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Re: [spring] https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-04#page-24

Gyan Mishra <hayabusagsm@gmail.com> Mon, 14 October 2019 04:47 UTC

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From: Gyan Mishra <hayabusagsm@gmail.com>
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Date: Mon, 14 Oct 2019 00:47:20 -0400
Cc: SPRING WG List <spring@ietf.org>, Srihari Sangli <ssangli@juniper.net>, Shraddha Hegde <shraddha@juniper.net>
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To: Rajesh M <mrajesh=40juniper.net@dmarc.ietf.org>
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Subject: Re: [spring] https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-04#page-24
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Rajesh

I believe that is how it’s written but want to confirm that with SRv6 we added the PSP to mirror mpls and SR-MPLS PHP and added USP to mirror mpls and UHP penultimate and ultimate hop pop that occurs either the default behavior on the egress P or USP on the egress PE FEC destination.  

Thanks 

Gyan

Sent from my iPhone

> On Oct 10, 2019, at 9:46 PM, Rajesh M <mrajesh=40juniper.net@dmarc.ietf.org> wrote:
> 
> Wanted to know the use case where we only POP the SRH ?
> 4.16.1.  PSP: Penultimate Segment Pop of the SRH
> 
>    The SRH processing of the End, End.X and End.T behaviors are
>    modified: after the instruction "S14.  Update IPv6 DA with Segment
>    List[Segments Left]" is executed, the following instructions must be
>    executed as well:
>  
>    S14.1.   If (updated SL == 0) {
>    S14.2.      Pop the SRH
>    S14.3.   }
>  
> 
> Juniper Business Use Only
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