Quote:
Originally Posted by qasdfdsaq
Unfortunately I see that as part of the problem, as it's much quicker to add public peering capacity than new private peerings when dealing with unexpected traffic increases.
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It is but then causes issues as far as how you actually get all that traffic robustly and resiliently to that public peering point.
Comcast, etc, run the same model for pretty good reasons. VM could ram all 4Tb/s through London but not a good idea. It may be quicker but it's unwise, far better to try and get traffic off your network as soon as is feasible.
It's a different equation for Sky as the heritage of their network is the old Easynet network and a massively fibre dense ring in London and for xDSL ISPs as they can centralise IP traffic and use BT Wholesale as a transport network but for networks like Virgin's where customer traffic is clear IP very close to the customer makes sense to have a bunch of exit points.