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Re: Traffic per Prefix Length
From: "Paul G. Donner" <pdonner () cisco com>
Date: Fri, 04 May 2001 13:52:51 -0600


There are many interesting pieces of data and there is plenty of data
in the Internet to collect. ;-)

might show how much work routers have to do in particular areas of the
table (which, granted, varies from location to location) when doing
longest-prefix match.  what areas of the table are hit more than others.

 "sh ip cef traffic prefix"




At 01:55 AM 5/4/2001 +0200, Arnold Nipper wrote:

On Thu, May 03, 2001 at 07:09:24PM -0600, Paul G. Donner wrote:
>
> does anyone collect stats that would facilitate the derivation of
> the number of packets forwarded per prefix length (per unit time)
> in the routing table or per prefix length range?  percentages would
> work too.
>

Interesting ... Do you think that this will give you any useful information?
I would be more interested in how far packets go. Not in networks terms but
in real distance. Next would be to go further up the stack and see if there
is a difference in protocols (i.e www compared to dns).

-- Arnold




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