Oh, and I didn't mention that we have no legacy copper (yes, really) to the building. Anything other than the existing provider's fibre is a new install. The suggestion of fail-over to some kind of radio link has been raised with the boss and he's not totally agin the idea, but I need to investigate that further. On 8/11/2013 09:43, Tony Wicks wrote:
To be frank, with the limitations imposed around your physical access (no colo in a datacenter or use of "cloud") you are really not going to achieve much useful by complex PI routing of any sort. I would highly recommend you find a good business class ISP that can tailor a BGP failover solution (Fibre/VDSL?) to suit your physical assess limitations. This will be the most reliable and effective solution. If your boss wants full PI, then colo in a datacenter with real diversity and get an APNIC block. Don’t try and do a half pie hybrid that will make your service less reliable.
-- Matthew Poole "The difference between theory and practice is that practice is easier in theory than theory is in practice"