From: Alexander Vainshtein <Alexander.Vainshtein@rbbn.com>
To: "draft-ietf-bess-rfc7432bis@ietf.org"
	<draft-ietf-bess-rfc7432bis@ietf.org>
Thread-Topic: A question about Section 18 of draft-ietf-bess-rfc7432bis
Thread-Index: AQHbaxFEG6CAQvxa2k6wtVTcggLLsw==
Date: Mon, 20 Jan 2025 09:05:16 +0000
Message-ID: 
 <PH0PR03MB6300D1001FA16910FF457AE5F6E72@PH0PR03MB6300.namprd03.prod.outlook.com>
Accept-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: 
 =?us-ascii?Q?N2BXlMivvS/GqQaC8pPsNDf9dKIVndiqTq7ODvVvNSt2Zygq+F1xHuuvKvVe?=
 =?us-ascii?Q?+FndiMHKTPdlc1AA1r/rFzfAPcoupJGIT03N6wdVwPhAp0G1M52B14Bx/Fdp?=
 =?us-ascii?Q?XCInVhXVyJOEF1dJ/e8oS1DlB6QHJLCBe4elFU2bfI/U4njoPsYQg4ciY3nM?=
 =?us-ascii?Q?mBpCHPpaya45n8hD6QuJ4sYYDDJNp7eM39uXzLYSnx8XNVRB7Mp0ZP8lNK8K?=
 =?us-ascii?Q?VdmYQ+CNYJdohOl+Ts1+zgVEnTqgPIMTBeXAWA9khby8KD0IMqqBvOih6vbo?=
 =?us-ascii?Q?9OXv+acEnvLIL48360wd1IiCCgVaZj/IiHnDKoWORvDJT/Io769wbVsEwOxl?=
 =?us-ascii?Q?PBK5JvLsB0eDlf4h36Q0L/mPRJRVfONmI3JwKwP/uZh467kmapiBzER56BPr?=
 =?us-ascii?Q?iUgfUBCT+xMMK1PKBx0AxHuZWf26+ojVgRnCO51iM/A+HSnUucp15Jr0DLfi?=
 =?us-ascii?Q?fQsC3vB335/DDueDednAt6PzoTxSVz534xWWnz4bq79kQnjf1kLSyXuTCJ2K?=
 =?us-ascii?Q?X4Fdqyoii6/QIU7fNd+ma+UxveEln44ioJkjDQbxwyN6+3LOkdwDOp+gQh1Z?=
 =?us-ascii?Q?VEBxtoyaic6Lx4ZzoeauEOv2QvmN7XquOzNyT9a567A+LM8mXZ6wYrRRYk06?=
 =?us-ascii?Q?gt5MG+b/Z+FDBPOO4ZMmDL+aN09jEcq0Efx0J8kHPV6IbnR8JbuT0567Wnv+?=
 =?us-ascii?Q?9ElEerJ1SnbmnV+4xZzbD9diOGi6WB/GiPaGMmNmGoAO3BUBhvU+aIGSOMsw?=
 =?us-ascii?Q?X4czKZQSHPs/jbL7acyVZw+7xJDlQaXwE6yyiIvPaNqlB293YxxedyPUbWCv?=
 =?us-ascii?Q?Ewf12xII2Zi7fdsuMgmervEAiLvXzr8twdgSkKO0UKDWpIIWjV+dePhR1K8/?=
 =?us-ascii?Q?NxpNWh1876VtbcZJiH8HHKewlPLS1ZATyJFiYg951LfyYEqJU0KHZkWFgjRQ?=
 =?us-ascii?Q?kwWuOG3RKFFzUlEQfCWBJ9Qi2E64MK/ZJQGHHzdummz61XcP5OaFbbujB6nx?=
 =?us-ascii?Q?1Q2mtga1JF1JHq3vwoZaOsEqCSa9re2r4PlWj1HTRZ/QnZVZqOMX2tOBYdUe?=
 =?us-ascii?Q?nTPHC1gL/+EcmtPGD+UNmq7C2ww+vU9MbnvKn9T3m9AET9RwiTg1ynnQ15nh?=
 =?us-ascii?Q?TY3b4CQFDM0pY7iOTVPBoZo9SBjyd2jyEbvfmp2d3vRNf/NKOUCZNqjKo/NX?=
 =?us-ascii?Q?B+Tkiq4YJmpAooTH0qxgajBQQgOTTkLzrG3wcInoGrZbfzdI0Ju9+vBvhwOQ?=
 =?us-ascii?Q?p3JBQIVR/rw/QQsG4tg5WAC3gPa/Awe3JASUSUG+oA0qqlUct/ZYjcZq2KKx?=
 =?us-ascii?Q?Wuv47+O9TR6LLtmhaoovlC2wTvLYO26xsIxXteIP4IrqW2I4iL59hwxDoK0h?=
