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[mpls] Comments on draft-gandhi-spring-ioam-sr-mpls

Tarek Saad <tsaad.net@gmail.com> Sun, 17 November 2019 16:20 UTC

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From: Tarek Saad <tsaad.net@gmail.com>
To: "draft-gandhi-spring-ioam-sr-mpls@ietf.org" <draft-gandhi-spring-ioam-sr-mpls@ietf.org>
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Subject: [mpls] Comments on draft-gandhi-spring-ioam-sr-mpls
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Hi authors,

Having read through this draft, I have the following comments:


  1.  Is it possible that more than one IOAM encapsulating node tries to insert IOAM header into same packet – e.g. consider hierarchical MPLS LSP(s).. If so, how to handle multiple encapsulating node(s) trying to add IOAM option/data after end of MPLS label stack? If not possible (or not supported), it’d be good to explicitly state this
  2.  It is not clear what Figure 3 is serving in section 4?

Regards,
Tarek

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