[Olsr-users] Current OLSR protocol

[Henning Rogge]

Am Tuesday 02 June 2009 02:13:38 schrieb Juliusz Chroboczek:
> Much as I dislike Elektra and like you, Aaron, I think there's no
> denying that there is a lot of anecdotical evidence that naïve
> link-state, as embodied by OLSR, does not work well in wireless mesh
> networks.

When the development of the OLSR RFC began (OLSR Draft v0 was published in the 
end of 1998), there was no cheap consumer hardware to test adhoc networks, so 
must of the new ideas were tested in simulations. One common radio model for 
simulation (even today !) is tworayground, which gives you perfect 
transmissions up to a certain range (and none after this point). Of course hop 
count metrics work very well in this kind of simulations.
(I looked through some drafts, but was unable to find a v0 draft for a mesh 
net protocol on the IETF page before 1998)

I think one of the reasons for the OLSRv2 Drafts is the feedback from real 
world mesh nets and problems with the first specification, especially the lack 
of support for routing metrics, the difficulty to add stuff to existing OLSR 
messages without breaking compatiblity and the MID messages (which ARE a pain 
in the ass because of synchronization issues).

Similar to many other mesh net protocols the development of OLSR did not 
stopped with the RFC.

-- 
Henning Rogge

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