January 2014 - Ibr-dtn - lists.ibr.cs.tu-bs.de

Group messaging
by Jawad Seddar 15 Jan '14

15 Jan '14

Hi, I'm trying to send bundles from one node to multiple receivers. I noticed the -g and --group options in dtnrecv and dtnsend respectively but I can't seem to find the proper way to use these options. How should I use those options? I tried using them the same way I use the --name option in dtnrecv but no luck so far... Any pointers would be appreciated. Regards, Jawad

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Implementing new routing algorithm
by Andri Jatmiko 15 Jan '14

15 Jan '14

Hi everyone, I am a new user of IBR-DTN (v 0.10.2). I need help for several problem: How to make a new routing algorithm other than epidemic or prophet for IBR-DTN, such as RAPID? What is the test bench topology for epidemic or prophet? Which classes or procedures can be used on base router for making new routing algorithm? Thanks Didit Jatmiko

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funding development
by Tom Sparks 10 Jan '14

10 Jan '14

I am looking into funding development of ibr-dtn for my own project who do i contact? --- tom_a_sparks "It's a nerdy thing I like to do" Child of the Internet born 1983 PGP ID: A7EF6006 Please use ISO approved file formats excluding Office Open XML - http://www.gnu.org/philosophy/no-word-attachments.html Ubuntu wiki page https://wiki.ubuntu.com/tomsparks

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Static route
by Jawad Seddar 10 Jan '14

10 Jan '14

Hi everyone, I am a new user of IBR-DTN (v 0.10.2) and I would like to know if it is possible to add and delete static routes while the daemon is running (e.g. through API calls) in the same way we can add and delete connections through this api command : "connection <eid> [tcp|udp|file] [add|del] <ip> <port> <global|local>". Regards, J.

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How does IBR-DTN does neighbor discovery (really)?
by Shyam B 07 Jan '14

07 Jan '14

Hi, I am posting this question after a question has boggled me quite a bit. How does DTN really do its neighbor discovery? It runs the bundle protocol and I am running OLSR protocol below it. So, basically Mobile Ad-hoc routing protocol is what runs under it. Does it do the neighbor discovery using the help of underlying Ad-Hoc routing protocol OR does it have its "own way" of neighbor discovery using beacons alone (Layer 2)? This came to me as a surprise with a scenario I was testing where DTN still detects its neighbors when one runs OLSR and other does not: 1. Run DTN + OLSR on both nodes 2. Kill OLSR on one node, DTN still detects each other. 3. Pull down wireless LAN (wlan0) on the node(not running OLSR), wait and then bring it up. One sees the DTN neighbor all the time(with OLSR), the other cannot (node without OLSR). What happened now, is this a bug? I would have expected both to detect each other now (like in point 2 above) Finally, what is the use of TCP/UDP with DTN? How do nodes detect each other, when they do not know the IP address of any other DTN node?? My work is more on using DTN for an application, so apologies, if my questions might be a bit na'ive :) I have a presentation very soon, so your answers might help me understand this part. Thanks in advance! -- Best Regards, Shyam

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