Re: [Isis-wg] TLV conflict

Alia Atlas <akatlas@gmail.com> Thu, 14 December 2017 16:10 UTC

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From: Alia Atlas <akatlas@gmail.com>
Date: Thu, 14 Dec 2017 11:10:54 -0500
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To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
Cc: Harish R Prabhu <harish.r.prabhu@gmail.com>, "draft-ietf-isis-segment-routing-extensions@ietf.org" <draft-ietf-isis-segment-routing-extensions@ietf.org>, "isis-wg@ietf.org" <isis-wg@ietf.org>, "draft-ietf-isis-segment-routing-msd@ietf.org" <draft-ietf-isis-segment-routing-msd@ietf.org>
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Subject: Re: [Isis-wg] TLV conflict
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Hi Les,

On Thu, Dec 14, 2017 at 10:37 AM, Les Ginsberg (ginsberg) <
ginsberg@cisco.com> wrote:

> Folks –
>
>
>
>
>
> The conflict for SRMS Preference sub-TLV in https://tools.ietf.org/html/
> draft-ietf-isis-segment-routing-extensions-13#section-3.4 has already
> been noted and has been eliminated in the new version of the IS-IS SR draft
> which I expect to publish tomorrow. Note that although the IS-IS SR draft
> was given early allocation of some code points, a couple more sub-TLVs have
> been defined since then and these values have not yet been assigned by
> IANA. SRMS preference was one of them – though at the time of the writing
> of the version which added this the early allocation for MSD had not yet
> happened.
>

Fine - but this is the exact issue with having "suggested" values that
aren't allocated in drafts.
I am really not happy with such text.  I have been pushing and happy to
approve early allocations.


> Alia - I believe the MSD draft already is using the code points which have
> been assigned by early allocation – so I do not know what further update
> you believe is required in that document.
>
> ???
>

In the IANA section, it should refer to the values as allocated - not
suggested or potential.


>    Les
>
>
>
>
>
> *From:* Isis-wg [mailto:isis-wg-bounces@ietf.org] *On Behalf Of *Alia
> Atlas
> *Sent:* Thursday, December 14, 2017 7:01 AM
> *To:* Harish R Prabhu <harish.r.prabhu@gmail.com>
> *Cc:* draft-ietf-isis-segment-routing-extensions@ietf.org;
> isis-wg@ietf.org; draft-ietf-isis-segment-routing-msd@ietf.org
> *Subject:* Re: [Isis-wg] TLV conflict
>
>
>
> Hi Harish,
>
>
>
> Please take a look at
>
> https://www.iana.org/assignments/isis-tlv-codepoints/isis-tlv-
> codepoints.xhtml#isis-tlv-codepoints-242
>
> where it is clear that draft-ietf-isis-segment-routing-msd has an early
> temporary registration for type 23.
>
>
> draft-ietf-isis-segment-routing-msd-02 should be updated to clearly state
> the IANA allocations that have already happened.
>
>
>
> draft-ietf-isis-segment-routing-extensions-13 MUST be updated to clearly
> state the IANA allocations
> that have already happened for it (e.g. values 2 & 19) and to STOP
> SQUATTING on already allocated
> code-points.
>
>
>
> Thank you for bringing this to our attention!
>
>
>
> Regards,
>
> Alia
>
>
>
>
>
> On Thu, Dec 14, 2017 at 9:41 AM, Harish R Prabhu <
> harish.r.prabhu@gmail.com> wrote:
>
> While going through the I-Ds pertaining to SR attributes, it was found
> that the following 2 TLVs have been assigned the same Type number
>
> SRMS Preference Sub-TLV :
> https://tools.ietf.org/html/draft-ietf-isis-segment-
> routing-extensions-13#section-3.4
>
> Node MSD Advertisement :
> https://tools.ietf.org/html/draft-ietf-isis-segment-routing-msd-02#page-4
>
>  Both these sections talk about different sub tlvs under
> router_capabilities TLV, but type value assigned is 23 for both.
>
> Request to address this.
>
> Thanks,
> --
> Harish R Prabhu
> Bangalore, India.
> mailtp:harish.r.prabhu@gmail.com
>
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