On Tue, Jul 1, 2008 at 5:06 PM, Alastair Johnson <aj@sneep.net> wrote:
Whether MetroE costs a little or a lot, many people are
placing high *value* on it - and part of that value should be around
"how do we make sure it works as close to all the time as possible".

I think this may have been alluded before on this thread, but people only value a network when there are end user hosts/devices connected to it. This means that having a shared fate with the customer device (wrt power) is not only adequate, but possibly even desirable.

One possible solution:
If your customer has a major switching node using -48V dual power feed battery and diesel system, plug your CE into that (make sure you sales team asks first though!).
If your customer has a single PC plugged into your service, plug in your CE device to the same 4-port power strip they're using.

This way, when you get a power outage they say "Oh no, my switching node is down, damn power company", not "Oh no, the network is down, damn MetroE provider" even though the network is actually down as well. The other end of the fibre is your problem and the SLA should be used to define how much power reliability you need there.

The situation you don't want is for power to be down and affecting your CE and not the end customer device. As descibed above UPS-type solution is not the only way to ensure this.