Re: [Casm] I-D Action: draft-kumar-casm-requirements-and-framework-00.txt

Brian E Carpenter <brian.e.carpenter@gmail.com> Wed, 08 February 2017 03:40 UTC

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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Wed, 8 Feb 2017 16:40:31 +1300
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Subject: Re: [Casm] I-D Action: draft-kumar-casm-requirements-and-framework-00.txt
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Hi,

> This document describes evolution of IPAM into a
> standardized interfaces for centralized management of IP addresses.

> CASM:   Centralized Address Space Management

Please delete 'centralized'. It isn't necessary (as mentioned in my
previous message) and it has the effect of limiting the range of
solutions that can be considered. I will consider the document as
if this word does not appear...

And in fact I like the draft. I simply observe that this part of the model:

        +---+------------+-------+-------+---------------+------+
        |    Address Space Management (IPAM) System             |
        |      +-----------+ +----------+ +--------+            |
        |      | Pool      | |Address   | |Database|            |
        |      | Management| |Management| |        |            |
        |      +-----------+ +----------+ +--------+            |
        |                                                       |
        +-------------------------+-----------------------------+

*does not need to be centralized* except for two points: providing
the initial pool to the distributed system, and providing policy
intent to the distributed system.

And there's a draft describing a distributed solution, for a subset
of the problem space:
https://tools.ietf.org/html/draft-ietf-anima-prefix-management-02
I understand that it's too soon for this list to discuss solutions,
but I really do want the distributed approach to be on the table, since
this is one of the early use cases for the Anima WG.

Regards
   Brian Carpenter