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Re: [ippm] WG Last Call for draft-ietf-ippm-ioam-ipv6-options

Haoyu Song <haoyu.song@futurewei.com> Wed, 29 December 2021 21:29 UTC

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From: Haoyu Song <haoyu.song@futurewei.com>
To: Marcus Ihlar <marcus.ihlar=40ericsson.com@dmarc.ietf.org>, "ippm@ietf.org" <ippm@ietf.org>
CC: 6man <ipv6@ietf.org>
Thread-Topic: WG Last Call for draft-ietf-ippm-ioam-ipv6-options
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Date: Wed, 29 Dec 2021 21:29:46 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ippm/1EBLEm-EUqCC52uOlphbMhETlPs>
Subject: Re: [ippm] WG Last Call for draft-ietf-ippm-ioam-ipv6-options
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Hi IPPM and 6MAN,

After reading the draft, I have one question. My understanding is that the proposed approach basically uses IP-in-IP encapsulation and encapsulates the IOAM option in the outer IPv6 header. While the in-band measurement is intended for the inner IPv6 packet, I'm concerned on how the requirement C1 can be met. For example, I'm not sure how the forwarding and ECMP can behave identically with and without the outer IPv6 header (i.e., for the overlay and underlay networks).

Thanks,
Haoyu

From: ippm <ippm-bounces@ietf.org> On Behalf Of Marcus Ihlar
Sent: Friday, December 17, 2021 7:39 AM
To: ippm@ietf.org
Subject: [ippm] WG Last Call for draft-ietf-ippm-ioam-ipv6-options

Hello IPPM,
This email starts a Working Group Last Call on draft-ietf-ippm-ioam-ipv6-options.

https://datatracker.ietf.org/doc/draft-ietf-ippm-ioam-ipv6-options/<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-ietf-ippm-ioam-ipv6-options%2F&data=04%7C01%7Chaoyu.song%40futurewei.com%7C8895882824fd43c501e508d9c1736d28%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637753523788355875%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=WJ1EZAPGbexogIV4J4pQR69%2F7Gh0%2FiVMn3lyWORJAic%3D&reserved=0>
https://datatracker.ietf.org/doc/html/draft-ietf-ippm-ioam-ipv6-options-06<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-ietf-ippm-ioam-ipv6-options-06&data=04%7C01%7Chaoyu.song%40futurewei.com%7C8895882824fd43c501e508d9c1736d28%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637753523788355875%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=YrK0mXHkK2thhO29ogOryETZZifwDR%2BE8VS%2FXV3%2FmA4%3D&reserved=0>

Please provide feedback by replying to this email with your reviews and if you think this document is ready to progress, by Friday, January 14.

Best Regards,
Marcus & Tommy

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