2011/6/7 Jimmy Hess <mysi...@gmail.com>: > (a) Costs of peering; both in terms of administrative overhead, > ports, circuits, cabinet space,...
The cost of peering on an IXP is roughly the same as setup fees for a new transit, and a BGP session to an IXP route server is not far from what will a full view cost in RAM and CPU on your edges. > (B) Loss of revenue due to peering. An extreme example is a very > large ISP peering > with a small ISP, to allow the small ISP to reach large ISP's customers. > The large ISP loses revenue, if they provide the peering for free, > since it would mean > the small ISP is not paying for that transit. Large ISPs do buy transit too. On a financial perspective, it can be considered as "outsourcing the peering function", with a paid SLA for this connectivity... > And once a customer, never a peer. Never peer with one of your peer's customer is one basic rule of peering agreements between tier-2 and 1 networks. It's a shame financial pragmatism makes the Internet less "meshy", and thus more fragile... -- Jérôme Nicolle
