IETF Logo Mail Archive

Re: [Lsr] Working Group Last Call for draft-ietf-lsr-isis-rfc5306bis-00 - Restart Signaling for IS-IS

"Les Ginsberg (ginsberg)" <ginsberg@cisco.com> Tue, 20 November 2018 01:57 UTC

Return-Path: <ginsberg@cisco.com>
X-Original-To: lsr@ietfa.amsl.com
Delivered-To: lsr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EE29A12D4ED for <lsr@ietfa.amsl.com>; Mon, 19 Nov 2018 17:57:56 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -14.969
X-Spam-Level:
X-Spam-Status: No, score=-14.969 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.47, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001, URIBL_BLOCKED=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 MEAYJSXz-Yh0 for <lsr@ietfa.amsl.com>; Mon, 19 Nov 2018 17:57:54 -0800 (PST)
Received: from rcdn-iport-8.cisco.com (rcdn-iport-8.cisco.com [173.37.86.79]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id BF2A91292AD for <lsr@ietf.org>; Mon, 19 Nov 2018 17:57:54 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=9026; q=dns/txt; s=iport; t=1542679074; x=1543888674; h=from:to:subject:date:message-id:references:in-reply-to: mime-version; bh=TR7o58wnrbF9Y9A2gHdFBJMUV72mRW7eR3fmq5UqJSc=; b=gZzu1kiuwwAvOzSGo1yYVqLhqLBlcuBAzHLJupY8CicvSjEE/wvgggOn sOOoNdbFf/tKW2Fyc0cBGLaXD8nDFqRguXpU4EvpvQjz75nHdorRxPasT 0n0beICJ9Z6rwFnb9QMGJ6bR4socCvE4AzFjJE9QK8EMuzllgprds8AmA Q=;
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: A0AEAABzafNb/5hdJa1kGgEBAQEBAgEBAQEHAgEBAQGBUQUBAQEBCwGBDXZmgQInCoNuiBiLfoINkWOFVIF6CwEBhGwCF4NWIjQJDQEDAQECAQECbSiFPAEBAQEDHQYKXAIBCBEEAQErAgICMB0IAgQBEgiDGoEdZKdSgS+KJowFF4FAP4EQgxOFJIJeglcCjniQdwkCkR0ggViFCIodl28CERSBJx84gVVwFYMnglCOCkExjHOBHwEB
X-IronPort-AV: E=Sophos;i="5.56,255,1539648000"; d="scan'208,217";a="483288581"
Received: from rcdn-core-1.cisco.com ([173.37.93.152]) by rcdn-iport-8.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Nov 2018 01:57:53 +0000
Received: from XCH-ALN-011.cisco.com (xch-aln-011.cisco.com [173.36.7.21]) by rcdn-core-1.cisco.com (8.15.2/8.15.2) with ESMTPS id wAK1vrU0028559 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL) for <lsr@ietf.org>; Tue, 20 Nov 2018 01:57:53 GMT
Received: from xch-aln-001.cisco.com (173.36.7.11) by XCH-ALN-011.cisco.com (173.36.7.21) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 19 Nov 2018 19:57:53 -0600
Received: from xch-aln-001.cisco.com ([173.36.7.11]) by XCH-ALN-001.cisco.com ([173.36.7.11]) with mapi id 15.00.1395.000; Mon, 19 Nov 2018 19:57:52 -0600
From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: Working Group Last Call for draft-ietf-lsr-isis-rfc5306bis-00 - Restart Signaling for IS-IS
Thread-Index: AQHUgFZKcJQaAjWOZUa249M4IQn8WaVX5LjQ
Date: Tue, 20 Nov 2018 01:57:52 +0000
Message-ID: <1e5e2e0c733644689749b0b77ba6ff3d@XCH-ALN-001.cisco.com>
References: <CA879F92-9118-4851-9369-75E8FBE6C49A@cisco.com>
In-Reply-To: <CA879F92-9118-4851-9369-75E8FBE6C49A@cisco.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-ms-exchange-transport-fromentityheader: Hosted
x-originating-ip: [10.24.42.169]
Content-Type: multipart/alternative; boundary="_000_1e5e2e0c733644689749b0b77ba6ff3dXCHALN001ciscocom_"
MIME-Version: 1.0
X-Outbound-SMTP-Client: 173.36.7.21, xch-aln-011.cisco.com
X-Outbound-Node: rcdn-core-1.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/Ou9XOCxqxQ3MY_Pv1PplLAqp2O8>
Subject: Re: [Lsr] Working Group Last Call for draft-ietf-lsr-isis-rfc5306bis-00 - Restart Signaling for IS-IS
X-BeenThere: lsr@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Link State Routing Working Group <lsr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/lsr>, <mailto:lsr-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/lsr/>
List-Post: <mailto:lsr@ietf.org>
List-Help: <mailto:lsr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/lsr>, <mailto:lsr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 20 Nov 2018 01:57:57 -0000

Obviously as co-author I support this.
This modest extension makes IS-IS GR usable for platforms which cannot reload within the normal adjacency hold-time. It also allows the helping neighbors to be aware that they have a restarting neighbor in case topology changes occur which would compromise the restarting node’s forwarding plane while the restart is in progress.

This achieves parity w functionality which has existed in OSPF for many years.

It does NOT introduce interoperability issues w legacy nodes – though until the neighbors of the restarting node support this new functionality the benefits of the extension will not be realized.

   Les


From: Lsr <lsr-bounces@ietf.org> On Behalf Of Acee Lindem (acee)
Sent: Monday, November 19, 2018 2:22 PM
To: lsr@ietf.org
Subject: [Lsr] Working Group Last Call for draft-ietf-lsr-isis-rfc5306bis-00 - Restart Signaling for IS-IS

The begins a Working Group Last Call for the subject document. Please post for review comments and/or support/objection to this document before 12:00 AM UTC on Tuesday, December 4th, 2018.

Other than some RFC boiler plate changes, the RFC 5306 BIS document really only adds the PR/PA bit handling in section 2.2.3 and the addition of the Planned Restart State to sections 3.1 and 3.2.

Thanks,
Acee

v2.23.0 | Report a Bug | By Email