 =?us-ascii?Q?wLbsLk7JOOFm+Qabhp4C8AWwQ6cxgUZhaW+yFFdnuF7hUoxZRN1fp/DKsfbr?=
 =?us-ascii?Q?Eh7nhlXCNZnlAqEiiNxHazdfrGXUFEtdP53/ll9fpXHGnRdhoqOGEHA7VZKQ?=
 =?us-ascii?Q?U/j+1hwOLY19BBLHjn4EO15si+6FXtKfwf9Ff0CEQc1szicdEaHLazTw1m3S?=
 =?us-ascii?Q?kKUc3mQXpu0iUSzL/Avi7Kr1iV4+g9JAiPdWNy3w?=
MIME-Version: 1.0
X-OriginatorOrg: rbbn.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: PH0PR03MB6300.namprd03.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 
 1dbf6c5f-cdd4-4b6d-4806-08dd39318ea3
X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Jan 2025 09:05:16.5208
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 29a671dc-ed7e-4a54-b1e5-8da1eb495dc3
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: 
 g2mtLo8EOjJrXyiJshq1ri5ektlG9obGGQRjNT+R0EuFYDQySzDXj2GtMUqau0qp2RfMLIwXPvZ4ExFb7Ii10w==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH7PR03MB7857
X-Mimecast-Spam-Score: 0
X-Mimecast-MFC-PROC-ID: tSE3JMzF-argp-M-FD3uwKHJtV2k9Ier04SFY_fdnDw_1737363919
X-Mimecast-Originator: rbbn.com
Content-Language: en-US
Content-Type: multipart/alternative;
	boundary="_000_PH0PR03MB6300D1001FA16910FF457AE5F6E72PH0PR03MB6300namp_"
Message-ID-Hash: IJVP2OHBFLGJBHEV7ESJFNFQQVBAS6GM
X-Message-ID-Hash: IJVP2OHBFLGJBHEV7ESJFNFQQVBAS6GM
X-MailFrom: alexander.vainshtein@rbbn.com
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency;
 loop; banned-address; member-moderation; header-match-bess.ietf.org-0;
 nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size;
 news-moderation; no-subject; digests; suspicious-header
CC: "bess@ietf.org" <bess@ietf.org>
X-Mailman-Version: 3.3.9rc6
Precedence: list
Subject: =?utf-8?q?=5Bbess=5D_A_question_about_Section_18_of_draft-ietf-bess-rfc7432b?=
	=?utf-8?q?is?=
List-Id: BGP-Enabled ServiceS working group discussion list <bess.ietf.org>
Archived-At: 
 <https://mailarchive.ietf.org/arch/msg/bess/ocLgmqauO7sq_EzPjvdEzlmMDtc>
List-Archive: <https://mailarchive.ietf.org/arch/browse/bess>
List-Help: <mailto:bess-request@ietf.org?subject=help>
List-Owner: <mailto:bess-owner@ietf.org>
List-Post: <mailto:bess@ietf.org>
List-Subscribe: <mailto:bess-join@ietf.org>
List-Unsubscribe: <mailto:bess-leave@ietf.org>

