[Olsr-users] Need to setup the -OLSR-live video- demo with 4-5 Computers

[Markus Kittenberger]

olsr will do so as u wanted, but,..
.
but it needs to loose several hello messages till link costs raise enough to
take the other (initially quite longer) route
so the hello interval must be about 1/10 of the reaction time you want to
reach (=RT)
.
furthermore the changes need to be reported to all nodes, so the tc interval
must be about 1/5 of RT
.
next all nodes must process (and forward) the messages very fast, so the
polling interval should be around 1/10 of RT
.
and finally all nodes must recalculate their routing very fast, so the
dijktra limit (minimal interval) must be at least 1/2 of rt
.
one hint if your setup is only a-b-c-a, and u want to stream between a and
c, and u drop the link c-a, it will react faster, as the alteernative path
is shorter/cheaper than your intended setup,...
regards Markus
p.s. abovenumbers are only good guesses from my side, so please report your
experience with them, or maybe henning will write a mail as he knows more
about fast reacting olsr setups than me

On Thu, Aug 6, 2009 at 10:50 AM, <(spam-protected)> wrote:

>  Thnaks Markus
> Actually I need to make the setup using 5-6 Personal Computers only. I
> wanted to demonstrate the OLSR using the live video. for example suppose I
> have 5 nodes (PC) lets say A, B, C, D, E.
> connected in circular fashion A->B->C->D->E->A. I am running the video from
> A->C through the relays B  (at any point of time). now for test lets say the
> node B is down (drop the entire traffic here only forcibly). Then immediatly
> the traffic should be rerouted via E and D (A->E->D->C).
>  If I am not wrong OLSR should take care of this functioning?. and if my
> assuption is right, How much time will it take to reroute (for how much time
> the video will be off) through E and d if B is down?
>
> Can you guide about this if I am not wrong........
>
>
>  ------------------------------
> *From:* (spam-protected) [mailto:
> (spam-protected)] *On Behalf Of *Markus Kittenberger
> *Sent:* Thursday, August 06, 2009 2:09 PM
> *To:* Vijai Kumar (WT01 - Joint CEO Office)
> *Cc:* (spam-protected)
> *Subject:* Re: [Olsr-users] Need to setup the -OLSR-live video- demo with
> 4-5 Computers
>
> for uninterrupted voip & co u need to use very very short timings, which in
> small networks will work, but (at the moment) will not scale in larger
> networks,..
> Markus
>
> On Thu, Aug 6, 2009 at 6:07 AM, <(spam-protected)> wrote:
>
>>  Hi,
>>     I need to setup the OLSR demo with 4-5 Pcs connected via cross cables.
>>     I got the release 5 code from the site. Now I will start the
>> compilation and other configuration.
>>
>> *Question:*
>> Can I make the setup using the OLSR to show the live video or chat
>> in-between the two computers. Actually I have been assigned to make a demo
>> of OLSR protocol in which we can show the communication (like live video or
>> chat) and then if one node (Computer basically) is deleted in the path then
>> the video/chat should not be affected as it should take another route in
>> this case.
>>
>> *Can Anybody suggest me how we can do this using OLSR?  Can we achieve
>> this functionality using the OLSR code standalone or we would need to
>> integrate OLSR with other application if yes then how?????*
>>
>> Thanks in Advance
>>
>> Vijai Kumar
>> Technical Specialist
>> Wipro Technologies.
>> (spam-protected)
>>
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