Multiple default routes

[Vantage255]

I have a BD 6808. It is set up with multiple BGP peers. I am looking for a way to set up all of my default routes on the unit so that each machine plugged into one of the net ports can get to its default routes. I have over 40 default routes in my network and many of the indevidual servers are present in mutiple netblocks and need to have access to these routes. How can I set this up WITHOUT 802.1q ???