[Olsr-users] OLSR between different networks

[Henning Rogge]

Your problem will be that routing protocols NEED access to the
broadcast/linklocal-multicast address.

Most radios should support this (on layer 1), because broadcast is a
natural attribute of all wireless connections. Is there a special
reason why your radio does NOT support broadcast?

Henning

On Fri, May 10, 2013 at 3:10 PM, Breno Silva <(spam-protected)> wrote:
> All computer has one ethernet interface with the Radio and the Radio will
> comunicate each other with another Wireless interface.
>
> So a node for me is a group of computer+radio
>
>
> On Fri, May 10, 2013 at 10:07 AM, Henning Rogge <(spam-protected)>
> wrote:
>>
>> How many wireless interfaces does computer 2 have? One or two?
>>
>> Henning
>>
>> On Fri, May 10, 2013 at 3:05 PM, Breno Silva <(spam-protected)>
>> wrote:
>> > Right so let's suppose we have this env
>> >
>> > computer1  <->  computer2 <->  computer3
>> >
>> > - Computer1 sends hello msgs to Computer2
>> > - Computer2 sends hello msgs to Computer1 and Computer3
>> > - Computer3 send hello msgs to Computer2
>> >
>> > I suppose all nodes will know theirs neighbors. This is not true ?
>> >
>> > Thanks
>> >
>> >
>> > On Fri, May 10, 2013 at 9:57 AM, Henning Rogge <(spam-protected)>
>> > wrote:
>> >>
>> >> That would only work if you have exactly two nodes on an interface,
>> >> the local one and the "other one". In this case you could set the
>> >> broadcast address to the unicast address.
>> >>
>> >> With more nodes it would not work, because the routing protocol learns
>> >> about the neighbors by listening to the multicast/broadcast packets.
>> >>
>> >> Henning
>> >>
>> >> On Fri, May 10, 2013 at 2:54 PM, Breno Silva <(spam-protected)>
>> >> wrote:
>> >> > i mean If(dst_addr == broadcast)
>> >> >
>> >> > thanks
>> >> >
>> >> >
>> >> > On Fri, May 10, 2013 at 9:51 AM, Breno Silva <(spam-protected)>
>> >> > wrote:
>> >> >>
>> >> >> Hello guys,
>> >> >>
>> >> >> There is a limitation. Looks like the Radio does not work with
>> >> >> broadcast
>> >> >> address. So maybe i can change the function olsr_sento() function to
>> >> >> detect
>> >> >> when the destination addr is broadcast and change it to the unicast
>> >> >> addrs:
>> >> >>
>> >> >> If(src_addr == broadcast)
>> >> >>    for(all unicasts)
>> >> >>      sendto(unicast[i])
>> >> >> endif
>> >> >>
>> >> >> Do you think this hack will work ?
>> >> >>
>> >> >> Thanks
>> >> >>
>> >> >> Breno
>> >> >>
>> >> >>
>> >> >> On Thu, May 9, 2013 at 12:26 PM, Breno Silva <(spam-protected)>
>> >> >> wrote:
>> >> >>>
>> >> >>> Thanks Henning,
>> >> >>>
>> >> >>> I will be able to test it soon. Then i can give a feedback.
>> >> >>>
>> >> >>> Breno
>> >> >>>
>> >> >>>
>> >> >>> On Thu, May 9, 2013 at 9:32 AM, Henning Rogge
>> >> >>> <(spam-protected)>
>> >> >>> wrote:
>> >> >>>>
>> >> >>>> As long as you do not reuse the same address, OLSR will work.
>> >> >>>>
>> >> >>>> It will set up a host-route (a /32 route) to each of the mesh
>> >> >>>> nodes,
>> >> >>>> which means the different networks do not really matter for OLSR.
>> >> >>>>
>> >> >>>> Henning Rogge
>> >> >>>>
>> >> >>>> On Thu, May 9, 2013 at 2:21 PM, Breno Silva
>> >> >>>> <(spam-protected)>
>> >> >>>> wrote:
>> >> >>>> > Hello,
>> >> >>>> >
>> >> >>>> > I would like to setup OLSR between some computers, however each
>> >> >>>> > computer is
>> >> >>>> > connected in a Radio (ethernet interface) and they transmit data
>> >> >>>> > to
>> >> >>>> > each
>> >> >>>> > other using a wireless radio interface.
>> >> >>>> >
>> >> >>>> > The radio is Half-Duplex and i already com send IP/UDP data to
>> >> >>>> > each
>> >> >>>> > other.
>> >> >>>> > This is a common flow to send/recv data
>> >> >>>> >
>> >> >>>> > COMPUTER1 (10.1.1.2)  <-> (10.1.1.1) RADIO1 ( 192.168.0.1)
>> >> >>>> > <------------------>              (192.168.0.2) RADIO2
>> >> >>>> > (10.1.2.1)
>> >> >>>> > <->
>> >> >>>> > COMPUTER2 (10.1.2.2).
>> >> >>>> >
>> >> >>>> > So each computer is a member of different network. I would like
>> >> >>>> > to
>> >> >>>> > know if
>> >> >>>> > the OLSRD will work with this environment.
>> >> >>>> >
>> >> >>>> > Thanks
>> >> >>>> >
>> >> >>>> > Breno
>> >> >>>> >
>> >> >>>> > --
>> >> >>>> > Olsr-users mailing list
>> >> >>>> > (spam-protected)
>> >> >>>> > https://lists.olsr.org/mailman/listinfo/olsr-users
>> >> >>>>
>> >> >>>>
>> >> >>>>
>> >> >>>> --
>> >> >>>> We began as wanderers, and we are wanderers still. We have
>> >> >>>> lingured
>> >> >>>> long enough on the shores of the cosmic ocean. We are ready at
>> >> >>>> last
>> >> >>>> to
>> >> >>>> set sail for the stars - Carl Sagan
>> >> >>>
>> >> >>>
>> >> >>
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> We began as wanderers, and we are wanderers still. We have lingured
>> >> long enough on the shores of the cosmic ocean. We are ready at last to
>> >> set sail for the stars - Carl Sagan
>> >
>> >
>>
>>
>>
>> --
>> We began as wanderers, and we are wanderers still. We have lingured
>> long enough on the shores of the cosmic ocean. We are ready at last to
>> set sail for the stars - Carl Sagan
>
>



-- 
We began as wanderers, and we are wanderers still. We have lingured
long enough on the shores of the cosmic ocean. We are ready at last to
set sail for the stars - Carl Sagan