Re: [Bier] Call For Adoption: draft-zhang-bier-bierin6 Tue, 02 March 2021 01:49 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 250613A0AD6 for <>; Mon, 1 Mar 2021 17:49:55 -0800 (PST)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -1.917
X-Spam-Status: No, score=-1.917 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id ppicjbZqLnTq for <>; Mon, 1 Mar 2021 17:49:53 -0800 (PST)
Received: from ( []) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by (Postfix) with ESMTPS id AD9CE3A0AD5 for <>; Mon, 1 Mar 2021 17:49:52 -0800 (PST)
Received: from (unknown []) by Forcepoint Email with ESMTPS id 16D4DDF0B9B0BA933E0F; Tue, 2 Mar 2021 09:49:50 +0800 (CST)
Received: from (unknown []) by Forcepoint Email with ESMTPS id E6ED68F590533C45510C; Tue, 2 Mar 2021 09:49:49 +0800 (CST)
Received: from ([]) by with SMTP id 1221nZtj057085; Tue, 2 Mar 2021 09:49:35 +0800 (GMT-8) (envelope-from
Received: from mapi (njxapp02[null]) by mapi (Zmail) with MAPI id mid203; Tue, 2 Mar 2021 09:49:35 +0800 (CST)
Date: Tue, 2 Mar 2021 09:49:35 +0800 (CST)
X-Zmail-TransId: 2afa603d99afa9711702
X-Mailer: Zmail v1.0
Message-ID: <>
In-Reply-To: <>
Mime-Version: 1.0
From: <>
To: <>
Cc: <>, <>
Content-Type: multipart/mixed; boundary="=====_001_next====="
X-MAIL: 1221nZtj057085
Archived-At: <>
Subject: Re: [Bier] =?utf-8?q?Call_For_Adoption=3A_draft-zhang-bier-bierin6?=
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "\"Bit Indexed Explicit Replication discussion list\"" <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Tue, 02 Mar 2021 01:49:55 -0000

Hi Fanghong, 

You misunderstand the update of BIERin6, please find my comments with Sandy> below.




收件人;BIER WG;
日 期 :2021年03月02日 09:23
主 题 :Re: [Bier] Call For Adoption: draft-zhang-bier-bierin6

BIER mailing list




I see this document proposes 2 options for MVPN/EVPN.

One is using the destination address to carry the ID of an MVPN/EVPN, but this means that every BFR have to be aware of the MVPN/EVPN instance, introducing state of MVPN/EVPN service and forwarding overhead in transit BFR nodes.

Sandy> No. BFR needs not to know MVPN/EVPN instance. Only BFIR and BFER need to know it. 

The other is to use an IPv6 address after a BIER header and before the customer IP packet, however it proposes a new Proto value and new process in forwarding plane. 

I think both of the options have obvious defects, and thus I do not support the adoption.

Sandy> As I said, only BFIR and BFER need to process the new proto value, it doesn't make affection on the intermediate forwarding plane.


Thanks !

Fanghong Duan



From: BIER [] On Behalf Of Greg Shepherd
 Sent: Friday, February 26, 2021 12:37 AM
 To: BIER WG <>
 Subject: [Bier] Call For Adoption: draft-zhang-bier-bierin6


Thank you all for the active discussion that brought us to consensus. This draft now addresses all of the points of discussion for the solution.


Please reply to this thread with your support/opposition of WG adoption of the draft.