[wsfii-discuss] <newbie> olsr

Sun Sep 10 09:39:36 UTC 2006

hi,

maybe the best place to ask about olsr is his website: http://www.olsr.org

their mailist: http://olsr.org/index.cgi?action=mlist

cheers

en/na Hitesh Shetty va dir:
> Hello Every Body,
> My name is Hitesh Shetty,
> I wanted some information about OLSR.
> Actually I have interest in the functioning of olsr.
> I wanted to know as much about the olsr as possible.
> Im quite familiar with some basics which I've read from books.
>
> Allow me to transcript what I know and please correct me wherever
> appropriate.
>
> Need for Ad-Hoc routing algorithms:
>
> 1) Traditional wired routing algo's will not work effeciently or fail
> totally since these algorithms have not been designed for a highly
> dynamic topology, assymetric links or interference.
>
> 2) Routing in ad-hoc n/w cannot rely on layer-3 alone, routing info
> should be based on lower layers (radio links) for issues of
> connectivity or interference.
>
> 3) A centralized approach can easily prove to be a bottle neck.
>
> 4) Many nodes need routing capabilities.
>
> 5) Ad-hoc networks would have to work mostly based on connectionless
> principle, reason being that if a 3-way TCP handshake is established
> for each and every request , with dynamic changing routing information
> , establishment and maintenance of connection causes a lot of
> overhead.
>
>
> Existing Ad-Hoc routing algorithms:
>
> 1) AODV : - Ad-Hoc on demand distance vector (DSDV historically)
> 2) Dynamic Source Routing.
>
> The above use number of hops as routing metric.
> However other factors should also be considered for Ad-Hoc routing.
>
> Some authors have mostly categorized Ad-Hoc routing into three categories
> :-
> 1) Flat ad-hoc routing.
> 2) hierarchical routing
> 3) geographic-position-assisted routing.
>
> OLSR:
> Open Link State Routing (OLSR) comes under Flat Ad-Hoc routing as a
> proactive protocol. DSDV also belongs to this group. OLSR along with
> Ad-Hoc routing also tries to reduce the traffic caused by link-state
> information dissemination. Advantages of OLSR is that it gives QoS
> guarantees as long as the topology does not change too
> fast. Disadvantages is that it overheads a lightly loaded network.
>
> What I need to know:
> 1) How is OLSR structured in terms of the C files it uses, (Im
> assuming that it uses C) ?
> 2) What each file does individually and how they fit in the overall
> scheme of things ?
> 3) What state is OLSR right now and what are the optimizations that
> are applied to it or will be applied to it in the future ?
> 4) Any other information about OLSR which you think can be useful and
> which I ought to know ?
>
> Thaking you in advance,
> Regards
> Hitesh Shetty
>
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>


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