[mpls] on MIAD ADI requirement draft RE: Agenda for the MPLS Open DT 2021-10-14

[Haoyu Song <[e-mail]>]

Hi Matthew and Stewart,

Thank you for publishing the draft! This is a great start for further discussion. Below are some of my questions after a quick review. Thanks!


  1.  "Neither an ADI or ancilliary data must be delivered to a node that is not capable of processing it."
I guess this sentence means "An ADI or ancillary data must not be ...". If so, what does the "node" mean? If it can be a network node (e.g., P router), I think it's possible for it to be unaware of the ADI/AD but still can forward the packet. Any clarification here?


  1.  "The mechanism to indicate that Ancilliary Data is present MUST operate in the context of the top of stack LSE."
Do you mean the ADI must be top of stack label?


  1.  "ADIs can only be inserted at LERs, ..."
Do we formally decide that we'll never allow an LSR to initiate or terminate a network function/AD? If so, what makes we believe this must be limited to LER?


  1.  " A solition must be provided to verify the authenticity of  ancillary data processed to LSRs. "
Do you mean "solution .... processed by"? Not sure we need this to be a "must", otherwise this may create unbearable burden to the system.


  1.  "The design of the ADIs and ancillary data must not expose confidential information to the LSRs."
What are considered "confidential information"? Any example or definition? I think this needs to be clarified.


Best regards,
Haoyu

From: mpls <[e-mail]> On Behalf Of Bocci, Matthew (Nokia - GB)
Sent: Thursday, October 14, 2021 5:45 AM
To: Loa Andersson <[e-mail]>; [e-mail]
Cc: [e-mail]; [e-mail]; DetNet Chairs <[e-mail]>
Subject: Re: [mpls] Agenda for the MPLS Open DT 2021-10-14

Loa

I have posted a first draft for the MIAD requirements here.

draft-bocci-mpls-miad-adi-requirements-00 - Requirements for MPLS Label Stack Indicators for Ancillary Data (ietf.org)<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-bocci-mpls-miad-adi-requirements%2F&data=04%7C01%7Chaoyu.song%40futurewei.com%7Cb6c20ceda8734c7bb4ca08d98f108617%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637698123407271600%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=GinuVkgLbjoz0M7rulzo4C%2BvPRMpP8yERqhQ6EeI8R8%3D&reserved=0>

Maybe we can take a look during the Requirements slot on the Open DT agenda.

Matthew

From: mpls <[e-mail]<mailto:[e-mail]>> on behalf of Loa Andersson <[e-mail]<mailto:[e-mail]>>
Date: Wednesday, 13 October 2021 at 10:12
To: [e-mail]<mailto:[e-mail]> <[e-mail]<mailto:[e-mail]>>
Cc: [e-mail]<mailto:[e-mail]> <[e-mail]<mailto:[e-mail]>>, [e-mail]<mailto:[e-mail]> <[e-mail]<mailto:[e-mail]>>, DetNet Chairs <[e-mail]<mailto:[e-mail]>>
Subject: [mpls] Agenda for the MPLS Open DT 2021-10-14
MPLS Open DT,

I have posted the agenda for tomorrow:

https://trac.ietf.org/trac/mpls/wiki/2021-10-14-agenda<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftrac.ietf.org%2Ftrac%2Fmpls%2Fwiki%2F2021-10-14-agenda&data=04%7C01%7Chaoyu.song%40futurewei.com%7Cb6c20ceda8734c7bb4ca08d98f108617%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C1%7C637698123407271600%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=ZigZ8bL%2BhJhcnxx2VFTk6ym7YsZ%2BGkRNizELJdCGtrM%3D&reserved=0>

/Loa


--

Loa Andersson                        email: [e-mail]<mailto:[e-mail]>
Senior MPLS Expert                          [e-mail]<mailto:[e-mail]>
Bronze Dragon Consulting             phone: [phone]

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