Some of you know I took on a new job earlier this year, where the challenge was (and is) to transform a globally distributed network for a growing company into an enterprise class operation. A major focus area has been eliminating single points of failure (SPOFs): single links, single routers, single firewalls, etc. If it can break and consequently interrupt traffic flow, part of my job is to design around the SPOF within the constraints of a finite budget.