[mpls] Re: Poll: IOAM and PSD

[Rakesh Gandhi <[e-mail]>]

Hi Tony,



Regarding the first question, there are two methods available for In-situ
OAM: (1) Passport-based, and (2) Postcard -based.



   1. The passport-based IOAM allows on-path *recording* where each transit
   and/or endpoint node *records trace *data into the packets.
      1. IPPM WG has defined encodings for this method in RFC 9197,  namely:

*                                                  i.      **Pre-allocated
Trace Option-Type (value 0)*

                                                ii.      Incremental Trace
Option-Type (value 1)

                                              iii.      Proof-of-Transit
Option-Type (value 2)

                                              iv.      E2E Option-Type
(value 3)

   2. The postcard-based IOAM allows on-path *telemetry* where each transit
   and/or endpoint node *exports telemetry *data.
      1. IPPM WG has defined encodings for this method in RFC 9326
      <https://datatracker.ietf.org/doc/html/rfc9326>, namely *Direct-Export
      option-type (value 4).*



Based on my understanding, two IOAM option-types, namely, *Pre-allocated
Trace (value 0)* and *Direct-Export (value 4) *are popular.



Like to implement these two IOAM option-types in MNA that will enable
passport-based and postcard-based methods in MPLS networks.



Thanks,

Rakesh




On Tue, Jul 30, 2024 at 11:27 AM Tony Li <[e-mail]> wrote:

> [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?
>    2.
>
>    Do you have other applications of MNA that have not been proposed yet?
>
>
>
>  This poll will close in two weeks, at 9am PDT, Aug 13.
>
>
>
> Regards,
>
> MPLS chairs
>
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