advertising virtual IP's over BGP ? is that possible

Typically this would be done (or at least, how I've done it in our environment) by adding blackhole routes for your vip's (or ideally, subnet allocated for vip's). Basically, the idea is to get the routes into your route table where they are then available to redistribute to bgp, and then to bgp neighbors. AFAIK, there is not a magical "redistribute VIP's to bgp" option.

To redistribute the static routes into bgp, you'll need to:

config router bgp

config redistribute static

set status enable

<optional> set route-map '<xyz>'

end

end

The route map is optional - just depends on what you want to do when you push static routes into bgp for redistribution.

This will get the routes available to redistribute via bgp - normal bgp route maps and peering configuration applies.