Re: [Lsr] Éric Vyncke's No Objection on draft-ietf-ospf-te-link-attr-reuse-13: (with COMMENT)

"Eric Vyncke (evyncke)" <evyncke@cisco.com> Mon, 08 June 2020 13:07 UTC

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From: "Eric Vyncke (evyncke)" <evyncke@cisco.com>
To: "Peter Psenak (ppsenak)" <ppsenak@cisco.com>, The IESG <iesg@ietf.org>
CC: "draft-ietf-ospf-te-link-attr-reuse@ietf.org" <draft-ietf-ospf-te-link-attr-reuse@ietf.org>, "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>, "Acee Lindem (acee)" <acee@cisco.com>, Yingzhen Qu <yingzhen.qu@futurewei.com>, "aretana.ietf@gmail.com" <aretana.ietf@gmail.com>
Thread-Topic: Éric Vyncke's No Objection on draft-ietf-ospf-te-link-attr-reuse-13: (with COMMENT)
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Date: Mon, 08 Jun 2020 13:07:16 +0000
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Subject: Re: [Lsr] Éric Vyncke's No Objection on draft-ietf-ospf-te-link-attr-reuse-13: (with COMMENT)
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Thank you Peter for your reply

-éric

-----Original Message-----
From: Peter Psenak <ppsenak@cisco.com>
Date: Sunday, 7 June 2020 at 21:29
To: Eric Vyncke <evyncke@cisco.com>, The IESG <iesg@ietf.org>
Cc: "draft-ietf-ospf-te-link-attr-reuse@ietf.org" <draft-ietf-ospf-te-link-attr-reuse@ietf.org>, "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>, "Acee Lindem (acee)" <acee@cisco.com>, Yingzhen Qu <yingzhen.qu@futurewei.com>, "aretana.ietf@gmail.com" <aretana.ietf@gmail.com>
Subject: Re: Éric Vyncke's No Objection on draft-ietf-ospf-te-link-attr-reuse-13: (with COMMENT)

    Hi Eric,

    On 07/06/2020 17:21, Éric Vyncke via Datatracker wrote:
    > Éric Vyncke has entered the following ballot position for
    > draft-ietf-ospf-te-link-attr-reuse-13: No Objection
    > 
    > When responding, please keep the subject line intact and reply to all
    > email addresses included in the To and CC lines. (Feel free to cut this
    > introductory paragraph, however.)
    > 
    > 
    > Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
    > for more information about IESG DISCUSS and COMMENT positions.
    > 
    > 
    > The document, along with other ballot positions, can be found here:
    > https://datatracker.ietf.org/doc/draft-ietf-ospf-te-link-attr-reuse/
    > 
    > 
    > 
    > ----------------------------------------------------------------------
    > COMMENT:
    > ----------------------------------------------------------------------
    > 
    > Thank you for the work put into this document. I have a single non-blocking
    > COMMENT (question):
    > 
    > In section 5, if the SABM and UDABM lengths are either 0, 4 or 8, then I wonder
    > why the "SABM Length" and "UDABM Length" fields are 8 bits. In control plane,
    > using 2 or 3 bits length would not have a performance impact and would allow
    > for a longer Reserved header field.

    We did not limit the size at the beginning, but later due to limited
    size of ISIS TLVs we limited it to 8 bytes to leave some space for the
    attributes itself (draft-ietf-isis-te-app). We wanted to keep the
    consistency between ISIS and OSPF which also helps BGP-LS. 8 octets
    should be future-proof enough (64 apps).

    We keep the byte for the SABM and UDABM lengths to avoid problems of 
    existing implementation.

    thanks,
    Peter


    > 
    > I hope that this helps to improve the document,
    > 
    > Regards,
    > 
    > -éric
    > 
    > 
    > 
    > 
    >

[Lsr] Éric Vyncke's No Objection on draft-ietf-os… Éric Vyncke via Datatracker
Re: [Lsr] Éric Vyncke's No Objection on draft-iet… Peter Psenak
Re: [Lsr] Éric Vyncke's No Objection on draft-iet… Eric Vyncke (evyncke)