[ndnSIM] [EXT] How to limit the hop count of interest

[Junxiao Shi]

Hi Shuai

HopLimit=1 means the Interest can traverse no more than 1 network hop.
The receiving node will process the packet, including cache matching and
forwarding to local producer, but cannot forward it to another node.

Yours, Junxiao

On Thu, Dec 10, 2020, 22:39 Shuai Dong <sdong7 at crimson.ua.edu> wrote:

> *External Email*
> Hi Junxiao,
>
> Thanks for your reply.
> I still have one more question: If I use interest.SetHopLimit(1), does
> that mean the interest can only be sent from the consumer to its one-hop
> neighbors, like the Time to Live(TTL)? The nodes, which receive the
> interest, will not do the further process?
>
> Thanks!
> SIncerely
> Shuai
>
>
> On Thu, Dec 10, 2020 at 10:55 AM Junxiao Shi <shijunxiao at email.arizona.edu>
> wrote:
>
>> Hi Shuai
>>
>> In 2.x you should use interest.setHopLimit() function.
>>
>> https://named-data.net/doc/ndn-cxx/current/doxygen/d1/d81/classndn_1_1Interest.html#a33854e8ba70b44041591610c816c3b1f
>> It's the number of network hops. Connection between application and local
>> forwarder does not count.
>>
>> Yours, Junxiao
>>
>> On Thu, Dec 10, 2020, 10:26 Shuai Dong <sdong7 at crimson.ua.edu> wrote:
>>
>>> *External Email*
>>> Hi Junxiao,
>>>
>>> Thanks for your information! Can I also achieve that in ndnSIM 2.7?
>>> Because I didn’t see the scope in interest.cc.
>>>
>>> If so, which script can I use?
>>>
>>> Thanks!
>>> Sincerely
>>> Shuai
>>>
>>> Junxiao Shi <shijunxiao at email.arizona.edu>于2020年12月10日 周四上午8:27写道：
>>>
>>>> Hi Shuai
>>>>
>>>> You are looking at ndnSIM 1.x that implements CCNx 0.x protocol.
>>>>
>>>>
>>>> https://github.com/ProjectCCNx/ccnx/blob/5089b9ae65b7879eec97588f3d947ea442d695e6/doc/technical/InterestMessage.txt#L136
>>>> Scope 2 is what you need.
>>>>
>>>> Yours, Junxiao
>>>>
>>>> On Wed, Dec 9, 2020, 22:06 Shuai Dong via ndnSIM <
>>>> ndnsim at lists.cs.ucla.edu> wrote:
>>>>
>>>>> *External Email*
>>>>>
>>>> Hi All,
>>>>>
>>>>> The scenario is:
>>>>>
>>>>> There are three NDN nodes A, B, C.  A creates an interest packet and
>>>>> broadcasts to its one-hop neighbors B and C.
>>>>> If I do not want B and C to relay the interest to their neighbors
>>>>> after receiving the interest from node A, is there any way that I can
>>>>> achieve that?
>>>>>
>>>>> I see there is a "void SetScope(int8_t scope)" in the
>>>>> ns3::ndn::Interest class. Is it useful to help me achieve this?
>>>>>
>>>>> Thanks!
>>>>> Sincerely
>>>>> Shuai
>>>>>
>>>> _______________________________________________
>>>>> ndnSIM mailing list
>>>>> ndnSIM at lists.cs.ucla.edu
>>>>> http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim
>>>>>
>>>>
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