This is only a problem if you use so called tier 1 transit providers. The smaller fish in the pond have multiple transits themselves and will there by always have an alternative route available. Regards Baldur Den 01/06/2015 22.32 skrev "William Herrin" <bill@herrin.us>:
On Mon, Jun 1, 2015 at 2:40 PM, Blake Hudson <blake@ispn.net> wrote:
A gateway of last resort, also called a backup default route, will take care of partitions
No, Blake, it won't. A partition means one of your ISPs has no route to the destination. Route the packet to that ISP via a default route and it gets sent to /dev/null. More, during a partition you don't get to pick which of your ISPs lack the route.
Regards, Bill Herrin
-- William Herrin ................ herrin@dirtside.com bill@herrin.us Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>