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From: Zhen Cao <zhencao.ietf@gmail.com>
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Subject: [Int-dir] Intdir early review of draft-ietf-dhc-rfc3315bis-10
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Reviewer: Zhen Cao
Review result: Ready with Issues

I am an assigned INT directorate reviewer for this draft. These
comments were written primarily for the benefit of the Internet Area
Directors. Document editors and shepherds should treat these comments
just like they would treat comments from any other IETF contributors
and resolve them along with any other Last Call comments that have
been received. For more details of the INT directorate, see
<http://www.ietf.org/iesg/directorate.html>.

This version is quite ready to go, with a small issue that I would like to
discussion:

In Section. 15 (Reliability of Client Initiated Message Exchanges), I strongly
recommend that implementation MUST NOT set both MRC or MRD to ZERO, which
attaches a possible risk that the client continues to send this message without
a stop.    So I would like to propose the following change:

s/
" If both MRC and MRD are zero, the client continues to transmit the
   message until it receives a response."
/
"The client must be informed with a limit of its retransmission behavior, and
MUST NOT set both MRC and MRD to zero"

-zhen



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From: "Bernie Volz (volz)" <volz@cisco.com>
To: Zhen Cao <zhencao.ietf@gmail.com>, "int-dir@ietf.org" <int-dir@ietf.org>
CC: "dhcwg@ietf.org" <dhcwg@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>, "draft-ietf-dhc-rfc3315bis.all@ietf.org" <draft-ietf-dhc-rfc3315bis.all@ietf.org>
Thread-Topic: [Int-dir] Intdir early review of draft-ietf-dhc-rfc3315bis-10
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Subject: Re: [Int-dir] Intdir early review of draft-ietf-dhc-rfc3315bis-10
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Hi Zhen:

First, thanks for the Int-Dir review.

Regarding your comment, the cases where both MRC and MRD are zero is for a =
Solicit and Information-Request. And, for those particular cases, the clien=
t should probably retransmit "forever" at a hopefully low rate (SOL_MAX_RT =
and INF_MAX_RT are 3600 seconds*) to locate a  DHCP server. This of course =
depends on the RA M & O bits (indicating a DHCP server is available) or the=
 manual configuration of the client (to explicitly run DHCP).

* - RFC 3315 used 120 seconds for these values, but that was updated by RFC=
 7083.

- Bernie

-----Original Message-----
From: Int-dir [mailto:int-dir-bounces@ietf.org] On Behalf Of Zhen Cao
Sent: Wednesday, November 01, 2017 3:41 AM
To: int-dir@ietf.org
Cc: dhcwg@ietf.org; ietf@ietf.org; draft-ietf-dhc-rfc3315bis.all@ietf.org
Subject: [Int-dir] Intdir early review of draft-ietf-dhc-rfc3315bis-10

Reviewer: Zhen Cao
Review result: Ready with Issues

I am an assigned INT directorate reviewer for this draft. These comments we=
re written primarily for the benefit of the Internet Area Directors. Docume=
nt editors and shepherds should treat these comments just like they would t=
reat comments from any other IETF contributors and resolve them along with =
any other Last Call comments that have been received. For more details of t=
he INT directorate, see <http://www.ietf.org/iesg/directorate.html>.

This version is quite ready to go, with a small issue that I would like to
discussion:

In Section. 15 (Reliability of Client Initiated Message Exchanges), I stron=
gly recommend that implementation MUST NOT set both MRC or MRD to ZERO, whi=
ch attaches a possible risk that the client continues to send this message =
without
a stop.    So I would like to propose the following change:

s/
" If both MRC and MRD are zero, the client continues to transmit the
   message until it receives a response."
/
"The client must be informed with a limit of its retransmission behavior, a=
nd MUST NOT set both MRC and MRD to zero"

-zhen


_______________________________________________
Int-dir mailing list
Int-dir@ietf.org
https://www.ietf.org/mailman/listinfo/int-dir


