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Re: [Apn] should add the gap analysis for GENEVE (RFC8926)

Linda Dunbar <linda.dunbar@futurewei.com> Fri, 19 March 2021 15:48 UTC

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From: Linda Dunbar <linda.dunbar@futurewei.com>
To: "Pengshuping (Peng Shuping)" <pengshuping@huawei.com>, "draft-peng-apn-scope-gap-analysis@ietf.org" <draft-peng-apn-scope-gap-analysis@ietf.org>, "apn@ietf.org" <apn@ietf.org>
Thread-Topic: should add the gap analysis for GENEVE (RFC8926)
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Date: Fri, 19 Mar 2021 15:48:19 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/apn/rBRkSI2v-QvE-1tL0hxTZuYdgV0>
Subject: Re: [Apn] should add the gap analysis for GENEVE (RFC8926)
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ShuPing,

When you say "needs to be developed", do you mean mapping the APN-ID and APN-Associated-Parameters into the GENEVE TLV?

For example, the App-AWARE ID from the draft-li-6man-app-aware-ipv6-network-02 can be specified as a Sub-TLV to GENEVE header.
[cid:image003.png@01D71CAD.5EF28130]

Linda

From: Pengshuping (Peng Shuping) <pengshuping@huawei.com>
Sent: Friday, March 19, 2021 3:24 AM
To: Linda Dunbar <linda.dunbar@futurewei.com>; draft-peng-apn-scope-gap-analysis@ietf.org; apn@ietf.org
Subject: RE: should add the gap analysis for GENEVE (RFC8926)

Hi Linda,

Thank you!

GENEVE can be taken into account when carrying the APN attribute. The encapsulation with it seems more to be a solution that needs to be developed rather than a gap analysis to be added. How do you think?

Best regards,
Shuping

From: Linda Dunbar [mailto:linda.dunbar@futurewei.com]
Sent: Friday, March 19, 2021 7:56 AM
To: draft-peng-apn-scope-gap-analysis@ietf.org<mailto:draft-peng-apn-scope-gap-analysis@ietf.org>; apn@ietf.org<mailto:apn@ietf.org>
Subject: should add the gap analysis for GENEVE (RFC8926)

Shuping, et al,

I think that the draft-peng-apn-scope-gap-analysis should add the gap analysis for GENEVE (RFC8926).

GENEVE has been used very widely among Cloud networks. For example, you can have a GENEVE encapsulated flows to Firewalls. You can attach App related Meta data to the GENEVE header, so that the nodes along the way can do the needed processing.



Geneve Header:
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |Ver|  Opt Len  |O|C|    Rsvd.  |          Protocol Type        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |        Virtual Network Identifier (VNI)       |    Reserved   |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                                                               |
      ~                    Variable-Length Options                    ~
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

If there are reasons that GENEVE can't be used, it is better to document those reasons in the Gap analysis.

Linda Dunbar

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