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[ippm] about draft-zhou-ippm-enhanced-alternate-marking-03.txt

Haoyu Song <haoyu.song@futurewei.com> Thu, 17 October 2019 19:24 UTC

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From: Haoyu Song <haoyu.song@futurewei.com>
To: "'ippm@ietf.org'" <ippm@ietf.org>, "'draft-zhou-ippm-enhanced-alternate-marking.authors@ietf.org'" <draft-zhou-ippm-enhanced-alternate-marking.authors@ietf.org>
Thread-Topic: about draft-zhou-ippm-enhanced-alternate-marking-03.txt
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Date: Thu, 17 Oct 2019 19:24:04 +0000
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Subject: [ippm] about draft-zhou-ippm-enhanced-alternate-marking-03.txt
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(resent cause the original email didn't go through)

Hi Tianran and authors，

This draft provides a light-weighted solution to support both alternate marking and PBT-M at the same time. Given the use cases of alternate marking have been well established, I believe this enhanced proposal will support more interesting and powerful use cases and address a different set of in-band measurement problems from IOAM.

However, even the proposed data fields are short, the encapsulation requirement is the same as that for IOAM (note that the original PBT-M only needs to borrow a single existing header bit). Any thoughts on this?

The collisions of flow ID, even if the probability is low, can cause measurement errors. How can you avoid it?

Thanks!
Haoyu

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