[OLSR-users] Question about OLSR

[ap]

Gecko64 wrote:
> Hello, i've got a question about OLSR.
> I've test this protocole with 3compunters (compunter A B and C).
> 
> A saw B and B saw C but C didn't saw A and when i've test in 11mbps, 
> i've see a ping of 30ms between A and B and the same between B and C and 
> i had a total ping of 60ms.

this sounds reasonable for me. 30+30=60, so no extra delay is caused by 
routing.

> 60ms is not a lot yes but in the network than i'm building in my 
> country, i'll have sometime 50 nodes between 2 compunters :-s

if you have a mesh network with a diameter of 50, you will most likely 
have more than 2000 nodes running. i don't think olsr, or any other 
existing MANET implementation, can handle that. your bandwidth will be 
saturated by control messages alone.

> The question than i'm asking was if it was possible to have a ping of 
> 30ms between A and C? If it's possible to optimise this lag... or if it 
> existe an other protocol which one i'll not have this problem?

the delay is most likely NOT caused by olsr. olsr just builds the 
reouting tables. afaik, the actual forwarding of packets is handeled by 
your operating system. switching the routing protocol will not improve 
the performance.
to improve the ping times i would suggest the following:

1) try 54 mbps hardware.
2) use a processor with at least 200 mhz.
3) use an operating system that has a good routing performance.
avoid using windows 95/98/ME. use linux, or, if you are bound to 
windows, use XP or 2000.

greetings
andreas