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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Verio Peering Question
On Fri, 28 Sep 2001, Jeff Mcadams wrote: > Since the length of the prefix bears little correlation to the > "importance" of the network being advertised, there is little reason to > filter based on the length of the prefix. In addition to that, the prefix filtering mechanisms that are being discussed don't apply at all to providers who are allocated much larger blocks (/16+) yet feel the need to slice and dice it into individual /20's to steer traffic. Can someone who is in favor of implementing filters explain to me why slicing a /16 into 16 /20's is any different than slicing a /20 into 16 /24's? If the thought is "you're given a /20, i only want to see a /20.." then why doesn't "you're given a /18, I only want to see a /18" also apply? I don't have any hard evidence to know how much of an impact this actually has, but I would be very interested to see how many more specific /19's and /20's exist in a "verio-filtered" table that were allocated as /16's and shorter. Paul
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