[Olsr-users] Why BMF is forwarding the multicast packetsas unicast?

Erik Tromp (spam-protected)
Wed Oct 24 22:02:59 CEST 2007


Javier,

I think your problem is different.

Does a ping to 224.0.0.1 work at all in your network? Just connect all
the nodes to one network, via an (Ethernet) hub or switch (without using
olsr),
then ping 224.0.0.1 . You should receive a response from all the connected
hosts.
If you do not receive a response from all connected nodes, then there is a
problem outside of OLSR-BMF. Perhaps firewall settings, blocking ICMP
traffic?

Erik

 

-----Oorspronkelijk bericht-----
Van: (spam-protected)
[mailto:(spam-protected)] Namens JAVIER ARAGON DEL CAZ
Verzonden: woensdag 24 oktober 2007 9:04
Aan: olsr-users
Onderwerp: Re: [Olsr-users] Why BMF is forwarding the multicast packetsas
unicast?

I have a similar problem, i have post it just before you!

My problem is that i make a ping how is said at the readme file, but it
doesn't work.

my quetion is ┬┐Does Multicast work in an Ad-hoc network with olsr?

----- Mensaje original -----
De: (spam-protected)
Fecha: Martes, Octubre 23, 2007 7:05 pm
Asunto: [Olsr-users] Why BMF is forwarding the multicast packets as
unicast?
Para: olsr-users <(spam-protected)>

> Greetings,
> 
> The scenario consists of two nodes working in ad-hoc mode with each
> 
> node running olsr v-0.5.3 and BMf plugin 1.5.1. In my case, If Node A 
> generates the multicast traffic with MGEN then instead of receiving
> 
> the multicast packtes the Node B receives the unicast packtes and it 
> ackknowledges the individual packtes as well. I am using 235.1.1.12 as 
> the multicast address.
> 
> This behavior has been observed by capturing the packets on Node B 
> using WireShark and even by sniffing the 802.11 traffic and each 
> packet has its src.addr [Node A] and dest.adr [Node B] --> not 
> 235.1.1.12.
> 
> Ok, the same is true if the ad hoc network consist of three nodes with 
> olsr-bmf running.
> 
> I have the following lines for the OLSR-BMF,
> 
>   LoadPlugin "olsrd_bmf.so.1.5"
>   {
>       PlParam "BmfInterface" "bmf0"
> 	PlParam "CapturePacketsOnOOlsrInterfaces" "yes"
>   }
> 
> Curious to know the reason.
> 
> Best wishes,
> Aamir
> 
> 
> 
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> 

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