[AusNOG] AAPT Ethernet outage

[Luke Iggleden]

> 
> If your customers are super sensitive to outages, they should have redundancy - either of their own or have you install a second tail from as diverse a path as you can muster into their sites.  Offering this to customers and then having them refuse the added cost of the redundancy MAY be a good way of diffusing potential situations in the future.  All systems/networks have their moments, no matter who runs them.

Here Here. 

Selling your customers a solution and promising it won't go down when it's a single path is suicide. Of course they want you to explain if you have undersold them something. Never promise anything you can't guarantee.

It's still possible that two, three, four providers will go down at the same time. Not many carriers tell you what path your traffic is heading over and if they do, it's easy for the techs to duplicate a service on the same physical path. Having more than 1 carefully chosen though will significantly help in a situation like this.