[ndnSIM] Mobility Model and Trace File

Ygor Amaral ygor.amaral at gmail.com
Thu Apr 29 06:36:22 PDT 2021


Detail more about what you do not understand about the trace files. For me,
the documentation is very detailed in this regard.

Have you read this document? Url: https://ndnsim.net/current/metric.html

L2Tracer does not track what you want. How the documentation
explains, L2Tracer currently traces only packet drop on layer 2.

ndn::L3RateTracer and ndn::AppDelayTracer track what you want to get.

Ygor Amaral

On Thu, Apr 29, 2021 at 2:32 AM IHK Niad <kilakila333 at gmail.com> wrote:

> Dear Ygor,
> Thank you for the response.
> I will be downloading SUMO tool and start experimenting with.
> Am still not clear about the procedure for extracting few metrics like
> Interest Satisfied, Interest Delay, Copies of Data Packet processed....
> I run a few example codes like app-delay tracer, L2ratetracer.
> However, i was not able to make sense of the trace file generated.
> Any suggestions on how to extract Interest satisfied and Interest Delay
> values for a particular simulation?
> Thank You,
> On Wed, Apr 28, 2021 at 10:28 PM Ygor Amaral <ygor.amaral at gmail.com>
> wrote:
>> Hi IHK,
>> You need to read this document. Url:
>> https://www.nsnam.org/docs/release/3.33/models/html/mobility.html
>> Mobility models basically manage x, y, z cartesian points of each node.
>> When we want to work with vehicular nodes it is very common to use the
>> SUMO simulator (it is not the only tool, but the most common...) to
>> generate the tracking files for the ns-3. Url:
>> https://www.eclipse.org/sumo/
>> The SUMO simulator has comprehensive documentation. My tip is not to use
>> the wizard tool (OSM Web Wizard). Make your vehicular traffic by defining
>> the variables manually, it becomes more realistic. Maybe use the wizard
>> only as a first step, then improve the modeling manually.
>> SUMO will export the variations of the x, y, z positions every second for
>> each vehicle (node). In SUMO you will find a tool to export to ns-2.
>> In ndnSIM/ns-3 there is another tool for you to import this trace from
>> ns-2.
>> If you are going to do several simulations, don't forget to change the
>> seed of the random numbers (it applies to both SUMO and ndnSIM/ns-3 too).
>> Regards,
>> Ygor AMaral
>> On Wed, Apr 28, 2021 at 12:23 PM IHK Niad via ndnSIM <
>> ndnsim at lists.cs.ucla.edu> wrote:
>>> Dear all,
>>> I have installed ndnSIM, run a few example scenarios and getting used to
>>> the tool.
>>> I want to implement a highway scenario of four lanes with mobile nodes.
>>> 1) Which mobility model would suit this scenario?
>>> 2) How to generate trace files for analysing Interest satisfied?
>>> Any help would be highly appreciated.
>>> Regards,
>>> IHK
>>> _______________________________________________
>>> ndnSIM mailing list
>>> ndnSIM at lists.cs.ucla.edu
>>> http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
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