Re: [Anima] Autonomic Control Plane Based on IPv4 draft

Hi, Brian

	I think I can understand your opinion. 
	However, the statement of "This requires no work or decision by the network operators" is just an ideal assumption, or design principle. 
	At one aspect, it can not be always achieved; at the other aspect, it does not mean the network operator can not make decision in an autonomic network.

	I think in a long time, Autonomic Network is just used to ease the work of an network operator, and not to replace all the human network operators.
	We can not assume in any time, the Autonomic network can make a better decision than human, especially in the very beginning.

	I understand that IPv4 is not as suitable as IPv6 for an ACP. I just want to make the gaps clear in this time.

Best Regards
Zongpeng Du

-----Original Message-----
From: Anima [mailto:anima-bounces@ietf.org] On Behalf Of Brian E Carpenter
Sent: Friday, July 24, 2015 1:04 AM
To: Michael Richardson; anima
Subject: Re: [Anima] Autonomic Control Plane Based on IPv4 draft - 00

On 24/07/2015 04:47, Michael Richardson wrote:
> 
> Duzongpeng <duzongpeng@huawei.com> wrote:
>     > Its purpose is to describe an IPv4 ACP, which is helpful for the
>     > deployment of ACP when the IPv6 has not replace all IPv4.
> 
> I simply don't understand; and I wonder if you understand what the ACP is.
> 
> This is all new code and new (virtual) wires.  I don't see what the 
> state of
> IPv4 matters.  Maybe this is part of the Data-Plane ACP "confusion".
> 
> I am very much opposed to this document, and I want to suggest that we 
> make it out of scope in our charter.

I would argue it a bit differently. The IPv6-based ACP will create itself automatically, simply because all autonomic nodes will contain the code that knows how to do this (IPv6 stack, SLAAC, the IPv6 routing protocol, and some sort of ACP-creating engine to drive it all). This requires no work or decision by the network operators. So the question of whether IPv6 is already deployed in the network is totally irrelevant - the ACP simply doesn't care. Also the operators don't need to care what protocol the ACP is running. Actually it could be running ISO/OSI Connectionless Network Protocol or Novell Netware - it simply doesn't matter outside the ACP.
But we have chosen IPv6 because it has useful properties that IPv4 lacks.

   Brian

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