Great Circle Associates Network-Automation
(April 2005)
 

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Subject: Re: available network automation tools
From: Daniel Hagerty <hag @ linnaean . org>
Date: Tue, 12 Apr 2005 11:17:12 -0400
To: Kirby Files <ksfiles @ gmail . com>
Cc: Brent Chapman <Brent @ GreatCircle . COM>,Aaron Glenn <aaron . glenn @ gmail . com>,network-automation @ greatcircle . com
In-reply-to: <425BE409.6030206@gmail.com>
References: <Pine.GSO.4.33.0504081252130.26766-100000@darksun.binsh.com><42573546.7050503@gmail.com><18f60194050409174575ada600@mail.gmail.com><42593FE4.7030901@gmail.com><p0621021fbe80b5cb0c76@[66.92.48.19]><425BD965.5020306@gmail.com><16987.57280.24606.129390@perdition.linnaean.org><425BE409.6030206@gmail.com>
Reply-to: Daniel Hagerty <hag @ linnaean . org>

 > It is only a semantic problem if you're looking for a

    You miss my point, but I'm sure I spoke it poorly.

 > one-size-fits-all universal taxonomy of networking. I believe in a
 > system with a small set of primitives with well-defined semantics,
 > which can be used to define a network model of anything from an X.25
 > financial system to a Tier1 backbone provider, to a heterogeneous mesh
 > network.
 >
 > In my use of it here, a "type", or "element type" is a grouping of
 > elements that share common attributes, functions, and similar roles in
 > the network hierarchy. We have "types" that include "interface",
 > "card", "connection" (sub-typed by vlan, lsp, etc.), and even
 > higher-level constructs of "qos policy" and "edge router".
 >
 > Each of these types has well-defined semantics (interfaces can be
 > connected to one or more interfaces via connnections; cards can be
 > interchanged in slots, etc.) that are true despite vendor or model
 > differences.

    That you can do this is not in question; I'm aware of the
tractability of the approach.

    What is this ontology in which you define your new types within,
and how does it limit you?


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