Travis writes: <Snipped description of problems related to single-circuit customer prems>
I think the first problem is that conventional wisdom tells the customer that they have to buy a circuit to two different SPs in order to get real fault tolerance. I haven't seen a whole lot of aggressive marketing about pulling two circuits into two edge boxes, using two different pieces of CPE or one fault-tolerant one. The industry isn't pushing the idea that you can have redundant service from a single provider. (grain of salt: one of our providers sold us a backup transit DS3 for the cost of the local loop)
I'm at a multi-POP network in Boston. We've had great luck selling customers a Verizon circuit into one of our POPs and a Worldcom circuit into a different one. It costs more, but they don't have nearly the exposure of a single circuit customer. However, if you're not set up to do this, the appropriate level of paranoia calls for circuits to two different providers. Maybe if SPs really addressed availability requirements of their customers, it wouldn't be such an issue.
-travis
Thanks for your message. I agree that many redundancy issues can be solved by taking circuits from different L2 providers into two different POPs of the same IP provider. Some problems (like catastrophic business failure of the IP provider) are not solved by this approach, though, and customers see those points of failure as well or better than the technical failures that you describe. Part of the reason for the customer's perception relates to your point about the industry not pushing the idea that you can get redundant service from a single provider. In fact, there are large sales forces out there pushing the opposite idea: that you must get redundancy and you must do it by having a second provider. My experience is that once a customer has anything like reasonable connectivity, it is difficult to replace the existing provider because the hassle factor and downtime are just too great a cost for an incremental improvement or savings. For the salesperson, the right way to make the sale then is not to try to sell someone a replacement; instead, she or he sells them the service as an enhancement. For many companies out there, in other words, offering to enable a customer to multi-home may be their only shot at getting any business from that customer. We all remember I'm not speaking for my employer, right? thanks, Ted Hardie