Steve, In fact, it would be a serious error to assume that a large provider announces many routes. We advertise very few routes given our subscriber base - few than my last ISP, which had only a fraction of the customers. A scoring system is a bad idea because it penalizes and rewards based on criteria other than network behavior and good net citizenship. If we could buy and sell address space, with swamp blocks costing less than newer CIDR blocks, your system would work, because it could encourage a mix that would be advantagous (or not deleterious) to the net as a whole. Whoever, the typical small Tier II has little ot no choice about the blocks it gets. Whatever system that comes about in the regard must be fair for all sizes of provider. The solution is to allow all /24 and shorter prefixes in all address space. Given current router memory and CPU capability, this is within our means. I don't suggest de-aggregating these blocks, simply allowing advertisement and propigation. -------------------------------------------------------------- Daniel L. Golding * Senior Network Engineer Network Engineering * Mindspring Enterprises dgolding@mindspring.net * -------------------------------------------------------------- On Mon, 6 Dec 1999, Tim Wolfe wrote:
On Mon, 6 Dec 1999, Steve E. Powell wrote:
What if the operator had the capability to accept routes based on the ratio of good prefixes to bad prefixes received where a bad prefix is defined as a more specific of a classful network or a
So Provider A announces his ten /15 CIDR blocks to Provider B, aggregating huge numbers of IPs into those ten announcements. He then wishes to announce 20 "bad" prefixes from customers of /21 or longer. Under your plan, that doesn't fly. Why is it that we assume that a "large" provider has to be announcing many routes?
-- Tim
-------------------------------------------------- * Timothy M. Wolfe, Chief Network Engineer * * ClipperNet Corporation / It's a wireless world * * tim@clipper.net 800.338.2629 x 402 * * Sufficient for today = Inadequate for tomorrow * --------------------------------------------------