Questions about the draft of "A new Designated Forwarder Election for the EVPN"

Haoweiguo <haoweiguo@huawei.com> Tue, 30 September 2014 02:38 UTC

Return-Path: <haoweiguo@huawei.com>
X-Original-To: l2vpn@ietfa.amsl.com
Delivered-To: l2vpn@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 010E21A00C9 for <l2vpn@ietfa.amsl.com>; Mon, 29 Sep 2014 19:38:07 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.986
X-Spam-Level:
X-Spam-Status: No, score=-4.986 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-0.786, SPF_PASS=-0.001] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fA6b1USmOGdT for <l2vpn@ietfa.amsl.com>; Mon, 29 Sep 2014 19:38:04 -0700 (PDT)
Received: from lhrrgout.huawei.com (lhrrgout.huawei.com [194.213.3.17]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 763081A00B5 for <l2vpn@ietf.org>; Mon, 29 Sep 2014 19:38:04 -0700 (PDT)
Received: from 172.18.7.190 (EHLO lhreml406-hub.china.huawei.com) ([172.18.7.190]) by lhrrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id BKB30441; Tue, 30 Sep 2014 02:38:02 +0000 (GMT)
Received: from NKGEML406-HUB.china.huawei.com (10.98.56.37) by lhreml406-hub.china.huawei.com (10.201.5.243) with Microsoft SMTP Server (TLS) id 14.3.158.1; Tue, 30 Sep 2014 03:38:02 +0100
Received: from NKGEML501-MBS.china.huawei.com ([169.254.2.21]) by nkgeml406-hub.china.huawei.com ([10.98.56.37]) with mapi id 14.03.0158.001; Tue, 30 Sep 2014 10:37:56 +0800
From: Haoweiguo <haoweiguo@huawei.com>
To: "l2vpn@ietf.org" <l2vpn@ietf.org>
Subject: Questions about the draft of "A new Designated Forwarder Election for the EVPN"
Thread-Topic: Questions about the draft of "A new Designated Forwarder Election for the EVPN"
Thread-Index: Ac/cVzVI2xbfnFI0SNaQkvamT0+xcg==
Date: Tue, 30 Sep 2014 02:37:55 +0000
Message-ID: <DD5FC8DE455C3348B94340C0AB5517334F8069B8@nkgeml501-mbs.china.huawei.com>
Accept-Language: zh-CN, en-US
Content-Language: zh-CN
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [10.135.23.94]
Content-Type: multipart/alternative; boundary="_000_DD5FC8DE455C3348B94340C0AB5517334F8069B8nkgeml501mbschi_"
MIME-Version: 1.0
X-CFilter-Loop: Reflected
Archived-At: http://mailarchive.ietf.org/arch/msg/l2vpn/ga4ZLUyd_jX4jIyQ7RnSy5YjbjE
X-BeenThere: l2vpn@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Layer 2 Virtual Private Networks <l2vpn.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/l2vpn>, <mailto:l2vpn-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/l2vpn/>
List-Post: <mailto:l2vpn@ietf.org>
List-Help: <mailto:l2vpn-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/l2vpn>, <mailto:l2vpn-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 30 Sep 2014 02:38:07 -0000

Hi Co-authors,
In all-active connection case, to avoid frame duplication and looping, only one exit point multiple PEs corresponding to a ESI is allowed to egress BUM traffic from EVPN network to local access network among . DF election algorithm is a candidated solution. To overcome some DF election drawbacks,this draft proposed a new algorithm to replace DF election algorithm.

IEEE802.1AX,DRNI specs also can meet EVPN active-active connection requirements. Do you have plan to use IEEE existing standard to solve the problem?

Thanks

weiguo