Re: [tcpm] New version for draft-ietf-tcpm-yang-tcp Fri, 17 June 2022 13:14 UTC

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To: "Scharf, Michael" <>, "" <>
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Thread-Topic: New version for draft-ietf-tcpm-yang-tcp
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Date: Fri, 17 Jun 2022 13:14:05 +0000
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Subject: Re: [tcpm] New version for draft-ietf-tcpm-yang-tcp
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Hi Michael, 

I have one minor comment: 

              The value
              should be unknown (0) if connection initiations
              to all local IP addresses are accepted.";

              The value
              should be unspecified (0) if connection initiations
              to all local IP addresses are accepted.";

(there is another occurrence of "unknown (0)" that should be fixed as well)

Thank you.


> -----Message d'origine-----
> De : tcpm <> De la part de Scharf, Michael
> Envoyé : vendredi 17 juin 2022 11:46
> À :
> Cc :
> Objet : [tcpm] New version for draft-ietf-tcpm-yang-tcp
> Hi all,
> The authors have published a new version -07 of draft-ietf-tcpm-
> yang-tcp. The long delay was mostly my fault, as my teaching day
> job keeps me busy.
> draft-ietf-tcpm-yang-tcp got quite some comments during IETF last
> call. In addition to directorate reviews, there were also further
> comments (see the TCPM list archive). As a result, -07 includes a
> number of changes. The diff can be seen at:
> I'd like to highlight several changes that may be relevant to
> 1/ There was a request to better align with the TCP MIB. We have
> not fully followed that request given TCPM decided against that in
> the past. Nonetheless, we have added the TCP connection state to
> the connection list similar to the TCP MIB. The state description
> follows 793bis. One specific question is whether it actually makes
> sense to have a state "closed". For -07, we have decided to model
> the state "closed".
> 2/ The TCP MIB includes a TCP listener table. We have added a
> corresponding list in -07. This again raises some subtle
> questions, most notably, how to model a TCP listener that accepts
> connections on any IPv4 and IPv6 address. The model in -07 allows
> this
> 3/ The modeling of TCP-AO authentication parameters has changed.
> The TCP-AO configuration has been moved to the key-chain, i.e.,
> the TCP model now augments the YANG model in RFC 8177. This should
> better align with running code. As far as we know, all router
> operating systems configure TCP-AO via the key-chain. The model
> now follows that approach, too.
> Please let us know if there are any comments regarding the new
> version -07. It is possible that a follow-up -08 may be needed
> soon-ish.
> Thanks
> Michael
> -----Original Message-----
> From: tcpm <> On Behalf Of internet-
> Sent: Thursday, June 16, 2022 6:03 PM
> To:
> Cc:
> Subject: [tcpm] I-D Action: draft-ietf-tcpm-yang-tcp-07.txt
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> This draft is a work item of the TCP Maintenance and Minor
> Extensions WG of the IETF.
>         Title           : A YANG Model for Transmission Control
> Protocol (TCP) Configuration and State
>         Authors         : Michael Scharf
>                           Mahesh Jethanandani
>                           Vishal Murgai
> 	Filename        : draft-ietf-tcpm-yang-tcp-07.txt
> 	Pages           : 28
> 	Date            : 2022-06-16
> Abstract:
>    This document specifies a minimal YANG model for TCP on devices
> that
>    are configured and managed by network management protocols.
> The YANG
>    model defines a container for all TCP connections, and
> groupings of
>    authentication parameters that can be imported and used in TCP
>    implementations or by other models that need to configure TCP
>    parameters.  The model also includes basic TCP statistics.  The
> model
>    is compliant with Network Management Datastore Architecture
> (NMDA)
>    (RFC 8342).
> The IETF datatracker status page for this draft is:
> There is also an htmlized version available at:
> A diff from the previous version is available at:
> Internet-Drafts are also available by rsync at
> _______________________________________________
> tcpm mailing list
> _______________________________________________
> tcpm mailing list


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