i have an existing connection to the internet to ISP#1; i am adding another connection to ISP#2 for redundancy. i added a PIX515 firewall on the redundant link and configured that PIX as standby.
I intend to run BGP protocol on the routers.
It appeared that if the inbound traffic is going through ISP#2, it won't be able to reach the inside network since the PIX is on standby.
How does the inbound traffic knows which is the active link? do i need to tell the ISP which link is active? or i am totally missing something on the design here? Please advise.
attached is a diag.