[ndnSIM] Some queries regarding network queue

[Junxiao Shi]

Hi Madhurima

In ndnSIM 2.5, this modification will result in Interest dropped without
any records.
Such "tail drop" may or may not be a good idea.
An alternative is inserting congestion marks in reply Data when PIT starts
to fill up, to ask downstream node to slow down. After all, PIT filling up
is a congestion control problem.

Yours, Junxiao

On Tue, Jul 3, 2018 at 6:00 AM, madhurima buragohain <madhurimajya at gmail.com
> wrote:

> Dear All,
>
> I have a simple question.
>
> Interest packet will arrive to PIT after waiting in a network queue right?
> So when PIT will have no free space, the interest should be in the queue.
>
> Am i correct??
>
> In the forwarder.cpp file, it write
>
> void
> Forwarder::onIncomingInterest(Face& inFace, const Interest& interest)
> {
>
> if(m_pit.size()>=200) //suppose PIT size is 200
>
>         {
>
>                 return;
>         }
> ......
> }
>
>
> So when I write return, the packet is dropped or not?
>
>
> I have not seen any network queue in the simulator.
>
> Am i missing something??
>
>
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