Re: [sunset4] FW: draft-li-behave-NAT444-Test and draft-tsou-stateless-nat44

> -----Original Message-----
> From: sunset4-bounces@ietf.org [mailto:sunset4-bounces@ietf.org] On
> Behalf Of George, Wes
> Sent: Wednesday, July 11, 2012 7:24 AM
> To: sunset4@ietf.org
> Subject: [sunset4] FW: draft-li-behave-NAT444-Test and draft-tsou-
> stateless-nat44
> 
> The answers to our questions on two drafts are below. Please review and
> comment on the content of the answers, either together or separately.
> I'd like some discussion on the draft or the questions on-list before
> we get into the meeting.

See below.

> Thanks
> 
> Wes George
> 
> 
> -----Original Message-----
> From: Will Liu (Shucheng) [mailto:liushucheng@huawei.com]
> Sent: Wednesday, July 11, 2012 5:42 AM
> To: George, Wes
> Cc: sunset4-chairs@tools.ietf.org
> Subject: Asking for two 10min slots
> 
> Hi George,
> 
> Thanks for your kindly reminding. Sorry for my carelessness. :D May I
> ask for 2 time slots for draft-Li-Behave-NAT444-Test-00 and draft-tsou-
> stateless-nat44？Each presentation would last for 10min and the
> presenter will be Will Liu.
> 
> Following are my answers to your three question for both drafts:
> Q:
> 1) describe the problem to be solved and show that there is widespread
> demand for a solution
> 2) demonstrate that the problem can not be solved with existing
> technologies
> 3) provide a description of the proposed solution along with its impact
> on current IPv4-only use and justification that it does not harm or
> delay the deployment of IPv6
> 
> A:
> draft-Li-Behave-NAT444-Test-00
> 1) NAT444 is a common scenario in operators’ network.  Operators are
> worried whether applications will be affected when they pass though
> multi-level NAT. This test document provides experiences for both
> operators and researchers.
> 2) During testing, we find some problems such as QQ online Gaming
> doesn’t permit two user with the same public IP address in same game
> room.

Other applications have a similar restriction.  For example, Mohamed
has done extensive testing with BitTorrent and described the precise
slowdowns and the precise failures when two users are sharing the 
same IPv4 address, draft-boucadair-pcp-bittorrent.

Cablelabs published results of some of their testing using a 
different mix of applications.  I have previously raised 
objections to their testing methodology and results.  Their 
document is draft-donley-nat444-impacts.

> 3) This is a testing draft. Proposed solution is not related.
> 
> draft-tsou-stateless-nat44-00
> 1)  To let the NAT44 CGN simple, to reduce the cost of CGN. Different
> from traditional NAT44: no per-session state on the CGN, no binding
> table, no per-flow state to be maintained, zero log, high speed, easy
> to deploy hot backup.
> 2)  Traditional NAT44 CGN need per-session state on the CGN, binding
> table, per-flow state to be maintained. These make the CGN expensive
> and difficult to achieve CGN hot backup.
> 3)  Solve the exhaustion of IPv4 address when the network migrate to
> IPv6. Because it is stateless, the ISPs don’t need too much cost to
> deploy it. 

This seems to be a MAP solution.  But differs from MAP in that it uses
an IPv4 network between the subscriber and the ISP's "stateless NAT44"
device, whereas MAP uses an IPv6 network between the subscriber and 
the ISP's "MAP border relay" device.

> It can also be implemented in dual-stack network(IPv4
> traffic pass through stateless NAT44 and IPv6 traffic pass by stateless
> NAT44), so the network can migrate to IPv6 smoothly.

Typo in that sentence?

-d

> Regards,
> Will
> 
> 
> -----Original Message-----
> From: George, Wes [mailto:wesley.george@twcable.com]
> Sent: Wednesday, July 11, 2012 12:48 PM
> To: Will Liu (Shucheng); sunset4-chairs@tools.ietf.org
> Subject: RE: Asking for a 10min slot
> 
> Please see the message I sent to the list this AM.
> 
> Thanks,
> 
> Wes
> 
> > -----Original Message-----
> > From: Will Liu (Shucheng) [mailto:liushucheng@huawei.com]
> > Sent: Tuesday, July 10, 2012 5:30 AM
> > To: sunset4-chairs@tools.ietf.org
> > Subject: Asking for a 10min slot
> >
> > Hi Chairs,
> >
> > I am writing to ask for a 10 min slot for a presentation for
> > draft-tsou- stateless-nat44.
> > Presenter name is Will Liu and length of presentation is 10 minutes.
> > Thanks.
> >
> > Have a nice day!
> > Will
> 
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