draft-ietf-lsr-ip-flexalgo-01.txt		draft-ietf-lsr-ip-flexalgo-02.txt
	LSR Working Group W. Britto		LSR Working Group W. Britto
	Internet-Draft S. Hegde		Internet-Draft S. Hegde
	Intended status: Standards Track P. Kaneriya		Intended status: Standards Track P. Kaneriya
	Expires: October 29, 2021 R. Shetty		Expires: October 30, 2021 R. Shetty
	R. Bonica		R. Bonica
	Juniper Networks		Juniper Networks
	P. Psenak		P. Psenak
	Cisco Systems		Cisco Systems
	April 27, 2021		April 28, 2021
	IGP Flexible Algorithms (Flex-Algorithm) In IP Networks		IGP Flexible Algorithms (Flex-Algorithm) In IP Networks
	draft-ietf-lsr-ip-flexalgo-01		draft-ietf-lsr-ip-flexalgo-02
	Abstract		Abstract
	An IGP Flexible Algorithm (Flex-Algorithm) allows IGP to compute		An IGP Flexible Algorithm (Flex-Algorithm) allows IGP to compute
	constraint-based paths. As currently defined, IGP Flex-Algorithm is		constraint-based paths. As currently defined, IGP Flex-Algorithm is
	used with Segment Routing (SR) data planes - SR MPLS and SRv6.		used with Segment Routing (SR) data planes - SR MPLS and SRv6.
	Therefore, Flex-Algorithm cannot be deployed in the absence of SR.		Therefore, Flex-Algorithm cannot be deployed in the absence of SR.
	This document extends IGP Flex-Algorithm, so that it can be used for		This document extends IGP Flex-Algorithm, so that it can be used for
	regular IPv4 and IPv6 prefixes. This allows Flex-Algorithm to be		regular IPv4 and IPv6 prefixes. This allows Flex-Algorithm to be
	skipping to change at page 1, line 42 ¶		skipping to change at page 1, line 42 ¶
	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 October 29, 2021.		This Internet-Draft will expire on October 30, 2021.
	Copyright Notice		Copyright Notice
	Copyright (c) 2021 IETF Trust and the persons identified as the		Copyright (c) 2021 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
	skipping to change at page 14, line 8 ¶		skipping to change at page 14, line 8 ¶
	+-------+----------------------+---------------------------+		+-------+----------------------+---------------------------+
	| Value | TLV Name | Reference |		| Value | TLV Name | Reference |
	+-------+----------------------+---------------------------+		+-------+----------------------+---------------------------+
	| 29 | IP Algorithm Sub-TLV | This Document Section 5.1 |		| 29 | IP Algorithm Sub-TLV | This Document Section 5.1 |
	+-------+----------------------+---------------------------+		+-------+----------------------+---------------------------+
	This document also updates the "ISIS TLV Codepoints Registry"		This document also updates the "ISIS TLV Codepoints Registry"
	registry as follows:		registry as follows:
	+-------+----------------------------------+------------------------+		+-------+------------------+-----+-----+-----+-------+--------------+
	| Value | TLV Name | Reference |		| Value | TLV Name | IIH | LSP | SNP | Purge | Reference |
	+-------+----------------------------------+------------------------+		+-------+------------------+-----+-----+-----+-------+--------------+
	| 126 | IPv4 Algorithm Prefix | This document, |		| 126 | IPv4 Algorithm | N | Y | N | N | This |
	| | Reachability TLV | Section 6.1 |		| | Prefix | | | | | document, |
	| 127 | IPv6 Algorithm Prefix | This document, |		| | Reachability TLV | | | | | Section 6.1 |
	| | Reachability TLV | Section 6.2 |		| 127 | IPv6 Algorithm | N | Y | N | N | This |
	+-------+----------------------------------+------------------------+		| | Prefix | | | | | document, |
			| | Reachability TLV | | | | | Section 6.2 |
			+-------+------------------+-----+-----+-----+-------+--------------+
	This document updates the "OSPFv2 Extended Prefix Opaque LSA TLVs"		This document updates the "OSPFv2 Extended Prefix Opaque LSA TLVs"
	registry as follows::		registry as follows::
	+-------+----------------------------------+------------------------+		+-------+----------------------------------+------------------------+
	| Value | TLV Name | Reference |		| Value | TLV Name | Reference |
	+-------+----------------------------------+------------------------+		+-------+----------------------------------+------------------------+
	| TBD | OSPFv2 Algorithm Prefix | This Document, |		| TBD | OSPFv2 Algorithm Prefix | This Document, |
	| | Reachability TLV | Section 6.1 |		| | Reachability TLV | Section 6.1 |
	+-------+----------------------------------+------------------------+		+-------+----------------------------------+------------------------+
	skipping to change at page 14, line 42 ¶		skipping to change at page 14, line 44 ¶
	TBD.		TBD.
	14. References		14. References
	14.1. Normative References		14.1. Normative References
	[I-D.ietf-lsr-flex-algo]		[I-D.ietf-lsr-flex-algo]
	Psenak, P., Hegde, S., Filsfils, C., Talaulikar, K., and		Psenak, P., Hegde, S., Filsfils, C., Talaulikar, K., and
	A. Gulko, "IGP Flexible Algorithm", draft-ietf-lsr-flex-		A. Gulko, "IGP Flexible Algorithm", draft-ietf-lsr-flex-
	algo-13 (work in progress), October 2020.		algo-14 (work in progress), February 2021.
	[ISO10589]		[ISO10589]
	IANA, "Intermediate system to Intermediate system routing		IANA, "Intermediate system to Intermediate system routing
	information exchange protocol for use in conjunction with		information exchange protocol for use in conjunction with
	the Protocol for providing the Connectionless-mode Network		the Protocol for providing the Connectionless-mode Network
	Service (ISO 8473)", August 1987, <ISO/IEC 10589:2002>.		Service (ISO 8473)", August 1987, <ISO/IEC 10589:2002>.
	[RFC0791] Postel, J., "Internet Protocol", STD 5, RFC 791,		[RFC0791] Postel, J., "Internet Protocol", STD 5, RFC 791,
	DOI 10.17487/RFC0791, September 1981,		DOI 10.17487/RFC0791, September 1981,
	<https://www.rfc-editor.org/info/rfc791>.		<https://www.rfc-editor.org/info/rfc791>.
End of changes. 6 change blocks.
	13 lines changed or deleted		15 lines changed or added
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