---------- Forwarded message ----------
From: Theodoros Bourchas <bourchast@gmail.com>
Date: Fri, Feb 21, 2014 at 6:28 PM
Subject: Re: [ibr-dtn] Fragmentation issue
To: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>

Hi again,

I have set 

option fragmentation yes

option blocksize       100K

and I sent 1M file with tar -cf - <filename> | dtnsend dtn://host2/inboxReceiver.

I expected to see 10 bundles created at the bundle layer, but only one bundle of 1M is created.

At the same time, on the receiver side, I observed only one bundle of 1M.

How can I see the pro-active fragmentation? Does it take place with the aforementioned commands?

What is the expected size of bundles in the receiver's side? 100K or not?

Thanks in advance,

Theodoros

On Fri, Feb 14, 2014 at 4:34 PM, Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de> wrote:

Hello Theodoros.

Am 14.02.2014 13:22, schrieb Theodoros Bourchas:
> option foreign_blocksize        100K

This options tells the daemon to reject all bundles larger than 100K.
If you like to fragment bundles pro-actively, you have to do that on the
sender of the bundle. Thus, set the block_limit and fragmentation there.
Generally, pro-active fragmentation is never done on the path except for
reactive fragmentation during tcp transmissions.

Kind regards,
Johannes  Morgenroth

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