[mpls] Re: Poll: IOAM and PSD

[Haoyu Song <[e-mail]>]

Yes. The BOS bit in the label field changes a lot of things. 

Haoyu

-----Original Message-----
From: Loa Andersson <[e-mail]> 
Sent: Sunday, August 11, 2024 8:26 PM
To: Haoyu Song <[e-mail]>; Tony Li <[e-mail]>; mpls <[e-mail]>
Subject: Re: [mpls] Re: Poll: IOAM and PSD

Haoyu,

do you mean that since specification of IOAM-DEX (RFC 9326) following
RFC9197 specifies

- IOAM-Trace-Types of 24 bit flag fields And Optional Fields - Flow ID
32 bits - Sequence Number 32 bits And draft-mb-mpls-ioam-dex specifies - IOAM Trace Types of 22 flag bits And optional fields - Flow ID 30 bits - sequence number 11 bits (variable) That draft-mb-mpls-ioam-dex is strictly not compatible with RFC 9326? /Loa Den 09/08/2024 kl. 07:35, skrev Haoyu Song:
>
> Hi Tony,
>
>
>
> My response is inline.
>
>
> Regards,
>
> Haoyu
>
> *From:* Tony Li <[e-mail]> *On Behalf Of *Tony Li
> *Sent:* Tuesday, July 30, 2024 8:26 AM
> *To:* mpls <[e-mail]>
> *Subject:* [mpls] Poll: IOAM and PSD
>
> [WG chair hat: on]
>
> Hi all,
>
> We’ve had many discussions about IOAM and PSD over the last few years. 
> We need to reach consensus on the problems that need to be addressed 
> in these areas. Therefore, we would like to hear from everyone, 
> especially independent operators:
>
>  1. There are many flavors of IOAM.  Which ones would you like to
>     deploy/implement with MNA?
>
> [HS] I’d like MNA to support IOAM DEX and Trace option as specified in
> RFC9326 and RFC9197 using PSD. The reasons are:
>
>      1. Comply with existing standards, can be directly used without
>         any hassle
>      2. Support potential cross-domain interoperation (e.g., cross the
>         boundary of MPLS domain and non-MPLS domain)
>      3. IOAM trace (i.e., the passport mode) is very useful in many
>         realtime measurement/congestion control applications (e.g.,
>         HPCC and tons of published research papers), therefore it has
>         great potential for future wider application.
>
>  2. Do you have other applications of MNA that have not been proposed yet?
>
> [HS] I’d like to see a simple flag-based action to support the 
> postcard mode telemetry.
>
> I’d like also see the support of application level ID and metadata to 
> better support the application-aware networking.
>
>  This poll will close in two weeks, at 9am PDT, Aug 13.
>
> Regards,
>
> MPLS chairs
>
>
>
>
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--
Loa Andersson
Senior MPLS Expert
Bronze Dragon Consulting
[e-mail]
[e-mail]