[Ndn-interest] Interest Order Maintaining

Nitinder Mohan nitinder1369 at iiitd.ac.in
Sat Feb 14 05:35:32 PST 2015


Hi Junxiao,

Wouldn't this hamper working of multimedia applications that require live
streaming of data? If the interest for next chunk of data has to wait until
the earlier chunk has arrived, wouldn't this slow down data transfer rate
considerably?

Thanks and Regards

Nitinder Mohan
MTech (CE) IIIT Delhi
http://home.iiitd.edu.in/~nitinder1369/

On Sat, Feb 14, 2015 at 6:56 PM, Junxiao Shi <shijunxiao at email.arizona.edu>
wrote:

> Hi Nitinder
>
> NDN network does not guarantee in order delivery. An Interest could also
> be delivered to the producer multiple times.
>
> It's advised that apps are designed to not require in order delivery.
>
> If an app requires in order Interest delivery, one choice is to implement
> stop and wait: consumer sends the next Interest after previous ones are
> answered.
>
> Yours, Junxiao
> On Feb 14, 2015 3:50 AM, "Nitinder Mohan" <nitinder1369 at iiitd.ac.in>
> wrote:
>
>> Hello All!
>>
>> A curious question comes to my mind regarding routing strategy in NDN.
>>
>> Let us assume that there is one consumer and one producer in a network
>> consisting of myriad of routers. If a consumer issues continuous interests
>> for different data packets from the same producer, is it guaranteed that
>> the Interest packets will arrive at producer in the same order as in which
>> they were published?
>>
>> I understand that NDN follows multipath routing and later selects paths
>> from its PIT entry according to performance of returning data. But wouldn't
>> consecutive interests be sent on the same interface presuming there is no
>> change in the network.
>>
>> Thanks and Regards
>>
>> Nitinder Mohan
>> MTech (CE) IIIT Delhi
>> http://home.iiitd.edu.in/~nitinder1369/
>>
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>>
>>
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