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From: Andy Bierman <andy@yumaworks.com>
Date: Fri, 20 Sep 2024 09:18:50 -0700
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On Fri, Sep 20, 2024 at 9:08=E2=80=AFAM Kent Watsen <kent+ietf@watsen.net> =
wrote:

>
> Let me clarify, I=E2=80=99m trying to close the "default 0=E2=80=9D state=
ment on the
> "local-port=E2=80=9D leafs issue.  Whether rfc8407bis is updated is a sec=
ondary
> concern.
>
> Andy (and others), do you believe this (to never set =E2=80=9Cdefault=E2=
=80=9D or
> =E2=80=9Cmandatory=E2=80=9D) to be a best-practice for reusable groupings=
?  Or more
> specifically and better for me, do you think the  "default 0=E2=80=9D sta=
tement on
> the "local-port=E2=80=9D leafs is okay or should be removed (in the
> tcl-client-server draft)?
>
>
In this case, default 0 meant use whatever port you want.
IMO that is a bad practice and should never be done.

In this case, the default is for an application well-known port assignment,
so the
groupings for the application should set the default port.

Kent
>
>
Andy


>
> > On Sep 20, 2024, at 11:14=E2=80=AFAM, Andy Bierman <andy@yumaworks.com>=
 wrote:
> >
> > Hi,
> >
> > I do not think any new YANG guidelines need to be added to the already
> > completed rfc8407bis.
> > This is a design decision based on the intended reuse of the groupings.
> >
> > Here is a common sense guideline:  Document the grouping reuse
> limitations
> > in the description-stmt.
> >
> >
> > Andy
> >
> >
> >
> >
> > On Fri, Sep 20, 2024 at 8:02=E2=80=AFAM Kent Watsen <kent+ietf@watsen.n=
et>
> wrote:
> >
> >>
> >> Can folks please chime in on this discussion to help bring it to a
> close?
> >>
> >> I rescinded my AUTH48 =E2=80=9Capproval=E2=80=9D for the tcp-client-se=
rver draft pending
> >> the outcome of this discussion.
> >>
> >> PS: I see that Thomas CC-ed NETMOD, which makes sense given a potentia=
l
> >> update to rfc8407bis.
> >>
> >> Kent
> >>
> >>
> >> On Sep 18, 2024, at 2:52=E2=80=AFAM, Thomas.Graf@swisscom.com wrote:
> >>
> >> Dear Kent, Andy and Alex,
> >>
> >> I think Alex statement
> >>
> https://mailarchive.ietf.org/arch/msg/netconf/5Yaiom0B0lDTeSPOvgNfPIEFvBw=
/
> ,
> >> Andy's feedback and guidelines in
> >> https://datatracker.ietf.org/doc/html/rfc8407#section-4.4 resp.
> >>
> https://datatracker.ietf.org/doc/html/draft-ietf-netmod-rfc8407bis-15#sec=
tion-4.4
> >> makes perfectly sense and I don't see why we should do else. As an
> >> author, I suggest to add in section 4 of draft-ietf-netmod-rfc8407bis
> based
> >> on the conclusion of this discussion guidelines on reusable YANG
> groupings.
> >>
> >> Best wishes
> >> Thomas
> >>
> >> *From:* Kent Watsen <kent+ietf@watsen.net>
> >> *Sent:* Wednesday, September 18, 2024 3:12 AM
> >> *To:* Andy Bierman <andy@yumaworks.com>
> >> *Cc:* netconf@ietf.org;
> >> draft-ietf-netconf-udp-client-server.authors@ietf.org
> >> *Subject:* [netconf] Re: Default statements on udp-client-server
> groupings
> >>
> >> *Be aware:* This is an external email.
> >>
> >> Hi Andy,
> >>
> >>
> >> The main purpose for YANG defaults is ease of use.
> >> If there are less things to configure then the device is easier to use=
.
> >> Without a default port then this parameter becomes mandatory to
> configure
>
>

