[3403] in North American Network Operators' Group
Re: Ping flooding (fwd)
daemon@ATHENA.MIT.EDU (Daniel W. McRobb)
Tue Jul 9 21:27:56 1996
To: Per Gregers Bilse <bilse@EU.net>
cc: "Daniel W. McRobb" <dwm@ans.net>, nanog@merit.edu
In-reply-to: Message from <bilse@EU.net> of Wed Jul 10, 1996 2:58 EDT
<199607100058.AA00839@jotun.EU.net>
Date: Tue, 09 Jul 1996 21:23:01 EDT
From: "Daniel W. McRobb" <dwm@ans.net>
> > 'tis also very important to know the route taken for a net when
> > analyzing the data. Discrepancies here can be huge and completely
> > invalidate any conclusions you might make about how much traffic is
> > traversing a given path.
>
> For this we like combined interface stats; AS-based traffic matrices
> are (from our point of view) mostly useful for end-to-end measurements.
Forgot to answer this one point...
Combined interface stats aren't very useful for a scenario we commonly
entertain: what will happen if I move Big Customer A's ingress to ANSnet
from ANS border router X to ANS border router Y? I need to know who
they're talking to in order to answer that question. Typically large
portions of the ANS mesh will be affected, and I need to know how.
Daniel
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