Broadcast-Storm

[Sich]

Le 16/03/2010 17:32, Markus Dangl a écrit :
> Hi,
>
> I've got a small tinc network (switched) set up and it usually works
> fine. But sometimes i get echos from my own broadcasts and sometimes
> this even leads to a broadcast storm (two nodes forwarding the
> broadcasts in circle, thus flooding the whole network with copies of the
> same packet).
>
> I'm currently unsure on how to debug this using tinc. So my questions are:
>   - How does tinc handle broadcasts when in switching mode? Does tinc
> understand STP? (I usually enable STP on all my linux bridges).
>   - Not all of the clients update their tinc clients regularly, so i
> might have several tinc versions from 1.0.9 to 1.0.12 in my net. Could
> it be that incompatibilities between these versions are responsible for
> this?
>
> B.t.w.:
>
> Sadly not all of the installations are maintained by people that
> actually know a lot about network stuff. Also, a lot of the nodes run on
> Windows :/ so i don't have a portable way to use packet filtering on all
> nodes.
>
> A nice-to-have feature for tinc would be to have some filtering options,
> maybe even a real packet filter (like those *-tables tools on linux). I
> see that that's not really tincs job, but there currently is no portable
> way of packet filtering, but tinc could do it :)
> If there are more people that could make good use of such a feature i
> might just start experimenting a little with the tinc sources.
>
> With kind regards,
> Markus Dangl
> _______________________________________________
> tinc mailing list
> tinc at tinc-vpn.org
> http://www.tinc-vpn.org/cgi-bin/mailman/listinfo/tinc
>    

Hello,

Have you tried to use Spanning Tree Protocol ? Perhaps this could help.
And for filtering you should watch on ebtables for linux station...

Sich