[Olsr-users] Current OLSR protocol

[Hilton Garcia Fernandes]

Hi, Damian, 

a thread in olsr-dev gave some hints on what you're asking. I'm also a 
newcomer to OLR that asked similar questions there and ppl were kind enough 
to answer. I point you to their archive, at 
http://lists.olsr.org/pipermail/olsr-dev/

It looks like MPR doesn't scale very well for larger networks. So, our small 
APs wouldn't handle large networks. For instance, the ones in Berlin and 
Vienna, with hundreds of APs. 

Probably there's a threshold where MPR is still usable.

The olsrd group did a refactoring of their olsrd code (yielding olsr-ng), what 
yielded large speedups. It seems MPR is still in the code, but they dedicated 
most of the optimization time to routing protocols like OSPF. 

Part of the scaling problems were in the poor implementation. The experience 
of olsr-ng group can be read
http://marvin.funkfeuer.at/~aaron/olsr-ng.pdf

All the best, 
hilton 

On Friday 22 May 2009 10:46:57 Damian Philipp wrote:
> Hello,
>
> I'm currently gathering some information about available routing protocols
> for mesh networks for my diploma thesis. So far, I have found rather
> confusing things about OLSR. From http://www.olsr.org/?q=background I
> gathered that most of the optimizations to get olsr working were code
> improvements. However, https://www.open-mesh.org/wiki/the-olsr-story paints
> a somewhat different picture with inherent instabilities in the original
> concept of olsr which is why they started over with BATMAN.
>
> From what I've read on the freifunk homepage, olsr is still widely in use
> on freifunk networks. I'm guessing that they are probably using the latest
> stable olsrd from olsr.org. However what I have not been able to find out
> is what protocol the current implementation from olsr.org is using. Is it
> still RCF-3626 compliant or does it rather contain all the optimizations
> from the C-Base people, thus breaking RFC compliance?
>
> As part of my thesis I will have to experiment with some extensions to the
> OLSR protocol. In order to be able to design those, I'd like to know the
> protocol I'm actually using ;-)
>
> I did find the OLSRv2-Draft at
> http://www.ietf.org/internet-drafts/draft-ietf-manet-olsrv2-08.txt. This
> however still contains Multipoint relays, which as mentioned on
> open-mesh.org seem to be (have been?) one of the bigger issues -- thus my
> confusion.
>
> Thank you in advance,
> Damian Philipp



-- 
Hilton Garcia Fernandes
Nucleo de Tecnologias sem Fio (NTSF) -- Wireless Technologies Team
Lab de Sistemas Integraveis Tecnologico (LSI) -- Integrable Systems Lab
Escola Politecnica (Poli) -- Engineering School
Univ S Paulo (USP)
Tel: (5511)3091-5661 (work)
     (5511)8131-5213 (mobile)
Av. Prof. Luciano Gualberto,158 trav.3 CEP 05508-900
S. Paulo -- SP -- Brazil
Pagina inicial: http://www.lsi.usp.br/~hgfernan