Diff: draft-ietf-ospf-ospfv3-lsa-extend-12.txt - draft-ietf-ospf-ospfv3-lsa-extend-13.txt

	< draft-ietf-ospf-ospfv3-lsa-extend-12.txt	draft-ietf-ospf-ospfv3-lsa-extend-13.txt >

	Network Working Group A. Lindem	Network Working Group A. Lindem
	Internet-Draft S. Mirtorabi	Internet-Draft S. Mirtorabi
	Intended status: Standards Track A. Roy	Intended status: Standards Track A. Roy

	Expires: March 30, 2017 Cisco Systems	Expires: April 24, 2017 Cisco Systems
	F. Baker	F. Baker


	September 26, 2016	October 21, 2016

	OSPFv3 LSA Extendibility	OSPFv3 LSA Extendibility

	draft-ietf-ospf-ospfv3-lsa-extend-12.txt	draft-ietf-ospf-ospfv3-lsa-extend-13.txt

	Abstract	Abstract

	OSPFv3 requires functional extension beyond what can readily be done	OSPFv3 requires functional extension beyond what can readily be done
	with the fixed-format Link State Advertisement (LSA) as described in	with the fixed-format Link State Advertisement (LSA) as described in
	RFC 5340. Without LSA extension, attributes associated with OSPFv3	RFC 5340. Without LSA extension, attributes associated with OSPFv3
	links and advertised IPv6 prefixes must be advertised in separate	links and advertised IPv6 prefixes must be advertised in separate
	LSAs and correlated to the fixed-format LSAs. This document extends	LSAs and correlated to the fixed-format LSAs. This document extends
	the LSA format by encoding the existing OSPFv3 LSA information in	the LSA format by encoding the existing OSPFv3 LSA information in
	Type-Length-Value (TLV) tuples and allowing advertisement of	Type-Length-Value (TLV) tuples and allowing advertisement of

	skipping to change at page 1, line 41 ¶	skipping to change at page 1, line 41 ¶
	Internet-Drafts are working documents of the Internet Engineering	Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute	Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-	working documents as Internet-Drafts. The list of current Internet-
	Drafts is at http://datatracker.ietf.org/drafts/current/.	Drafts is at http://datatracker.ietf.org/drafts/current/.

	Internet-Drafts are draft documents valid for a maximum of six months	Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any	and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference	time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."	material or to cite them other than as "work in progress."


	This Internet-Draft will expire on March 30, 2017.	This Internet-Draft will expire on April 24, 2017.

	Copyright Notice	Copyright Notice

	Copyright (c) 2016 IETF Trust and the persons identified as the	Copyright (c) 2016 IETF Trust and the persons identified as the
	document authors. All rights reserved.	document authors. All rights reserved.

	This document is subject to BCP 78 and the IETF Trust's Legal	This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents	Provisions Relating to IETF Documents
	(http://trustee.ietf.org/license-info) in effect on the date of	(http://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents	publication of this document. Please review these documents

	skipping to change at page 4, line 36 ¶	skipping to change at page 4, line 36 ¶
	Przygienda for review of the draft versions and discussions of	Przygienda for review of the draft versions and discussions of
	backward compatibility.	backward compatibility.

	Thanks to Alan Davey for review and comments including the suggestion	Thanks to Alan Davey for review and comments including the suggestion
	to separate the extended LSA TLV definitions from the extended LSAs	to separate the extended LSA TLV definitions from the extended LSAs
	definitions.	definitions.

	Thanks to David Lamparter for review and suggestions on backward	Thanks to David Lamparter for review and suggestions on backward
	compatibility.	compatibility.


	Thanks to Karsten Thomann and Chris Bowers for review and editorial	Thanks to Karsten Thomann, Chris Bowers, and Meng Zhang for review
	comments.	and editorial comments.

	The RFC text was produced using Marshall Rose's xml2rfc tool.	The RFC text was produced using Marshall Rose's xml2rfc tool.

	2. OSPFv3 Extended LSA Types	2. OSPFv3 Extended LSA Types

	In order to provide backward compatibility, new LSA codes must be	In order to provide backward compatibility, new LSA codes must be
	allocated. There are eight fixed-format LSAs defined in RFC 5340	allocated. There are eight fixed-format LSAs defined in RFC 5340
	[OSPFV3]. For ease of implementation and debugging, the LSA function	[OSPFV3]. For ease of implementation and debugging, the LSA function
	codes are the same as the fixed-format LSAs only with 32, i.e., 0x20,	codes are the same as the fixed-format LSAs only with 32, i.e., 0x20,
	added. The alternative to this mapping was to allocate a bit in the	added. The alternative to this mapping was to allocate a bit in the

	skipping to change at page 12, line 7 ¶	skipping to change at page 12, line 7 ¶
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	. .	. .
	. sub-TLVs .	. sub-TLVs .
	. .	. .
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

	Inter-Area Router TLV	Inter-Area Router TLV

	3.6. External-Prefix TLV	3.6. External-Prefix TLV


	The External-Prefix TLV defines a single OSPFv3 external prefix. The	The External-Prefix TLV defines a single OSPFv3 external prefix.
	field definitions correspond directly to the content of an OSPFv3	With the exception of omitted fields noted below, the field
	IPv6 Prefix as defined in Section A.4.1, [OSPFV3] and an OSPFv3 AS-	definitions correspond directly to the content of an OSPFv3 IPv6
		Prefix as defined in Section A.4.1, [OSPFV3] and an OSPFv3 AS-
	External-LSA, as defined in section A.4.7, [OSPFV3]. The External-	External-LSA, as defined in section A.4.7, [OSPFV3]. The External-
	Prefix TLV is only applicable to the E-AS-External-LSA (Section 4.5)	Prefix TLV is only applicable to the E-AS-External-LSA (Section 4.5)
	and the E-NSSA-LSA (Section 4.6). Additionally, the PrefixOptions	and the E-NSSA-LSA (Section 4.6). Additionally, the PrefixOptions
	are extended as described in Section 3.1. Inclusion in other	are extended as described in Section 3.1. Inclusion in other
	Extended LSAs MUST be ignored.	Extended LSAs MUST be ignored.

	0 1 2 3	0 1 2 3
	0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1	0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+	+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	\| 5 (External Prefix) \| TLV Length \|	\| 5 (External Prefix) \| TLV Length \|

End of changes. 6 change blocks.
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