IETF Logo Mail Archive

Re: [OSPF] [OSPFv3-SR] Regarding Prefix SID Sub TLV advertisment for IPv6 data plane Segment routing

Peter Psenak <ppsenak@cisco.com> Mon, 16 January 2017 15:43 UTC

Return-Path: <ppsenak@cisco.com>
X-Original-To: ospf@ietfa.amsl.com
Delivered-To: ospf@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 23967129583 for <ospf@ietfa.amsl.com>; Mon, 16 Jan 2017 07:43:58 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -17.721
X-Spam-Level:
X-Spam-Status: No, score=-17.721 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-3.199, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com
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 Utc0lIcu0i-3 for <ospf@ietfa.amsl.com>; Mon, 16 Jan 2017 07:43:57 -0800 (PST)
Received: from aer-iport-4.cisco.com (aer-iport-4.cisco.com [173.38.203.54]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D3C0112957F for <ospf@ietf.org>; Mon, 16 Jan 2017 07:43:56 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1080; q=dns/txt; s=iport; t=1484581437; x=1485791037; h=message-id:date:from:mime-version:to:cc:subject: references:in-reply-to:content-transfer-encoding; bh=PoHkCWbYrEPJTFSVTZrjhgPNiv5HBmoeTh3cSTLOPK8=; b=GIO6KxNNjnxNDn6Uxhcx639OwetMdySOeI4+wYDKMugfbF3T/QA7nYUf zGC6IJX3u5Hb7PKUjgBJ+Kqh98AhVkT3tdP2yErkoxtqgM3YKFpQX4mmc QOkLMIlxeYUJimdwUNbLOgT8Vp68eXnKQrhRw4j3SkO8Q7zTpOIIHJrkD Q=;
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0CSAgCl6XxY/xbLJq1dGQEBAQEBAQEBA?= =?us-ascii?q?QEBBwEBAQEBgzkBAQEBAZBRkSOVLIILhiICgkcWAQIBAQEBAQEBYyiEaQEBAQM?= =?us-ascii?q?BOEEQCxgJJQ8CRgYNAQcBAYh3CLETigEBAQEBAQEBAQEBAQEBAQEBAQEghkWEZ?= =?us-ascii?q?4osAQSbOpFfgXeIOIY+iBqKUiYBMIEVEggVFYRxHBiBSD2JIwEBAQ?=
X-IronPort-AV: E=Sophos;i="5.33,239,1477958400"; d="scan'208";a="651676401"
Received: from aer-iport-nat.cisco.com (HELO aer-core-4.cisco.com) ([173.38.203.22]) by aer-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Jan 2017 15:43:52 +0000
Received: from [10.61.210.234] ([10.61.210.234]) by aer-core-4.cisco.com (8.14.5/8.14.5) with ESMTP id v0GFhpre004070; Mon, 16 Jan 2017 15:43:52 GMT
Message-ID: <587CEA37.20004@cisco.com>
Date: Mon, 16 Jan 2017 16:43:51 +0100
From: Peter Psenak <ppsenak@cisco.com>
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:24.0) Gecko/20100101 Thunderbird/24.4.0
MIME-Version: 1.0
To: Veerendranatha Reddy Vallem <veerendranatharv@huawei.com>, "'draft-ietf-ospf-ospfv3-segment-routing-extensions@ietf.org'" <'draft-ietf-ospf-ospfv3-segment-routing-extensions@ietf.org'>
References: <73BFDDFFF499304EB26FE5FDEF20F78850865A6E@blreml501-mbx>
In-Reply-To: <73BFDDFFF499304EB26FE5FDEF20F78850865A6E@blreml501-mbx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/ospf/dxOtbtlbOJAslf6dtjtNaqnRlzI>
Cc: "ospf@ietf.org" <ospf@ietf.org>
Subject: Re: [OSPF] [OSPFv3-SR] Regarding Prefix SID Sub TLV advertisment for IPv6 data plane Segment routing
X-BeenThere: ospf@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: The Official IETF OSPG WG Mailing List <ospf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ospf>, <mailto:ospf-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ospf/>
List-Post: <mailto:ospf@ietf.org>
List-Help: <mailto:ospf-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ospf>, <mailto:ospf-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 16 Jan 2017 15:43:58 -0000

Veerendranath,

On 16/01/17 14:46 , Veerendranatha Reddy Vallem wrote:
> Dear Authors,
>
> I am requesting your clarification regarding prefix-SID sub TLV
>   advertisement for IPv6 data plane.
>
> In case of data plane is IPV6 data plane,  while advertising IPv6 prefix
> (Node/Prefix SID) in E-intra/E-inter prefix TLV of extension LSAS,
> whether we need to include Prefix-SID sub TLV.

definitely not the Prefix-SID sub TLV as defined in the draft - that was 
defined for MPLS data plane.

The draft needs more work/changes for the IPv6 data plane. We are 
planning to update it accordingly.

thanks,
Petetr

>
> If need to include, we can encode  Ipv6 address prefix in SID/Label sub
> TLV. As per draft, if the length of this sub TLV must be 3 or 4.
>
> For Adj-SID,  for SID filed it is clearly mention it may be ipv6
> address, but it is not mentioned for Prefix- SID sub TLV.
>
> It means for IPv6 prefix segment advertisement , Prefix-SID sub TLV  may
> not be required to advertise in extension LSAs.
>
> Regards,
>
> Veerendranath
>

v2.8.7 | Report a Bug | By Email