Re: [vnfpool] FW: New Version Notification for draft-zong-vnfpool-problem-statement-02.txt

["Susan Hares" <[e-mail]>]

Ning, Linda, Melinda, and Diego:


This draft is very readable and addresses the issues we raised. The
clarification of terminology builds a clear workable set of definitions for
the Pool with its manager, users, and elements; and a set of VNFs.  

However, I find the definition of VNF Set to be a little fuzzy.  Is the VNF
set a particular instance doing a specific set of functions (load balancing,
spam filtering, etc.)?   How does the pool work with several instances?  

VNF set 1        
(load-balance, spam filter, admin 1)

VNF set 2        
(load balance-spam filter (admin 2))

VNF set 3
(spam filter) 

Are these three valid sets? 

The  following 6 problems are a good set of initial problems to work on.  

1. Cases of VNF failures
2. backup advertisement across VNF set.
3. State notification across VNF set
4. Service state synchronization
5. Complication of VNF placement 
6. How get Reliable transport.

Beyond the VNF Set definition, there is a continuum between the service
state synchronization and information transfer for VNF placement? 

Does anyone have experience with this continuum and like to talk about it? 

Sue Hares 


-----Original Message-----
From: vnfpool [mailto:[e-mail]] On Behalf Of Zongning
Sent: Monday, January 13, 2014 8:25 PM
To: [e-mail]
Subject: [vnfpool] FW: New Version Notification for
draft-zong-vnfpool-problem-statement-02.txt

Hi, folks,

Happy new year!

We made a new revision of VNF Pool Problem Statement. Please see the below
abstract and links:

Abstract:
   There is a trend to implement network services by using a group of
   Virtualized Network Functions (VNFs) called a VNF set.  A VNF set can
   offer benefits like flexible service provisioning.  A VNF set also
   introduces additional points of failure, and therefore poses
   additional challenges on reliability.

   This document overviews the problems related to the reliability of a
   VNF set.  A VNF pooling architecture is also briefly introduced as
   candidate solution to address the problems.

URL:
http://www.ietf.org/internet-drafts/draft-zong-vnfpool-problem-statement-02.
txt
Htmlized:
http://tools.ietf.org/html/draft-zong-vnfpool-problem-statement-02


Other related drafts including VNF Pool Use Cases, VNF Pooling Architecture
are under development and will be available soon in this month...

Thanks.

-Ning

> -----Original Message-----
> From: [e-mail] [mailto:[e-mail]]
> Sent: Tuesday, January 14, 2014 9:18 AM
> To: Zongning; Linda Dunbar; Melinda Shore; Linda Dunbar; Melinda 
> Shore; Diego Lopez; Diego R. Lopez; Zongning
> Subject: New Version Notification for
> draft-zong-vnfpool-problem-statement-02.txt
> 
> 
> A new version of I-D, draft-zong-vnfpool-problem-statement-02.txt
> has been successfully submitted by Ning Zong and posted to the IETF 
> repository.
> 
> Name:		draft-zong-vnfpool-problem-statement
> Revision:	02
> Title:		Virtualized Network Function (VNF) Pool Problem
Statement
> Document date:	2014-01-14
> Group:		Individual Submission
> Pages:		10
> URL:
>
http://www.ietf.org/internet-drafts/draft-zong-vnfpool-problem-statement-02.
> txt
> Status:
> https://datatracker.ietf.org/doc/draft-zong-vnfpool-problem-statement/
> Htmlized:
> http://tools.ietf.org/html/draft-zong-vnfpool-problem-statement-02
> Diff:
> http://www.ietf.org/rfcdiff?url2=draft-zong-vnfpool-problem-statement-
> 02
> 
> Abstract:
>    There is a trend to implement network services by using a group of
>    Virtualized Network Functions (VNFs) called a VNF set.  A VNF set can
>    offer benefits like flexible service provisioning.  A VNF set also
>    introduces additional points of failure, and therefore poses
>    additional challenges on reliability.
> 
>    This document overviews the problems related to the reliability of a
>    VNF set.  A VNF pooling architecture is also briefly introduced as
>    candidate solution to address the problems.
> 
> 
> 
> 
> Please note that it may take a couple of minutes from the time of 
> submission until the htmlized version and diff are available at
tools.ietf.org.
> 
> The IETF Secretariat

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