[Ndn-interest] NDN packet size

Klaus Schneider klaus at cs.arizona.EDU
Tue Mar 28 14:45:48 PDT 2017


Those are all good reasons. Thanks for the clarification.

Klaus

On 03/28/2017 02:40 PM, Nick Briggs wrote:
> It gets you 8K bytes of data along with necessary metadata and a name that isn't too long in a Content packet.
> It can be encapsulated in a UDP packet with about 6 fragments when you're do IP encapsulation. (max UDP is 64K bytes)
> It fits within a 9000 byte jumbo ethernet frame if you're doing direct ethernet encapsulation.
>
> -- Nick Briggs
>
>> On Mar 28, 2017, at 2:35 PM, Klaus Schneider <klaus at cs.arizona.EDU> wrote:
>>
>> Btw, what was the reason for setting the default max packet size to 8800 in the first place?
>>
>> Is there any drawback to increasing the default, to let's say 1 Megabyte?
>>
>> Best regards,
>> Klaus
>>
>>
>>
>> On 03/28/2017 02:01 PM, Alex Afanasyev wrote:
>>> The new ndn-cxx needs to be recompiled and installed, after which all
>>> other tools and code needs to be recompiled and reinstalled.
>>>
>>> The packet size is used as a compile-time constant in several places
>>> (definitely in NFD, not sure about tools), which requires such
>>> recompilation.
>>>
>>> --
>>> Alex
>>>
>>>> On Mar 28, 2017, at 3:55 PM, Thompson, Jeff <jefft0 at remap.UCLA.EDU
>>>> <mailto:jefft0 at remap.UCLA.EDU>> wrote:
>>>>
>>>> A question to the NFD team: To increase the packet size, is it
>>>> necessary to recompile/install ndn-cxx, then recompile/install NFD?
>>>> - Jeff T
>>>>
>>>> From: Mohammad Alhowaidi <malhowaidi at gmail.com
>>>> <mailto:malhowaidi at gmail.com>>
>>>> Date: Tuesday, March 28, 2017 at 13:53:00
>>>> To: Jeff Thompson <jefft0 at remap.ucla.edu <mailto:jefft0 at remap.ucla.edu>>
>>>> Cc: "Spyridon (Spyros) Mastorakis" <mastorakis at cs.ucla.edu
>>>> <mailto:mastorakis at cs.ucla.edu>>, "ndn-interest at lists.cs.ucla.edu
>>>> <mailto:ndn-interest at lists.cs.ucla.edu>"
>>>> <ndn-interest at lists.cs.ucla.edu <mailto:ndn-interest at lists.cs.ucla.edu>>
>>>> Subject: Re: [Ndn-interest] NDN packet size
>>>>
>>>> I am using ndn-cxx and running the ndn-tool code ( chunks). and yes I
>>>> am sending it through NFD.
>>>>
>>>> Thanks,
>>>> Mohammad
>>>>
>>>> On Tue, Mar 28, 2017 at 3:50 PM, Thompson, Jeff <jefft0 at remap.ucla.edu
>>>> <mailto:jefft0 at remap.ucla.edu>> wrote:
>>>>> Which library are you using? And are you sending the packet through NFD?
>>>>> - Jeff T
>>>>>
>>>>> From: Ndn-interest <ndn-interest-bounces at lists.cs.ucla.edu
>>>>> <mailto:ndn-interest-bounces at lists.cs.ucla.edu>> on behalf of
>>>>> Mohammad Alhowaidi <malhowaidi at gmail.com <mailto:malhowaidi at gmail.com>>
>>>>> Date: Tuesday, March 28, 2017 at 13:47:00
>>>>> To: "Spyridon (Spyros) Mastorakis" <mastorakis at CS.UCLA.EDU
>>>>> <mailto:mastorakis at CS.UCLA.EDU>>
>>>>> Cc: "ndn-interest at lists.cs.ucla.edu
>>>>> <mailto:ndn-interest at lists.cs.ucla.edu>"
>>>>> <ndn-interest at lists.cs.ucla.edu <mailto:ndn-interest at lists.cs.ucla.edu>>
>>>>> Subject: Re: [Ndn-interest] NDN packet size
>>>>>
>>>>> I updated the file with value 32767 but it gives me the following error
>>>>>
>>>>> ERROR: Data size exceeds maximum limit
>>>>>
>>>>> Thanks,
>>>>> Mohammad
>>>>>
>>>>> On Tue, Mar 28, 2017 at 1:03 PM, Spyridon (Spyros) Mastorakis
>>>>> <mastorakis at cs.ucla.edu <mailto:mastorakis at cs.ucla.edu>> wrote:
>>>>>> Hi,
>>>>>>
>>>>>> you can change this constant in the ndn-cxx library:
>>>>>>
>>>>>> https://github.com/named-data/ndn-cxx/blob/e78eeca5cc6c882ea1c72daaffc7678bf42f526b/src/encoding/tlv.hpp#L37
>>>>>> <https://github.com/named-data/ndn-cxx/blob/e78eeca5cc6c882ea1c72daaffc7678bf42f526b/src/encoding/tlv.hpp#L37>
>>>>>>
>>>>>> Not clear to me if there will be further issues because of this
>>>>>> change though.
>>>>>>
>>>>>> Hope that this helps,
>>>>>>
>>>>>> Spyridon (Spyros) Mastorakis
>>>>>> Personal Website: http://cs.ucla.edu/~mastorakis/
>>>>>> <http://cs.ucla.edu/%7Emastorakis/>
>>>>>> Internet Research Laboratory
>>>>>> Computer Science Department
>>>>>> UCLA
>>>>>>
>>>>>>> On Mar 28, 2017, at 11:02 AM, Mohammad Alhowaidi
>>>>>>> <malhowaidi at gmail.com <mailto:malhowaidi at gmail.com>> wrote:
>>>>>>>
>>>>>>> Hello,
>>>>>>>
>>>>>>> I was wondering how to increase NDN packet size, instead of using
>>>>>>> 8K? and is there any limitation from increasing it?
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Mohammad
>>>>>>
>>>>>
>>>>
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