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List: nanog
Subject: Re: NSPs and filters
From: Vadim Antonov <avg () pluris ! com>
Date: 1997-07-13 8:39:47
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randy@psg.com (Randy Bush) wrote:
>So, at POP X, I take in maybe 100 prefixes, with maybe 1000 at some POPs.
>How do I build and maintain that filter list, and how long does it take each
>packet to get through it with a router that also does real routing?
That can be done, and is relatively easy. Not in cisco's or any other
hardware-assisted box, though (figuring out why is left as an
excercise to the reader :)
My estimate is that the total filtering overhead is at about 2.5% for
a "software" router. And, yes, i do plan to implement that kind of
filtering.
--vadim
PS. Hint: i described the technique for doing that in a mailing
list, year ago.
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