Re: [tsvwg] A New Draft Uploaded (draft-qiang-tsvwg-udp-options-bounded-latency-00)

["qiangli (D)" <[e-mail]>]

Hi Tom,

I fully agree with you, Hop-by-hop option is an effective way to work in IPv6 scenario, we are also going to work on it, and UDP option is another way. As vendor, we do care about processing performance, and we also value UDP option as a potential way for end-user to express their requirement directly to network, some evaluation test is needed.


Best regards,

Cristina QIANG

-----Original Message-----
From: Tom Herbert [mailto:[e-mail]] 
Sent: Saturday, March 09, 2019 12:03 AM
To: qiangli (D) <[e-mail]>
Cc: tsvwg <[e-mail]>; Toerless Eckert <[e-mail]>
Subject: Re: [tsvwg] A New Draft Uploaded (draft-qiang-tsvwg-udp-options-bounded-latency-00)

On Thu, Mar 7, 2019 at 5:22 PM qiangli (D) <[e-mail]> wrote:
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> Hi All,
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> We have uploaded a new draft (draft-qiang-tsvwg-udp-options-bounded-latency-00) that explores the use of UDP options for bounded latency forwarding. Review and comment is highly appreciated.
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Hi Cristina,

One comment.

From the draft: "However in an IP data plane, there is no enough space in the IP common header."

This is what extension headers are designed for. The draft is describing what should be a new Hop-by-Hop option.

Also, I don't think router vendors are going to be very happy if they have to start parsing packet trailers in the high performance data path.

Tom


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> Best regards,
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> Cristina QIANG
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> ==============================================
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> A new version of I-D, 
> draft-qiang-tsvwg-udp-options-bounded-latency-00.txt
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> has been successfully submitted by Li Qiang and posted to the IETF repository.
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> Name:               draft-qiang-tsvwg-udp-options-bounded-latency
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> Revision:  00
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> Title:                  UDP Options for Bounded Latency
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> Document date:       2019-03-08
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> Group:               Individual Submission
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> Pages:               9
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> URL:            https://www.ietf.org/internet-drafts/draft-qiang-tsvwg-udp-options-bounded-latency-00.txt
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> Status:         https://datatracker.ietf.org/doc/draft-qiang-tsvwg-udp-options-bounded-latency/
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> Htmlized:       https://tools.ietf.org/html/draft-qiang-tsvwg-udp-options-bounded-latency-00
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> Htmlized:       https://datatracker.ietf.org/doc/html/draft-qiang-tsvwg-udp-options-bounded-latency
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> Abstract:
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>    This document explores the use of UDP options for packet forwarding
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>    with bounded latency.
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> Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org.
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> The IETF Secretariat
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