Adrian,
Thanks for sharing this draft. This is a very good draft to summarize SDN for
carrier networks.
Two comments:
- 100% Agree with the draft on the emphasis of PDP (Policy Decision Point) and
PEP (Policy enforcement Point) components of SDN. why does the draft emphasize
that "SDN approach should be global, network-wide"? Here are a couple of
examples that SDN is not global based:
1) The wireless' PCRF (Policy and Charging rules function) and PCEF (Policy
Charging Enforcement Function) are good examples of SDN. However, PCRF and PCEF
only control the access segments, not global network.
2) In data center, centralized controller(s), with the information passed from
VM management system, can define (virtual) networks to interconnect Virtual
machines. This network is local to Data Center, not necessarily global based.
- We all understand the challenges of "Full Automation". However, the SDN and
Full automation are two separate angles to Carrier networks. I find the Section
4.1 "Implications of full automation" actually de-rails the focus of the draft
on SDN.
My two cents.
Linda
-----Original Message-----
From: sdn-bounces(_at_)irtf(_dot_)org
[mailto:sdn-bounces(_at_)irtf(_dot_)org] On Behalf Of
Adrian Farrel
Sent: Monday, October 07, 2013 1:49 PM
To: sdn(_at_)irtf(_dot_)org
Subject: [Sdn] FW: Last Call: <draft-sin-sdnrg-sdn-approach-04.txt>
(Software-Defined Networking: A Perspective From Within A Service
Provider) to Informational RFC
Heads up!
This document which was discussed from time-to-time in the SDNRG is
going for
IETF last call as an AD-sponsored independent submission.
Review comments are welcome as always. Please follow the instructions
in the
email below.
Thanks,
Adrian
-----Original Message-----
From: ietf-announce-bounces(_at_)ietf(_dot_)org [mailto:ietf-announce-
bounces(_at_)ietf(_dot_)org] On Behalf Of The IESG
Sent: 07 October 2013 19:40
To: IETF-Announce
Subject: Last Call: <draft-sin-sdnrg-sdn-approach-04.txt> (Software-
Defined
Networking: A Perspective From Within A Service Provider) to
Informational RFC
The IESG has received a request from an individual submitter to
consider
the following document:
- 'Software-Defined Networking: A Perspective From Within A Service
Provider'
<draft-sin-sdnrg-sdn-approach-04.txt> as Informational RFC
The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to
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Abstract
Software-Defined Networking (SDN) has been one of the major buzz
words of the networking industry for the past couple of years.
And
yet, no clear definition of what SDN actually covers has been
broadly
admitted so far. This document aims at contributing to the
clarification of the SDN landscape by providing a perspective on
requirements, issues and other considerations about SDN, as seen
from
within a service provider environment.
It is not meant to endlessly discuss what SDN truly means, but
rather
to suggest a functional taxonomy of the techniques that can be
used
under a SDN umbrella and to elaborate on the various pending
issues
the combined activation of such techniques inevitably raises. As
such, a definition of SDN is only mentioned for the sake of
clarification.
The file can be obtained via
http://datatracker.ietf.org/doc/draft-sin-sdnrg-sdn-approach/
IESG discussion can be tracked via
http://datatracker.ietf.org/doc/draft-sin-sdnrg-sdn-approach/ballot/
No IPR declarations have been submitted directly on this I-D.
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