On 2011-04-09, Paul Suh <paul....@ps-enable.com> wrote:
> Folks,
>
> I've been looking at the pf FAQ and there are instructions for symmetric load
> balancing for outgoing traffic. Is there a way to do *asymmetric* load
> balancing? E.g., I have a 20 Mbps FIOS line and a 6 Mbps ADSL line. I'd like
> to either (A) send all outgoing traffic up to 20 Mbps through the FIOS link,
> then send any overflow to the ADSL line, or (B) set the pf load balancing so
> that it favors the FIOS link over the ADSL link by a 10:3 ratio.
>
> Is there a pf config that does this, or do I need to get hacking?
It's not perfect but you can list entries in route-to multiple times:
route-to {(em0 1.1.1.1), (em0 1.1.1.1), (em0 1.1.1.1), (em1 1.1.2.1)}
Note that it's per-session not per-packet so you will end up with
things like some downloads being restricted to 6Mb/s. Alternatively you
could split things up by protocol and e.g. use the high-capacity line for
http/ftp and the lower-capacity one for ssh/smtp/voip.
