[ndnSIM] "Nonce" field in Data Packet?

Alex Afanasyev alexander.afanasyev at ucla.edu
Fri May 24 09:45:02 PDT 2013


I see your point. I would agree that on the same node/router it would be useful to know from which face a specific data packet arrived.  There is already this information inside forwarding-strategy.  I can also make this available for applications using packet tags.

---
Alex

On May 24, 2013, at 12:05 PM, Smallcat <huyao0107 at gmail.com> wrote:

> Hi Alex,
> 
> Thanks for immediate reply. 
> What I thought is how to differentiate the same data from one data provider BUT from different faces? Since I thought it may be useful to have some knowledge of data returning path. Do you think this kind of information is meaningful? Or my thought is simply not on the right track?
> 
> Regards,
> huyao
> 
> 
> 在 2013-5-25,0:50,Alex Afanasyev <alexander.afanasyev at ucla.edu> 写道:
> 
>> Hi huyao,
>> 
>> Concept of nonce makes sense only for interest packets, to identify the same interests and prevent forwarding loops. 
>> 
>> If there are different producers generating data within the same namespace, you can simply ask the producers to append a unique component to the name of the generated packet.  (Ideally, all packets in NDN network have unique names.). Would this work for you?
>> 
>> ---
>> Alex
>> 
>> On May 24, 2013, at 11:35 AM, Smallcat <huyao0107 at gmail.com> wrote:
>> 
>>> 
>>> Hi Alex,
>>> 
>>> Is there a field like Interest Nonce field in Data packet that is used to differentiate multiple data with same name? Can ContentOptions be seen that kind of field? If yes, can I have a direct control of its value?
>>> 
>>> Thanks a lot~
>>> 
>>> Regards,
>>> huyao
>>> 
>>> 
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