--_000_PH0PR03MB6300D1001FA16910FF457AE5F6E72PH0PR03MB6300namp_
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Hi,
I have a question about Section 18 "Frame Ordering" of the draft.

It says that the control word "MUST be used with the value 0 (e.g., a 4-oct=
et field with a value of zero) when sending unicast EVPN-encapsulated packe=
ts over an MP2P LSP".

I wonder whether "unicast" in this text includes unknown unicast if it is f=
looded via MP2P LSPs.

Broadcast and multicast traffic which is flooded together with unknown unic=
ast traffic does not really need inclusion of the CW because the first octe=
t of these frames is always odd.

I would also like to understand whether negotiation of the CW usage (as des=
cribed in Section 7.11.2of the draft refers just to known unicast or also t=
o BUM traffic.

Regards and lots if thanks in advance,
Sasha



Get Outlook for Android<https://aka.ms/AAb9ysg>

Disclaimer

This e-mail together with any attachments may contain information of Ribbon=
 Communications Inc. and its Affiliates that is confidential and/or proprie=
tary for the sole use of the intended recipient. Any review, disclosure, re=
liance or distribution by others or forwarding without express permission i=
s strictly prohibited. If you are not the intended recipient, please notify=
 the sender immediately and then delete all copies, including any attachmen=
ts.

--_000_PH0PR03MB6300D1001FA16910FF457AE5F6E72PH0PR03MB6300namp_
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<html><head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
<style type=3D"text/css">.style1 {font-family: "Times New Roman";}</style><=
/head><body>
<div dir=3D"auto">Hi,</div>
<div dir=3D"auto">I have a question about Section 18 &quot;Frame Ordering&q=
uot; of the draft.</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">It says that the control word &quot;<span style=3D"font-f=
amily: &quot;Noto Sans Mono&quot;, SFMono-Regular, Menlo, Monaco, Consolas,=
 &quot;Liberation Mono&quot;, &quot;Courier New&quot;, monospace; font-size=
: 8.448px; color: rgb(33, 37, 41);">MUST be used with the value 0 (e.g.,
 a 4-octet field with a value of zero) when sending <b><i>unicast</i></b> E=
VPN-encapsulated packets over an MP2P LSP</span><span style=3D"font-size: 1=
2pt;">&quot;.</span></div>
<div dir=3D"auto"><span style=3D"font-size: 12pt;"><br>
</span></div>
<div dir=3D"auto"><span style=3D"font-size: 12pt;">I wonder whether &quot;<=
b><i>unicast</i></b>&quot; in this text includes
<b><i>unknown unicast</i></b> if it is flooded via MP2P LSPs.</span></div>
<div dir=3D"auto"><span style=3D"font-size: 12pt;"><br>
</span></div>
<div dir=3D"auto">Broadcast and multicast traffic which is flooded together=
 with unknown unicast traffic does not really need inclusion of the CW beca=
use the first octet of these frames is always odd.</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">I would also like to understand whether negotiation of th=
e CW usage (as described in Section 7.11.2of the draft refers just to known=
 unicast or also to BUM traffic.</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">Regards and lots if thanks in advance,</div>
<div dir=3D"auto">Sasha</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto" id=3D"ms-outlook-mobile-signature">
<div><br>
</div>
Get <a href=3D"https://aka.ms/AAb9ysg">Outlook for Android</a></div>


<br><br><p style=3D"font-family: Verdana; font-size:10pt; color:#666666;"><=
b>Disclaimer</b></p><p style=3D"font-family: Verdana; font-size:8pt; color:=
#666666;">This e-mail together with any attachments may contain information=
 of Ribbon Communications Inc. and its Affiliates that is confidential and/=
or proprietary for the sole use of the intended recipient. Any review, disc=
losure, reliance or distribution by others or forwarding without express pe=
rmission is strictly prohibited. If you are not the intended recipient, ple=
ase notify the sender immediately and then delete all copies, including any=
 attachments.
</p></body></html>

--_000_PH0PR03MB6300D1001FA16910FF457AE5F6E72PH0PR03MB6300namp_--