Multiple gateways support

[Michael Proto]

On Wed, Apr 6, 2011 at 8:02 AM, J. Hellenthal <jhell at dataix.net> wrote:
> On Wed, Apr 06, 2011 at 01:45:54PM +0400, Eir Nym wrote:
>> On 1 April 2011 21:27, Baginski Darren <kickbsd at yandex.ru> wrote:
>> > Hi!
>> >
>> > Could please someone tell me about current state of multiple gw capabilities of FreeBSD?
>> > I have dual homed FreeBSD box, one interface ISP1 another ISP2 :
>> > 1) can I balance outgoing traffic across them ?
>> > 2) Is there support of any kind dead gateway detection?
>> > 3) Can I install multiple routes to the same network (with same and with different wight)? If yes how it behaves with one link failure, in particular if interface is down?
>> >
>
> From what you said here it seems that your looking for lagg(4) with
> configured with the loadbalance option. Give this man page [1] a
> thorough read and youll probably see what your looking for.
>
> 1) http://www.freebsd.org/cgi/man.cgi?query=lagg
>
>
>>
>> about multiply GWs: you can set multiply gw via setfib(1) utility and
>> use fib in your firewall rules. But it is not very handy with DHCP and
>> rc(8) (setfib is located in /usr/bin and can't be used in /etc/rc.d).
>> Due to this I have to add another FreeBSD box to handle dynamic
>> routes.
>>
>> This is the one thing I know which can I do in linux easily and in
>> freebsd with hacks.
>
> --
>
>  Regards,
>
>  J. Hellenthal
>  JJH48-ARIN
>  0x89D8547E
>
>


I don't think lagg(4) will work here, as its designed for two
interfaces that are attached to the same network (see the example in
the man page). For two different ISPs, I think the setfib approach is
probably the way to go.


-Proto