Re: New Version Notification for draft-matsushima-stateless-uplane-vepc-00.txt

Hi Jouni

Thanks for comments. 

Our proposal keeps the control plane untouched. All the signalling and functions stay same in U-Plane.
However If the information is carried in GTP-U header, the information is missed in our system.  
Can you point out what kind of data is that? The pointer to 3GPP specification is helpful too?
For the tasks in EPC-E, we don't have particular solution at this moment, but we are expecting some solution from network service chaining. I heard there will be a bog at the coming IETF. 

regards,
ryuji



On Jul 10, 2013, at 11:48 PM, Jouni Korhonen <[email protected]> wrote:

> 
> Thanks for winding up a good old discussion on this specific GTP
> topic. I have not yet read the I-D in a close detail but I have
> some initial questions - so there might be some gaps in my
> understanding of the I-D. Previously when similar architectures
> were exercised the question of backward compatibility always came
> up. One of the sticking points was the established practices to use
> of GTP-U header extensions to carry subscriber specific data within
> the core (i.e. between SGW/SGSN and PGW/GGSN). Have you thought 
> of this? Another question/note I have is that now quite a bit of
> tasks that used to belong to PGW/GGSN are now assigned to EPC-E
> (like policy control). Has this been seen as an issue?
> 
> - Jouni
> 
> 
> 
> 
> On Jul 10, 2013, at 7:12 PM, Ryuji Wakikawa <[email protected]> wrote:
> 
>> Hi 
>> 
>> We submit a new document.  Your comments are appreciated! 
>> 
>> thanks,
>> ryuji
>> 
>> 
>> Begin forwarded message:
>> 
>>> From: [email protected]
>>> Subject: New Version Notification for draft-matsushima-stateless-uplane-vepc-00.txt
>>> Date: July 10, 2013 9:09:44 AM PDT
>>> To: Ryuji Wakikawa <[email protected]>, Satoru Matsushima <[email protected]>
>>> 
>>> 
>>> A new version of I-D, draft-matsushima-stateless-uplane-vepc-00.txt
>>> has been successfully submitted by Satoru Matsushima and posted to the
>>> IETF repository.
>>> 
>>> Filename:	 draft-matsushima-stateless-uplane-vepc
>>> Revision:	 00
>>> Title:		 Stateless user-plane architecture for virtualized EPC (vEPC)
>>> Creation date:	 2013-07-10
>>> Group:		 Individual Submission
>>> Number of pages: 19
>>> URL:             http://www.ietf.org/internet-drafts/draft-matsushima-stateless-uplane-vepc-00.txt
>>> Status:          http://datatracker.ietf.org/doc/draft-matsushima-stateless-uplane-vepc
>>> Htmlized:        http://tools.ietf.org/html/draft-matsushima-stateless-uplane-vepc-00
>>> 
>>> 
>>> Abstract:
>>> We envision a new mobile architecture for the future Evolved Packet
>>> Core (EPC).  The new architecture is designed to support the
>>> virtualization scheme called NFV (Network Function Virtualization).
>>> In our architecture, the user plane of EPC is decoupled from the
>>> control-plane and uses routing information to forward packets of
>>> mobile nodes.  Although the EPC control plane will run on hypervisor,
>>> our proposal does not modify the signaling of the EPC control plane.
>>> The benefits of our architecture are 1) scalability, 2) flexibility
>>> and 3) Manageability.  How to run the EPC control plane on NFV is out
>>> of our focus in this document.
>>> 
>>> 
>>> 
>>> 
>>> The IETF Secretariat
>>> 
>> 
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>