[1033] in North American Network Operators' Group
Re: AS690 advisory update
daemon@ATHENA.MIT.EDU (Cengiz Alaettinoglu)
Wed Nov 15 14:11:39 1995
Date: Wed, 15 Nov 1995 11:04:14 -0800
From: Cengiz Alaettinoglu <cengiz@ISI.EDU>
To: Steve Heimlich <heimlich@ans.net>
Cc: Tony Bates <Tony.Bates@mci.net>, ser-rr@ser.bbnplanet.net, nanog@merit.edu,
rps@ISI.EDU
In-Reply-To: <199511150339.AA13343@interlock.ans.net>
Steve Heimlich (heimlich@ans.net) on November 14:
> <ramble begins>
>
> Some sort of scalable, easily maintainable advisory mechanism would
> be cool to have, but I haven't really thought about it too much.
> I'm certain that a tool could be written to do a search over the
> graph of ASes defined in all the registries, but we'd need to make
> sure that the registered information accurately reflected global
> AS topology. Using this tool once a day (or however often), you
> could get a view of the paths to any AS from your own point of view
> (e.g., from 3561 or 690 to anywhere). Almost like an administrative
> version of IDPR I suppose. The backend of that thing could munge
> your aut-num (or provide a nice list of suggestions).
>
> <ramble ends>
Steve,
Currently under development here at ISI is a tool that we call a
what-if database. It will enable one to change policies temporarily
(i.e. without actually registering in any database) and do analysis.
For example, you can change your as-in policies
to ANY and use prpath to find paths or prconn (currently being
developed) to find all the reachable destinations. The tools, when
interacting with the what-if database, may give you the delta of the
changes. Hence, the result of prconn may be the new address/prefixes
that are now reachable and were not before and vice versa.
Of course, for this tool to be useful, radb needs to be cleaned up of
bogus aut-num objects, and decent aut-num objects need to be
maintained by all (well most:-).
Do you think something like this covers what you want?
Cengiz
--
Cengiz Alaettinoglu Information Sciences Institute
(310) 822-1511 University of Southern California
http://www.isi.edu/div7/people/cengiz