--000000000000b1e1d606228f6591
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Fri, Sep 20, 2024 at 9:08=E2=80=AF=
AM Kent Watsen &lt;<a href=3D"mailto:kent%2Bietf@watsen.net">kent+ietf@wats=
en.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"m=
argin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left=
:1ex"><br>
Let me clarify, I=E2=80=99m trying to close the &quot;default 0=E2=80=9D st=
atement on the &quot;local-port=E2=80=9D leafs issue.=C2=A0 Whether rfc8407=
bis is updated is a secondary concern.=C2=A0 <br>
<br>
Andy (and others), do you believe this (to never set =E2=80=9Cdefault=E2=80=
=9D or =E2=80=9Cmandatory=E2=80=9D) to be a best-practice for reusable grou=
pings?=C2=A0 Or more specifically and better for me, do you think the=C2=A0=
 &quot;default 0=E2=80=9D statement on the &quot;local-port=E2=80=9D leafs =
is okay or should be removed (in the tcl-client-server draft)?<br>
<br></blockquote><div><br></div><div>In this case, default 0 meant use what=
ever port you want.</div><div>IMO that is a bad practice and should never b=
e done.</div><div><br></div><div>In this case, the default is for an applic=
ation well-known=C2=A0port assignment, so the</div><div>groupings for the a=
pplication should set the default port.=C2=A0</div><div><br></div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px =
solid rgb(204,204,204);padding-left:1ex">
Kent<br>
<br></blockquote><div><br></div><div>Andy</div><div>=C2=A0</div><blockquote=
 class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px so=
lid rgb(204,204,204);padding-left:1ex">
<br>
&gt; On Sep 20, 2024, at 11:14=E2=80=AFAM, Andy Bierman &lt;<a href=3D"mail=
to:andy@yumaworks.com" target=3D"_blank">andy@yumaworks.com</a>&gt; wrote:<=
br>
&gt; <br>
&gt; Hi,<br>
&gt; <br>
&gt; I do not think any new YANG guidelines need to be added to the already=
<br>
&gt; completed rfc8407bis.<br>
&gt; This is a design decision based on the intended reuse of the groupings=
.<br>
&gt; <br>
&gt; Here is a common sense guideline:=C2=A0 Document the grouping reuse li=
mitations<br>
&gt; in the description-stmt.<br>
&gt; <br>
&gt; <br>
&gt; Andy<br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt; On Fri, Sep 20, 2024 at 8:02=E2=80=AFAM Kent Watsen &lt;<a href=3D"mai=
lto:kent%2Bietf@watsen.net" target=3D"_blank">kent+ietf@watsen.net</a>&gt; =
wrote:<br>
&gt; <br>
&gt;&gt; <br>
&gt;&gt; Can folks please chime in on this discussion to help bring it to a=
 close?<br>
&gt;&gt; <br>
&gt;&gt; I rescinded my AUTH48 =E2=80=9Capproval=E2=80=9D for the tcp-clien=
t-server draft pending<br>
&gt;&gt; the outcome of this discussion.<br>
&gt;&gt; <br>
&gt;&gt; PS: I see that Thomas CC-ed NETMOD, which makes sense given a pote=
ntial<br>
&gt;&gt; update to rfc8407bis.<br>
&gt;&gt; <br>
&gt;&gt; Kent<br>
&gt;&gt; <br>
&gt;&gt; <br>
&gt;&gt; On Sep 18, 2024, at 2:52=E2=80=AFAM, <a href=3D"mailto:Thomas.Graf=
@swisscom.com" target=3D"_blank">Thomas.Graf@swisscom.com</a> wrote:<br>
&gt;&gt; <br>
&gt;&gt; Dear Kent, Andy and Alex,<br>
&gt;&gt; <br>
&gt;&gt; I think Alex statement<br>
&gt;&gt; <a href=3D"https://mailarchive.ietf.org/arch/msg/netconf/5Yaiom0B0=
lDTeSPOvgNfPIEFvBw/" rel=3D"noreferrer" target=3D"_blank">https://mailarchi=
ve.ietf.org/arch/msg/netconf/5Yaiom0B0lDTeSPOvgNfPIEFvBw/</a>,<br>
&gt;&gt; Andy&#39;s feedback and guidelines in<br>
&gt;&gt; <a href=3D"https://datatracker.ietf.org/doc/html/rfc8407#section-4=
.4" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/h=
tml/rfc8407#section-4.4</a> resp.<br>
&gt;&gt; <a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-netmod=
-rfc8407bis-15#section-4.4" rel=3D"noreferrer" target=3D"_blank">https://da=
tatracker.ietf.org/doc/html/draft-ietf-netmod-rfc8407bis-15#section-4.4</a>=
<br>
&gt;&gt; makes perfectly sense and I don&#39;t see why we should do else. A=
s an<br>
&gt;&gt; author, I suggest to add in section 4 of draft-ietf-netmod-rfc8407=
bis based<br>
&gt;&gt; on the conclusion of this discussion guidelines on reusable YANG g=
roupings.<br>
&gt;&gt; <br>
&gt;&gt; Best wishes<br>
&gt;&gt; Thomas<br>
&gt;&gt; <br>
&gt;&gt; *From:* Kent Watsen &lt;<a href=3D"mailto:kent%2Bietf@watsen.net" =
target=3D"_blank">kent+ietf@watsen.net</a>&gt;<br>
&gt;&gt; *Sent:* Wednesday, September 18, 2024 3:12 AM<br>
&gt;&gt; *To:* Andy Bierman &lt;<a href=3D"mailto:andy@yumaworks.com" targe=
t=3D"_blank">andy@yumaworks.com</a>&gt;<br>
&gt;&gt; *Cc:* <a href=3D"mailto:netconf@ietf.org" target=3D"_blank">netcon=
f@ietf.org</a>;<br>
&gt;&gt; <a href=3D"mailto:draft-ietf-netconf-udp-client-server.authors@iet=
f.org" target=3D"_blank">draft-ietf-netconf-udp-client-server.authors@ietf.=
org</a><br>
&gt;&gt; *Subject:* [netconf] Re: Default statements on udp-client-server g=
roupings<br>
&gt;&gt; <br>
&gt;&gt; *Be aware:* This is an external email.<br>
&gt;&gt; <br>
&gt;&gt; Hi Andy,<br>
&gt;&gt; <br>
&gt;&gt; <br>
&gt;&gt; The main purpose for YANG defaults is ease of use.<br>
&gt;&gt; If there are less things to configure then the device is easier to=
 use.<br>
&gt;&gt; Without a default port then this parameter becomes mandatory to co=
nfigure<br>
<br>
</blockquote></div></div>

--000000000000b1e1d606228f6591--

