Multiple gateways support

[Baginski Darren]

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?

Thank you!