Sorry, this is not a FreeBSD specific question but I figured there are knowledgeable people here who might be able to help!
See the above set up. The border gateway needs to switch over to the slower secondary public connection if the faster primary connection fails. Any existing connections will break at the time of switch over but that is ok. This is for a friend who is not tech savvy so it has to be something that just works once set up. Is anyone aware of a turnkey or commercial router that can do this? Thanks!
Code:
private
ip net (192.168.x.0/24)
. +---------+
| | border +--- public ip to isp1 (fast connection)
+---+ gateway |
| | +--- public ip to isp2 (slow connection)
. +---------+