[netconf] Re: I-D Action: draft-ietf-netconf-udp-notif-13.txt

[[e-mail]]

Hi Alex, all,

I’m afraid that the arguments to get assigned a well-known port number are lacking or weak if you will. This is even exacerbated in this specific context as you already need to know the IP address! The same “channel” used to retrieve/discover that IP address can be used to also supply the port number.

Please check rfc6335#section-7.2 and also rfc7605#section-7.

I suggest to fix draft-ietf-netconf-udp-client-server.

As I’m there, I think that you should also update your DTLS container with these refines

      refine "hello-params/tls-versions/min" {
        must "not(derived-from-or-self(current(), "
           + "'tlscmn:tls12'))" {
          error-message
                "TLS 1.2 is not supported as min TLS version";
        }
      }
      refine "hello-params/tls-versions/max" {
        must "not(derived-from-or-self(current(), "
           + "'tlscmn:tls12'))" {
          error-message
                "TLS 1.2 is not supported as max TLS version";
        }
      }

Cheers,
Med

De : Alex Huang Feng <[e-mail]>
Envoyé : jeudi 27 juin 2024 15:34
À : netconf <[e-mail]>
Objet : [netconf] Re: I-D Action: draft-ietf-netconf-udp-notif-13.txt


Dear NETCONF,

We submitted a new iteration of UDP-Notif with minor changes.

The YANG is using the generic UDP client groupings from draft-ietf-netconf-udp-client-server.
The impact is that now, we can configure a node to send UDP-notif notifications to a inet:host rather than only to inet:ip-address-no-zone and can set local addresses.

Given that in draft-ietf-netconf-udp-client-server the port is defined as a default port in the grouping, we had to ask IANA a default port for UDP-notif.
Note that there is an open thread on whether the generic udp-client-server-grouping should mandate a default port or not.


We welcome any new comments on the draft.


Regards,
Alex



On 27 Jun 2024, at 15:06, [e-mail]<mailto:[e-mail]> wrote:

Internet-Draft draft-ietf-netconf-udp-notif-13.txt is now available. It is a
work item of the Network Configuration (NETCONF) WG of the IETF.

  Title:   UDP-based Transport for Configured Subscriptions
  Authors: Guangying Zheng
           Tianran Zhou
           Thomas Graf
           Pierre Francois
           Alex Huang Feng
           Paolo Lucente
  Name:    draft-ietf-netconf-udp-notif-13.txt
  Pages:   32
  Dates:   2024-06-27

Abstract:

  This document describes a UDP-based protocol for YANG notifications
  to collect data from network nodes.  A shim header is proposed to
  facilitate the data streaming directly from the publishing process on
  network processor of line cards to receivers.  The objective is to
  provide a lightweight approach to enable higher frequency and less
  performance impact on publisher and receiver processes compared to
  already established notification mechanisms.

The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-netconf-udp-notif/

There is also an HTMLized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-netconf-udp-notif-13

A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-netconf-udp-notif-13

Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts


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