Re: [Apn] why it is necessary to differentiate the security concern for 5G Vertical Networks from the grand Internet ( was RE: Application-Aware Networking (APN) focused interim

Linda Dunbar <ldunbar@futurewei.com> Mon, 07 June 2021 14:56 UTC

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From: Linda Dunbar <ldunbar@futurewei.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>, "rtgwg@ietf.org" <rtgwg@ietf.org>, "apn@ietf.org" <apn@ietf.org>
Thread-Topic: [Apn] why it is necessary to differentiate the security concern for 5G Vertical Networks from the grand Internet ( was RE: Application-Aware Networking (APN) focused interim
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Archived-At: <https://mailarchive.ietf.org/arch/msg/apn/pZGzsWxnEdhbNmXA61P5kKG2fK0>
Subject: Re: [Apn] why it is necessary to differentiate the security concern for 5G Vertical Networks from the grand Internet ( was RE: Application-Aware Networking (APN) focused interim
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Michael, 

Closed Loop Networks still have nodes from different vendors, like UPFs can be from vendor A and B, routers connecting the edge servers to UPFs can be from Vendor X/Y/Z. 
Therefore,  Closed Loop Networks still need standardization. E.g. IETF DETNET is used for closed loop networks. 

If using RSVP+Diffserv, extension is needed to represent finer grade of services. I assume that APN is meant to address those extensions. 
The draft-peng-apn-scope-gap-analysis has more detailed analysis. 

Linda Dunbar

-----Original Message-----
From: Michael Richardson <mcr+ietf@sandelman.ca> 
Sent: Saturday, June 5, 2021 12:41 PM
To: Linda Dunbar <ldunbar@futurewei.com>om>; rtgwg@ietf.org; apn@ietf.org
Subject: Re: [Apn] why it is necessary to differentiate the security concern for 5G Vertical Networks from the grand Internet ( was RE: Application-Aware Networking (APN) focused interim


Linda Dunbar <ldunbar@futurewei.com> wrote:
    > I meant to say that APN is useful in those "Closed Loop Networks",
    > which are becoming more common for the 5G enabled special services.

So what parts of the Close Loop Network needs standards work?

    > The "end user" or services that need APN are the one who have special
    > contracts with the operators. Not all services.

I'm rather convinced that you could use RSVP+Diffserv (aka "diffedge") to do this then.  diffedge did not, AFAIK, ever make it out of ID.
     https://www.ietf.org/archive/id/draft-bernet-diffedge-01.txt

While Joel mentioned many things that made "Intserv" (just RSVP) undeployable in the Internet, it was deployable within Enterprises, and there are now 20+ years of improvements to forwarding plane and control plane CPUs.
Given that you have a closed environment, it seems like diffedge + SDN ought to do what you want.

--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide