I have Internet connection to an ISP who assigned PA IP addresses in which some of the IP addresses is used in hosting Microsoft Exchange in house. We wish to add another ISP who will assigned another block of its own PA IP addresses. We wish to use the second ISP as backup but we want our Exchange Server to be operational irrespective of the ISP that is active. We don't want to implement BGP now because(It will take me time to get AS from AFRINIC, and to purchase a router that I intend to use as BGP router). We want to connect to the two ISP using static route also. What can we do to achieve our immediate goals.
I have this problem too.