Re: The Gorgon's Knot. Was: Re: Verio Peering Question
At 10:12 PM 9/28/2001 -0400, Sean Donelan wrote:
The global routing table is hereby capped at 125K routes. After that, if you want a route, you have to pay somebody to give up theirs.
Of course, we could adopt geographic allocations. North American is still working on (+1) in e.164 space. We could shrink the global route table to a few thousand routes.
There are many prefixes which are demonstrably useless in the global table (e.g. most of 7046). If you are really interested in reducing the size of the table, why not go after those? Instant gratification and all that. But I thought the problem is not *size* of the table, but *changes* in the table. With zero updates, a BGP table of double the current size would not bother any core router on the 'Net today. So, let's work on things like progressive flap dampening. I believe you suggested this before, Sean? -- TTFN, patrick
On Fri, 28 Sep 2001, Patrick W. Gilmore wrote:
But I thought the problem is not *size* of the table, but *changes* in the table. With zero updates, a BGP table of double the current size would not bother any core router on the 'Net today.
The global telephone table takes months to change, would that be slow enough? Do networks worldwide really need to know everytime a router in East Nowhere reboots?
So, let's work on things like progressive flap dampening. I believe you suggested this before, Sean?
Flap dampening measured by the symptom is fine. The more you flap, the more you are dampened. But as at least one group of academics found, the length of the prefix is not related to its propensity to flap. Proposing a /24 should be dampened for a longer period, for the same number of flaps, than a /8 is misguided.
participants (2)
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Patrick W. Gilmore -
Sean Donelan