Re: [Apn] [Int-area] APN presentation @INTAREA

Hi Bob, 

Please also look at the second FAQ. 

"QoE is complex and has many impacting factors including the terminal, access, and network. APN aims to provide ways to improve the QoE within the network." 

Thank you! 

Best regards, 
Shuping 

> -----Original Message-----
> From: Bob Hinden [mailto:bob.hinden@gmail.com]
> Sent: Friday, March 12, 2021 11:49 PM
> To: Pengshuping (Peng Shuping) <pengshuping@huawei.com>
> Cc: Bob Hinden <bob.hinden@gmail.com>; int-area@ietf.org; apn@ietf.org
> Subject: Re: [Int-area] APN presentation @INTAREA
> 
> Hi Shuping,
> 
> > On Mar 12, 2021, at 7:34 AM, Pengshuping (Peng Shuping)
> <pengshuping@huawei.com> wrote:
> >
> > Hi Folks,
> >
> > Please find below the FAQs I listed in the slides but did not get time to
> present. Your comments and feedback are very much welcomed. Thank you!
> >
> > You can also find the slides here. There are also some information for your
> references at the end of the slides.
> >
> https://datatracker.ietf.org/meeting/110/materials/slides-110-intarea-appli
> cation-aware-networking-apn-02
> >
> > 1. Are there any applications that can benefit from APN?
> > I would like to ask how many of us have experienced the Meetecho issues
> in this IETF and the virtual ones before. This is one of the applications that
> can benefit from APN. :)
> 
> In your int area presentation, I think you said that APN was for limited
> domains.  There was a bullet that said:
> 
>      APN works within a limited trusted domain.
> 
> How would that then apply to Meetecho?  Meetecho needs to work across
> the whole Internet.
> 
> Bob
> 
> 
> >
> > In this IETF, we had a hackathon "Application-aware G-SRv6 networking",
> which shows the improvements that can be achieved with APN, using which
> the traffic is steered into the appropriate SRv6 path [1]. The results are going
> to be presented and demonstrated in the INFOCOM2021. There was also the
> first demonstration of APN in the INFOCOM2020 [2].
> >
> >
> [1]https://github.com/APN-Community/IETF-110-Hackathon-Demo/blob/m
> aster/Application-aware_G-SRv6_networking__Demo_and_Test.pdf
> > [2]https://ieeexplore.ieee.org/abstract/document/9162934
> >
> > 2. How APN can help resolve the QoE issues?
> > As shown in the APN demonstrations, we can see the
> differences/improvements which APN can make in the network. QoE is
> complex and has many impacting factors including the terminal, access, and
> network. APN aims to provide ways to improve the QoE within the network.
> >
> > 3. Who is to set the APN attribute?
> > It is the network edge device such as CPE (Customer Premises Equipment)
> not the application.
> >
> > 4. How to set the APN attribute?
> > There are many possible ways that can be used to classify the traffic flow
> at the network edge, e.g., the N-tuples as defined in the MEF70 and the AI
> technologies. An APN attribute can be derived by using the match items
> published in MEF70 as well as the access port in the edge device.
> >
> > 5. How the APN attribute is used in the network?
> > The APN attribute is carried in the data packet's header, and it can be used
> in the various nodes/service functions along the network path to enforce the
> policies on the differentiated traffic flow, e.g.,
> > 1) at the headend to steer into corresponding path satisfying SLAs
> > 2) at the midpoint to collect corresponding performance measurement
> data
> > 3) at the service function to execute particular policies
> >
> > Best regards,
> > Shuping
> >
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