draft-ietf-ospf-ospfv3-segment-routing-extensions-21.txt		draft-ietf-ospf-ospfv3-segment-routing-extensions-22.txt
	Open Shortest Path First IGP P. Psenak, Ed.		Open Shortest Path First IGP P. Psenak, Ed.
	Internet-Draft Cisco Systems, Inc.		Internet-Draft Cisco Systems, Inc.
	Intended status: Standards Track S. Previdi, Ed.		Intended status: Standards Track S. Previdi, Ed.
	Expires: June 17, 2019 Individual		Expires: July 6, 2019 Individual
	December 14, 2018		January 2, 2019
	OSPFv3 Extensions for Segment Routing		OSPFv3 Extensions for Segment Routing
	draft-ietf-ospf-ospfv3-segment-routing-extensions-21		draft-ietf-ospf-ospfv3-segment-routing-extensions-22
	Abstract		Abstract
	Segment Routing (SR) allows a flexible definition of end-to-end paths		Segment Routing (SR) allows a flexible definition of end-to-end paths
	within IGP topologies by encoding paths as sequences of topological		within IGP topologies by encoding paths as sequences of topological
	sub-paths, called "segments". These segments are advertised by the		sub-paths, called "segments". These segments are advertised by the
	link-state routing protocols (IS-IS and OSPF).		link-state routing protocols (IS-IS and OSPF).
	This draft describes the OSPFv3 extensions required for Segment		This draft describes the OSPFv3 extensions required for Segment
	Routing with MPLS data plane.		Routing with MPLS data plane.
	skipping to change at page 1, line 45 ¶		skipping to change at page 1, line 45 ¶
	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 https://datatracker.ietf.org/drafts/current/.		Drafts is at https://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 June 17, 2019.		This Internet-Draft will expire on July 6, 2019.
	Copyright Notice		Copyright Notice
	Copyright (c) 2018 IETF Trust and the persons identified as the		Copyright (c) 2019 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
	(https://trustee.ietf.org/license-info) in effect on the date of		(https://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
	carefully, as they describe your rights and restrictions with respect		carefully, as they describe your rights and restrictions with respect
	to this document. Code Components extracted from this document must		to this document. Code Components extracted from this document must
	include Simplified BSD License text as described in Section 4.e of		include Simplified BSD License text as described in Section 4.e of
	the Trust Legal Provisions and are provided without warranty as		the Trust Legal Provisions and are provided without warranty as
	skipping to change at page 5, line 20 ¶		skipping to change at page 5, line 20 ¶
	Segment Routing requires some additional router capabilities to be		Segment Routing requires some additional router capabilities to be
	advertised to other routers in the area.		advertised to other routers in the area.
	These SR capabilities are advertised in the OSPFv3 Router Information		These SR capabilities are advertised in the OSPFv3 Router Information
	Opaque LSA (defined in [RFC7770]) and specified in		Opaque LSA (defined in [RFC7770]) and specified in
	[I-D.ietf-ospf-segment-routing-extensions].		[I-D.ietf-ospf-segment-routing-extensions].
	5. OSPFv3 Extended Prefix Range TLV		5. OSPFv3 Extended Prefix Range TLV
	In some cases it is useful to advertise attributes for a range of		In some cases it is useful to advertise attributes for a range of
	prefixes. The Segment Routing Mapping Server, which is described in		prefixes in a single advertisement. The Segment Routing Mapping
			Server, which is described in
	[I-D.ietf-spring-segment-routing-ldp-interop], is an example of where		[I-D.ietf-spring-segment-routing-ldp-interop], is an example of where
	a single advertisement is needed to advertise SIDs for multiple		SIDs for multiple prefixes can be advertised. To optimize such
	prefixes from a contiguous address range.		advertisement in case of multiple prefixes from a contiguous address
			range, OSPFv3 Extended Prefix Range TLV is defined."
	The OSPFv3 Extended Prefix Range TLV is defined for this purpose.
	The OSPFv3 Extended Prefix Range TLV is a top-level TLV of the		The OSPFv3 Extended Prefix Range TLV is a top-level TLV of the
	following LSAs defined in [RFC8362]:		following LSAs defined in [RFC8362]:
	E-Intra-Area-Prefix-LSA		E-Intra-Area-Prefix-LSA
	E-Inter-Area-Prefix-LSA		E-Inter-Area-Prefix-LSA
	E-AS-External-LSA		E-AS-External-LSA
End of changes. 6 change blocks.
	10 lines changed or deleted		10 lines changed or added
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