Re: [mpls] Codepoint for OSPFv3 protocol in SPRING LSP-Ping and LSP-Trace

"Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com> Wed, 11 September 2019 12:18 UTC

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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: "Aissaoui, Mustapha (Nokia - CA/Ottawa)" <mustapha.aissaoui@nokia.com>, "Ketan Talaulikar (ketant)" <ketant@cisco.com>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>, "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-mpls-spring-lsp-ping@ietf.org" <draft-ietf-mpls-spring-lsp-ping@ietf.org>
CC: "spring@ietf.org" <spring@ietf.org>
Thread-Topic: Codepoint for OSPFv3 protocol in SPRING LSP-Ping and LSP-Trace
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Date: Wed, 11 Sep 2019 12:18:28 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/A-qbHP61TzT17xSNRZNWzHPEuYw>
Subject: Re: [mpls] Codepoint for OSPFv3 protocol in SPRING LSP-Ping and LSP-Trace
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Hi Ketan/Mustapha,

During the time of this RFC development, we used OSPF as codepoint for both v2 and v3.

I think a separate code point for OSPFv3 would be more cleaner.

Thanks,
Nagendra

From: "Aissaoui, Mustapha (Nokia - CA/Ottawa)" <mustapha.aissaoui@nokia.com>;
Date: Wednesday, September 11, 2019 at 2:31 AM
To: "Ketan Talaulikar (ketant)" <ketant@cisco.com>;, "bruno.decraene@orange.com"; <bruno.decraene@orange.com>;, "mpls@ietf.org"; <mpls@ietf.org>;, "draft-ietf-mpls-spring-lsp-ping@ietf.org"; <draft-ietf-mpls-spring-lsp-ping@ietf.org>;
Cc: "spring@ietf.org"; <spring@ietf.org>;
Subject: RE: Codepoint for OSPFv3 protocol in SPRING LSP-Ping and LSP-Trace
Resent-From: <alias-bounces@ietf.org>;
Resent-To: Nagendra Kumar <naikumar@cisco.com>;, <cpignata@cisco.com>;, <swallow.ietf@gmail.com>;, <nobo.akiya.dev@gmail.com>;, <sriganeshkini@gmail.com>;, <mach.chen@huawei.com>;
Resent-Date: Wednesday, September 11, 2019 at 2:31 AM

Thank you Ketan.

I believe it would be appropriate to have a separate codepoint for each OSPFv2 and OSPFv3 protocols. Within OSPFv3 we can distinguish the family IPv4 and IPv6 based on the prefix of the SID.

Mustapha.

From: Ketan Talaulikar (ketant) <ketant@cisco.com>;
Sent: Wednesday, September 11, 2019 12:21 AM
To: bruno.decraene@orange.com; Aissaoui, Mustapha (Nokia - CA/Ottawa) <mustapha.aissaoui@nokia.com>;; mpls@ietf.org; draft-ietf-mpls-spring-lsp-ping@ietf.org
Cc: spring@ietf.org
Subject: RE: Codepoint for OSPFv3 protocol in SPRING LSP-Ping and LSP-Trace

Hi Mustapha,

The RFC8287 refers to OSPF and not OSPFv2. Conventionally, we use the term OSPF when we are referring to both OSPFv2 and OSPFv3. I am not sure if this was the authors’ objective.

One might assume that OSPFv2 is purely for IPv4 and OSPFv3 for IPv6, but this is not true (see RFC5838).

I would it is better to have two separate code-points for OSPFv2 and OSPFv3 in this case.

Thanks,
Ketan

From: mpls <mpls-bounces@ietf.org<mailto:mpls-bounces@ietf.org>> On Behalf Of bruno.decraene@orange.com<mailto:bruno.decraene@orange.com>
Sent: 09 September 2019 18:23
To: Aissaoui, Mustapha (Nokia - CA/Ottawa) <mustapha.aissaoui@nokia.com<mailto:mustapha.aissaoui@nokia.com>>; mpls@ietf.org<mailto:mpls@ietf.org>; draft-ietf-mpls-spring-lsp-ping@ietf.org<mailto:draft-ietf-mpls-spring-lsp-ping@ietf.org>
Cc: spring@ietf.org<mailto:spring@ietf.org>
Subject: Re: [mpls] Codepoint for OSPFv3 protocol in SPRING LSP-Ping and LSP-Trace

RFC 8287 is a product of the MPLS WG so in the absence of answer on the SPRING mailing list, I’m redirecting the question to the MPLS WG.

--Bruno

From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Aissaoui, Mustapha (Nokia - CA/Ottawa)
Sent: Friday, August 2, 2019 12:29 AM
To: spring@ietf.org<mailto:spring@ietf.org>
Subject: [spring] Codepoint for OSPFv3 protocol in SPRING LSP-Ping and LSP-Trace

Dear all,
I am not sure if this was discussed during the development of RFC 8287 – “Label Switched Path (LSP) Ping/Traceroute for Segment Routing (SR) IGP-Prefix and IGP-Adjacency Segment Identifiers (SIDs)                         with MPLS Data Planes”, but I could not find anything in the SPRING mail archive.

Prefix SID and adjacency SID which are originated in an OSPFv3 instance (IPv4 or IPv6 instance) do not have a protocol ID assigned to them in the Segment ID Sub-TLV, as well as in the Label Stack Sub-TLV of the Downstream Detailed Mapping TLV.

Should we assign the next available IANA codepoint values or was there a rationale for omitting them?

Regards,
Mustapha.

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