks, why? is there a specific size for the transfer?
Each chunk is 4400-octet payload.
> 3- in pic. 3 there is a lot of information regarding the transfer such as
> RTO, alpha, beta, k, where i can find a description about these parameters?
These are details of CUBIC congestion control algorithm.
4- in pic. 5 the RTT has decreased very much after I run the ccncatchunks
> for many times, why?
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