[Olsr-users] Cannot communicate 2 hops away

[Markus Kittenberger]

On Tue, May 10, 2011 at 6:08 AM, RC Loh <(spam-protected)> wrote:

> Hi,
>
>
>
> I have 3 MacBook Pro running OLSRD 0.6.0 with their IP addresses as shown
> below:
>
1. use a newer olsr version,..
(0.6.1 or stable tip)

it will not necessarily help, but we might be more interested in the bug,..

>
>
>
>
> 10.10.10.13/24                10.10.10.12/24            10.10.10.15/24
>
> (macbook13)                    (macbook12)                (macbook15)
>
>
>
>
>
> When I placed all the 3 MacBooks close together, all of them can PING to
> each other.
>
ok at least the wifi connection is configured, .. (-;

>
>
> When I placed macbook13 far away from macbook15 such that the routing table
> of macbook13 did not have the DIRECT route to macbook15 but only had the
> route to macbook12. The PING started to fail.
>
maybe try same scenario without olsrd, and static routing ,..

>
>
> Below are 2 questions:
>
>
>
> 1) When I did a PING from macbook13 to macbook15, I did not received a
> response from macbook15. Why?
>
hmm hoenstly, answer for this you have to answer yourself,

as it just might be an olsrd problem,..

>
>
> 2) When I brought all the 3 MacBooks back to close together, they still
> cannot PING to each other. Why?
>
anything is possible *G

>
>
> Anything that I configured wrongly?
>
very likely,..

>
>
> Any advise is appreciated.
>
ok as my above answers, where for sure not very helpful,.. (but your
bugreport wasn`t aswell (-;)

check with txtinfo on each olsrd node, if it sees the neighbours u think it
should see
and which routes it calculated,..

afterwards check if this routes are in kernel aswell

for your setup where 13 could not see 15, but both see 14

it should look like this

13:
direct route to 14
15 reachable via 14

14:
direct route to 13
direct route to 15

15:
direct route to 14
13 reachable over 14

if you have this routes in kernel (as olsrd wrote them , or cause you
configured them manually) and you still can not ping between 13 and 15, you
have no routing/olsrd problem but something else is broken,..

e.g. u did not eneable forwarding on 14 (and/or bsd olsrd version failed to
do this for you)
or you still have firewall rules, or spoof filter stuff enabled, or ...

Markus

>
>
> Thanks in advance.
>
>
>
> Rdgs,
>
> Paul
>
>
>
> --
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>
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