[ndnSIM] interface management

Alex Afanasyev aa at CS.UCLA.EDU
Thu Dec 3 12:44:10 PST 2015

Hi Natalya,

NS-3, as I remember, doesn't provide a mechanism to remove channel/netdevice. As such, there is no corresponding part in ndnSIM.

At the same time, the FaceTable code you found is to support tcp/udp faces of NFD, which can go up and down any time.  Unfortunately, due to lack of manpower, we are still lagging behind implementation of IP-overlay faces in ndnSIM that would have functionality you need.  It would be terrific if you or somebody else on the list helped with this implementation.


> On Dec 3, 2015, at 9:35 AM, Natalya Rozhnova <rozhnova.natalya at gmail.com> wrote:
> Hi all,
> I would ask a question about the interface state management.
> Is there in ndnSIM 2.1 something that do the following:
> when interface goes physically down (say nomore channel or link or something else on physical layer) -> remove the corresponding face from FIB?
> How (and where) could I check it ? I would need this information in NFD forwarder.
> BTW I found the similar functionnality in FaceTable but didn't really get how the information about the interface is checked... Could anybody please explain it to me in more details?
> I also found the function to check whether a face isUp() but it always returns true...
> thanks in advance,
> Natalya
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