[mpls] Re: Working Group Last Call on draft-ietf-mpls-mna-hdr

[Tianran Zhou <[e-mail]>]

OK. So I made a quick design on the new format, call it format C’, different from format C.
This format is still a container, which can be used for AD.
[cid:image001.png@01DAB7E8.A6D0FA20]

GL(group length) indicates the number of LSEs in this group.

So it works for all the combination usages:

A+B+C’
A+B+C’+D
A+B+C’+C
A+B+C’+C+D
A+B+C’+C+C
A+B+C’+C+C+D
A+B+C’+C+C’+C
…




From: John Drake [mailto:[e-mail]]
Sent: Wednesday, June 5, 2024 9:48 PM
To: [e-mail] <je_drake=[e-mail]>; Tianran Zhou <[e-mail]>
Cc: Tarek Saad <[e-mail]>; [e-mail]; MPLS Working Chairs <[e-mail]>; [e-mail]; Zhukeyi(Kaiyin,Datacom Standard&Patent) <[e-mail]>
Subject: Re: [mpls] Re: Working Group Last Call on draft-ietf-mpls-mna-hdr

The point is that each type C LSE contains 32 bits, of which 19 bits are dedicated to ancillary data.  If they are not carrying ancillary data they are unused but still transmitted.  So, unless they are re-purposed, your proposal doesn't buy anything.

On Wednesday, June 5, 2024 at 05:28:41 AM PDT, Tianran Zhou <[e-mail]<mailto:[e-mail]>> wrote:


I do not really understand your question. Could you please give me more information?

Let me try to answer. Type c can have data. What l want to do is to reduce the redundant information when there are more than one actions.

Tianran



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抄送： John Drake<[e-mail]<mailto:[e-mail]>>;Tarek Saad<[e-mail]<mailto:[e-mail]>>;[e-mail]<mailto:[e-mail]>;MPLS Working Chairs<[e-mail]<mailto:[e-mail]>>;[e-mail]<mailto:[e-mail]>;Zhukeyi(Kaiyin,Datacom Standard&Patent)<[e-mail]<mailto:[e-mail]>>
主题： Re: [mpls] Re: Working Group Last Call on draft-ietf-mpls-mna-hdr
时间： 2024-06-05 00:30:48

You didn’t answer my question

Sent from my iPhone


On Jun 4, 2024, at 12:08 PM, Tianran Zhou <zhoutianran=[e-mail]<mailto:zhoutianran=[e-mail]>> wrote:

Hi John,

One packet may need multiple actions/opcodes.
The group format will indicate several actions can share the same metadata.

Tianran

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发件人： John Drake<je_drake=[e-mail]<mailto:je_drake=[e-mail]>>
收件人： Tarek Saad<[e-mail]<mailto:[e-mail]>>;[e-mail]<mailto:[e-mail]>;Tianran Zhou<[e-mail]<mailto:[e-mail]>>
抄送： MPLS Working Chairs<[e-mail]<mailto:[e-mail]>>;[e-mail]<mailto:[e-mail]>;Zhukeyi(Kaiyin,Datacom Standard&Patent)<[e-mail]<mailto:[e-mail]>>
主题： Re: [mpls] Re: Working Group Last Call on draft-ietf-mpls-mna-hdr
时间： 2024-06-04 21:36:51

So, for what are the post opcode bits in each of the subsequent format C LSEs used?

On Monday, June 3, 2024 at 08:40:12 PM PDT, Tianran Zhou <zhoutianran=[e-mail]<mailto:zhoutianran=[e-mail]>> wrote:



Hi WG and Authors,



This draft proposed the 4 LSE formats with sequence: A-B-C-D.

I want to propose a new LSE format. Let’s call it C’ temporarily.

C’ is a kind of group, which can group several C formats.

So the sequence is A-B-C’-C-D.



This format can reduce the redundancy of several LSEs.

For example, if several LSEs have the same flow id, we can just put this flow id at the beginning of the group. And all the following LSEs in this group can use.



Best,

Tianran



From: Tarek Saad [mailto:[e-mail]]
Sent: Tuesday, June 4, 2024 10:50 AM
To: [e-mail]<mailto:[e-mail]>
Cc: MPLS Working Chairs <[e-mail]<mailto:[e-mail]>>; [e-mail]<mailto:[e-mail]>
Subject: [mpls] Working Group Last Call on draft-ietf-mpls-mna-hdr



Dear WG,



This email starts a two-week Working Group last call for draft-ietf-mpls-mna-hdr<https://datatracker.ietf.org/doc/draft-ietf-mpls-mna-hdr/>.



Please indicate your support or concern for this draft. If you are opposed to the progression of the draft to RFC, please articulate your concern. If you support it, please indicate that you have read the latest version, and it is ready for publication in your opinion. As always, review comments and nits are most welcome.



Please send your comments to the mpls WG mailing list ([e-mail]<mailto:[e-mail]>).

If necessary, comments may be sent unidirectional to the WG chairs.



Note, currently there are 5 IPR disclosures against this document at https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-ietf-mpls-mna-hdr



This poll runs until June 18, 2024.



Thank you,

Tarek (for the MPLS WG co-chairs)
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