On Thu, Jul 20, 2000 at 06:48:21PM -0300, Charrua wrote:
> Hi all,
>
> > We have 2 different dedicated Internet connections (with two different
> > carriers). Naturally, each connection has different groups of IP
> > addresses. Each of the connections has a Cisco 1601 router at our end.
> > 1. We would like to use a Linux PC to balance the load (of outgoing
> > traffic from our backbone to the Internet) between the two connections.
> >
> > Someone told us that creating two default routes in the Linux machine, we
> > could achieve that goal (one default route would point to the router from
> > carrier "A", and the other default route would point to the router from
> > carrier "B". In this way we would accomplish that one outgoing packet be
> > sent through one of the routers and the next packet through the other
> > router.
> >
> > When we tried this, the Linux machine sent ALL outgoing packets through
> > the second default route (the last default route that we had created).
> >
> > The questions are:
> > - Should this work ?
> > - If so, is it necessary to recompile the kernel, or are we doing
> > something wrong ?
You probably want to compile routing multipath support in:
IP: equal cost multipath
CONFIG_IP_ROUTE_MULTIPATH
Normally, the routing tables specify a single action to be taken in
a deterministic manner for a given packet. If you say Y here
however, it becomes possible to attach several actions to a packet
pattern, in effect specifying several alternative paths to travel
for those packets. The router considers all these paths to be of
equal "cost" and chooses one of them in a non-deterministic fashion
if a matching packet arrives.
I did look very deeply at the code, but from the comments it looks like
the "nondeterministic fashion" actually produces a weighted division of
outgoint traffic.
> > 2. Does anyone know how to balance incoming traffic to our backbone ?
> > (Without having an autonomous system, which we don't have and are far
> > from having).
This is more difficult (or I did not understand what you meant). Could you
please elaborate on this?
Regards,
--
Andrea Glorioso sama(at)aglorioso(dot)com
Padua, Italy
-
To unsubscribe from this list: send the line "unsubscribe linux-net" in
the body of a message to [EMAIL PROTECTED]
