Re: [mpls] [spring] Updates to draft-gandhi-spring-ioam-sr-mpls

"Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com> Fri, 24 May 2019 19:30 UTC

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From: "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>
To: Loa Andersson <loa@pi.nu>, "spring@ietf.org" <spring@ietf.org>, "ippm@ietf.org" <ippm@ietf.org>
CC: "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: [spring] Updates to draft-gandhi-spring-ioam-sr-mpls
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Date: Fri, 24 May 2019 19:30:28 +0000
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Subject: Re: [mpls] [spring] Updates to draft-gandhi-spring-ioam-sr-mpls
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Hi Loa,

Thank you for the review comments. Please see inline with <RG>...

On 2019-05-22, 2:40 AM, "Loa Andersson" <loa@pi.nu> wrote:

    
    Rakesh,
    
    A couple of thoughts and questions.
    
    - is it necessary to have three different ways to establish the
       IOAM Indicator Label?

<RG> There are three options possible, but after some discussions with the WGs, we can pick one or more.

    - if it is necessary to use a Special Purpose Label, could you use
       a eSPL instead of a bSPL (for terminology see draft-andersson-mpls-
       spl-terminology)?

<RG> We can use eSL (e.g. label value 18).

    - will the label serving as as IOAM Indicator always be a the bottom
       of the stack and have the s-bit set?

<RG> That may be easier, need to see if there is any complication that can come with it though.

    - allocating SPL's is a decision that I would want the MPLS working
       group to take, this could be done in one of two ways, either we
       progress in the mpls wg or you split out the IANA allocation in a
       separate document and progress that in the mpls wg.

<RG> Ok. At this time, we can keep both WGs in the loop with one document.

Thanks,
Rakesh

    
    /Loa
    
    On 2019-05-22 06:49, Rakesh Gandhi (rgandhi) wrote:
    > Hi WG,
    > 
    > We have published an update to the following draft:
    > 
    > https://datatracker.ietf.org/doc/draft-gandhi-spring-ioam-sr-mpls/
    > 
    > /draft-gandhi-spring-ioam-sr-mpls/ defines how IOAM data fields are 
    > transported with SR-MPLS encapsulation. The draft has been updated as 
    > following://
    > 
    >  1. Add different methods of IOAM Indicator Label in Section 4.1.
    >  2. Add Hashing function in Section 4.2.
    >  3. Add Node capability in Section 4.3.
    >  4. Cleanup/editorial changes
    > 
    > Welcome your review comments and suggestions.
    > 
    > Thanks,
    > 
    > Rakesh (on behalf of co-authors and contributors)
    > 
    > 
    > _______________________________________________
    > spring mailing list
    > spring@ietf.org
    > https://www.ietf.org/mailman/listinfo/spring
    > 
    
    -- 
    
    
    Loa Andersson                        email: loa@pi.nu
    Senior MPLS Expert
    Bronze Dragon Consulting             phone: +46 739 81 21 64