From: ITguy on
> > how can i fall back to the slower one
> > (100mbit/s) only if the faster one (1000mbit/s)
> > fails?
>
> Put them both in the same IPMP group and mark the slower one standby.
>
> Note that I'm not sure that mixing speeds in an IPMP group is supported.

It is. You can use IPMP on just about anything where you can plumb an
IP address