[ndnSIM] problem with an underwater node while running, the NDN layer!

Narges Mehran narges.mehran at gmail.com
Sat Sep 9 12:34:43 PDT 2017

Hello team,

Thanks a lot Spyros and Junxiao,

I did what you had recommended; however, the limitation in sending to a
specific node didn't solve the problem either.
Although the producer does receive the Interest, it does not give the
packet to the application layer to start producing the Data!

Any idea how to get closer to the solution?


On Sat, Aug 5, 2017 at 5:15 AM, Spyridon (Spyros) Mastorakis <
mastorakis at cs.ucla.edu> wrote:

> Hi,
> I am not aware of the specifics of the UAN device model, but you could
> take a look here:
> https://github.com/4th-ndn-hackathon/ndnSIM-Mobile-
> Simulation-Package/blob/master/model/ndn-net-device-transport.cpp#L88
> This is a project of the latest NDN hackathon and in this specific piece
> of code we have changed the doSend method of the net device transport to
> support unicast association with a Wifi access point.
> Again, I do not know the specifics of the UAN device model, but the issue
> might be something similar to that.
> Hope that this helps,
> Spyridon (Spyros) Mastorakis
> Personal Website: http://cs.ucla.edu/~mastorakis/
> Internet Research Laboratory
> Computer Science Department
> On Aug 4, 2017, at 2:16 AM, Oleg Surnin <o.surnin at innopolis.ru> wrote:
> Thanks for your replies.
> I added manually faces to the FIB. Packets still not forwarding.
> Also I'm noticed that p2p network devices have a MAC address in FIB(
> netdev://[00:00:...:0d]258), but UAN devices that I added don't have them
> (netdev://256). Maybe this is a problem?
> On 08/03/2017 10:38 PM, Narges Mehran wrote:
> Hello Junxiao,
> Thanks a million for your responses.
> Oleg is right. Actually, I have checked it with other versions. Also, in a
> paper named: "A Named-Data Networking Approach to Underwater Monitoring
> Systems", the application of NDN layer has been exploited with the newer
> version of ndnSIM; however, it seems that the authors of this paper are so
> busy to guide us.
> Anyway, ndnSIM is OK with the WiFi protocols and I have tested it myself.
> But with the underwater acoustic protocols, it seems that the structures do
> not agree with each other properly. U R right. I should go through the
> routing to see if it is working truly.
> Regards,
> Narges
> On Thu, Aug 3, 2017 at 5:38 PM, Junxiao Shi <shijunxiao at email.arizona.edu>
> wrote:
>> On Thu, Aug 3, 2017 at 00:40 Junxiao Shi <shijunxiao at email.arizona.edu>
>> wrote:
>>> Hi Oleg
>>> FibHelper::AddRoute in ndnSIM 2.3 only recognizes PointToPointNetDevice,
>>> and does not support UAN. https://github.com/named-data-
>>> ndnSIM/ndnSIM/blob/ndnSIM-2.3/helper/ndn-fib-helper.cpp#L137
>>> You may manipulate the FIB directly. Look at FibHelper code to get an
>>> idea about how to do that.
>>> I guess the reason FibHelper::AddRoute(node, prefix, nexthopNode,
>>> metric) being limited to PointToPointNetDevice is that, ndnSIM is incapable
>>> of unicasting over a broadcast or ad hoc wireless face. It would be
>>> semantically incorrect if this FibHelper::AddRoute overload causes a node
>>> to broadcast Interests onto a channel where nexthopNode and potentislly
>>> other nodes are present.
>>> However, it would be nice for this overload to install a route to the
>>> broadcast face if the underlying channel only contains {node, nexthopNode},
>>> which exactly fulfills your use case. I suggest reporting an issue with
>>> Tracker=Feature on ndnSIM Redmine site.
>>> Yours, Junxiao
>>> On Wed, Aug 2, 2017 at 22:49 Oleg Surnin <o.surnin at innopolis.ru> wrote:
>>>> I have the same problem as a Narges. The first part of the code looks
>>>> very similar. But I'm using the ndnSIM 2.3. In my case the packets
>>>> didn't transfered between nodes.
>>>> The code is here: https://pastebin.com/iVNz5cnX
>>>> I'm tried to setup FIB manually by
>>>> ndn::FibHelper::AddRoute(nc.Get(1), "/prefix", nc.Get(0), 1);
>>>> but have an error:  "Cannot add route: Node# 1 and Node# 0 are not
>>>> connected"
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