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

[Spyridon (Spyros) Mastorakis]

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 <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/ <http://cs.ucla.edu/~mastorakis/>
Internet Research Laboratory
Computer Science Department
UCLA

> 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 <mailto:shijunxiao at email.arizona.edu>> wrote:
>> 
>> On Thu, Aug 3, 2017 at 00:40 Junxiao Shi <shijunxiao at email.arizona.edu <mailto: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 <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 <mailto: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 <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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