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From: Zhen Cao <zhencao.ietf@gmail.com>
Date: Thu, 2 Nov 2017 11:30:02 +0800
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To: "Bernie Volz (volz)" <volz@cisco.com>
Cc: "int-dir@ietf.org" <int-dir@ietf.org>, "dhcwg@ietf.org" <dhcwg@ietf.org>,  "ietf@ietf.org" <ietf@ietf.org>, "draft-ietf-dhc-rfc3315bis.all@ietf.org" <draft-ietf-dhc-rfc3315bis.all@ietf.org>
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Subject: Re: [Int-dir] Intdir early review of draft-ietf-dhc-rfc3315bis-10
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Hi Bernie,

> First, thanks for the Int-Dir review.
My pleasure as always.

>
> Regarding your comment, the cases where both MRC and MRD are zero is for =
a Solicit and Information-Request. And, for those particular cases, the cli=
ent should probably retransmit "forever" at a hopefully low rate (SOL_MAX_R=
T and INF_MAX_RT are 3600 seconds*) to locate a  DHCP server. This of cours=
e depends on the RA M & O bits (indicating a DHCP server is available) or t=
he manual configuration of the client (to explicitly run DHCP).

Then depending on this information, it is up to you to see if there is
a need of an affordable better description than the current text.

Cheers,
zhen

>
> * - RFC 3315 used 120 seconds for these values, but that was updated by R=
FC 7083.
>
> - Bernie
>
> -----Original Message-----
> From: Int-dir [mailto:int-dir-bounces@ietf.org] On Behalf Of Zhen Cao
> Sent: Wednesday, November 01, 2017 3:41 AM
> To: int-dir@ietf.org
> Cc: dhcwg@ietf.org; ietf@ietf.org; draft-ietf-dhc-rfc3315bis.all@ietf.org
> Subject: [Int-dir] Intdir early review of draft-ietf-dhc-rfc3315bis-10
>
> Reviewer: Zhen Cao
> Review result: Ready with Issues
>
> I am an assigned INT directorate reviewer for this draft. These comments =
were written primarily for the benefit of the Internet Area Directors. Docu=
ment editors and shepherds should treat these comments just like they would=
 treat comments from any other IETF contributors and resolve them along wit=
h any other Last Call comments that have been received. For more details of=
 the INT directorate, see <http://www.ietf.org/iesg/directorate.html>.
>
> This version is quite ready to go, with a small issue that I would like t=
o
> discussion:
>
> In Section. 15 (Reliability of Client Initiated Message Exchanges), I str=
ongly recommend that implementation MUST NOT set both MRC or MRD to ZERO, w=
hich attaches a possible risk that the client continues to send this messag=
e without
> a stop.    So I would like to propose the following change:
>
> s/
> " If both MRC and MRD are zero, the client continues to transmit the
>    message until it receives a response."
> /
> "The client must be informed with a limit of its retransmission behavior,=
 and MUST NOT set both MRC and MRD to zero"
>
> -zhen
>
>
> _______________________________________________
> Int-dir mailing list
> Int-dir@ietf.org
> https://www.ietf.org/mailman/listinfo/int-dir


From nobody Thu Nov  2 06:34:22 2017
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From: "Bernie Volz (volz)" <volz@cisco.com>
To: Zhen Cao <zhencao.ietf@gmail.com>
CC: "int-dir@ietf.org" <int-dir@ietf.org>, "dhcwg@ietf.org" <dhcwg@ietf.org>,  "ietf@ietf.org" <ietf@ietf.org>, "draft-ietf-dhc-rfc3315bis.all@ietf.org" <draft-ietf-dhc-rfc3315bis.all@ietf.org>
Thread-Topic: [Int-dir] Intdir early review of draft-ietf-dhc-rfc3315bis-10
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Subject: Re: [Int-dir] Intdir early review of draft-ietf-dhc-rfc3315bis-10
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