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[Apn] additional example about APN used in SDWAN environment

Linda Dunbar <linda.dunbar@futurewei.com> Thu, 11 March 2021 20:49 UTC

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From: Linda Dunbar <linda.dunbar@futurewei.com>
To: "apn@ietf.org" <apn@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: additional example about APN used in SDWAN environment
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Date: Thu, 11 Mar 2021 20:48:55 +0000
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Subject: [Apn] additional example about APN used in SDWAN environment
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Thanks to ShuPing for giving an excellent presentation on APN at RTGwg Session today.
Just want to follow up the comments I provided at the end of the session.
MEF SDWAN Service Specification project (MEF70.1) has specified "Virtual Topology" concept which refers to a virtual network over hybrid types of underlay paths (or tunnels).
Application aware segmentation refers to mapping specific applications to a specific "Virtual Topology".

Here are the APN relevant section from MEF70.1:

As an example, consider a retail subscriber with multiple stores. For a person-to-person messaging Application Flow across the company, a full mesh is useful, but the point-of-sale Application Flow in each store can only forward IP Packets to the POS controller, at the company data center.

[cid:image001.png@01D71685.6CC94470]

Figure 7 - Different Virtual Topologies in an SWVC

The Application Flows in this diagram experience two different forwarding behaviors in the same SD-WAN Service.

Best Regards,
Linda Dunbar

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