draft-ietf-mpls-lsp-ping-lag-multipath-00.txt		draft-ietf-mpls-lsp-ping-lag-multipath-01.txt
	Internet Engineering Task Force N. Akiya		Internet Engineering Task Force N. Akiya
	Internet-Draft G. Swallow		Internet-Draft Big Switch Networks
	Updates: 4379,6424 (if approved) Cisco Systems		Updates: 4379,6424 (if approved) G. Swallow
	Intended status: Standards Track S. Litkowski		Intended status: Standards Track Cisco Systems
	Expires: July 12, 2015 B. Decraene		Expires: January 24, 2016 S. Litkowski
			B. Decraene
	Orange		Orange
	J. Drake		J. Drake
	Juniper Networks		Juniper Networks
	January 8, 2015		July 23, 2015
	Label Switched Path (LSP) Ping/Trace Multipath Support for		Label Switched Path (LSP) Ping/Trace Multipath Support for
	Link Aggregation Group (LAG) Interfaces		Link Aggregation Group (LAG) Interfaces
	draft-ietf-mpls-lsp-ping-lag-multipath-00		draft-ietf-mpls-lsp-ping-lag-multipath-01
	Abstract		Abstract
	This document defines an extension to the MPLS Label Switched Path		This document defines an extension to the MPLS Label Switched Path
	(LSP) Ping and Traceroute as specified in RFC 4379. The extension		(LSP) Ping and Traceroute as specified in RFC 4379. The extension
	allows the MPLS LSP Ping and Traceroute to discover and exercise		allows the MPLS LSP Ping and Traceroute to discover and exercise
	specific paths of Layer 2 (L2) Equal-Cost Multipath (ECMP) over Link		specific paths of Layer 2 (L2) Equal-Cost Multipath (ECMP) over Link
	Aggregation Group (LAG) interfaces.		Aggregation Group (LAG) interfaces.
	This document updates RFC4379 and RFC6424.		This document updates RFC4379 and RFC6424.
	skipping to change at page 1, line 48		skipping to change at page 1, line 49
	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 July 12, 2015.		This Internet-Draft will expire on January 24, 2016.
	Copyright Notice		Copyright Notice
	Copyright (c) 2015 IETF Trust and the persons identified as the		Copyright (c) 2015 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 3, line 13		skipping to change at page 3, line 13
	12.4. Detailed Interface and Label Stack TLV . . . . . . . . . 23		12.4. Detailed Interface and Label Stack TLV . . . . . . . . . 23
	12.4.1. Sub-TLVs for TLV Type TBD4 . . . . . . . . . . . . . 24		12.4.1. Sub-TLVs for TLV Type TBD4 . . . . . . . . . . . . . 24
	12.5. DS Flags . . . . . . . . . . . . . . . . . . . . . . . . 24		12.5. DS Flags . . . . . . . . . . . . . . . . . . . . . . . . 24
	13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 24		13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 24
	14. References . . . . . . . . . . . . . . . . . . . . . . . . . 25		14. References . . . . . . . . . . . . . . . . . . . . . . . . . 25
	14.1. Normative References . . . . . . . . . . . . . . . . . . 25		14.1. Normative References . . . . . . . . . . . . . . . . . . 25
	14.2. Informative References . . . . . . . . . . . . . . . . . 25		14.2. Informative References . . . . . . . . . . . . . . . . . 25
	Appendix A. LAG with L2 Switch Issues . . . . . . . . . . . . . 26		Appendix A. LAG with L2 Switch Issues . . . . . . . . . . . . . 26
	A.1. Equal Numbers of LAG Members . . . . . . . . . . . . . . 26		A.1. Equal Numbers of LAG Members . . . . . . . . . . . . . . 26
	A.2. Deviating Numbers of LAG Members . . . . . . . . . . . . 26		A.2. Deviating Numbers of LAG Members . . . . . . . . . . . . 26
	A.3. LAG Only on Right . . . . . . . . . . . . . . . . . . . . 26		A.3. LAG Only on Right . . . . . . . . . . . . . . . . . . . . 27
	A.4. LAG Only on Left . . . . . . . . . . . . . . . . . . . . 27		A.4. LAG Only on Left . . . . . . . . . . . . . . . . . . . . 27
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 27		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 27
	1. Introduction		1. Introduction
	1.1. Terminology		1.1. Terminology
	The following acronyms/terms are used in this document:		The following acronyms/terms are used in this document:
	o MPLS - Multiprotocol Label Switching.		o MPLS - Multiprotocol Label Switching.
	skipping to change at page 24, line 39		skipping to change at page 24, line 39
	via Standards Action [RFC5226]. Assignments of Sub-Types in the		via Standards Action [RFC5226]. Assignments of Sub-Types in the
	experimental space is via Specification Required [RFC5226].		experimental space is via Specification Required [RFC5226].
	12.5. DS Flags		12.5. DS Flags
	The IANA is requested to assign a new bit number from the "DS flags"		The IANA is requested to assign a new bit number from the "DS flags"
	sub-registry from the "Multi-Protocol Label Switching (MPLS) Label		sub-registry from the "Multi-Protocol Label Switching (MPLS) Label
	Switched Paths (LSPs) Ping Parameters - TLVs" registry		Switched Paths (LSPs) Ping Parameters - TLVs" registry
	([IANA-MPLS-LSP-PING]).		([IANA-MPLS-LSP-PING]).
	Note: the "DS flags" sub-registry is created by		Note: the "DS flags" sub-registry is created by [RFC7537].
	[I-D.ietf-mpls-lsp-ping-registry].
	Bit number Name Reference		Bit number Name Reference
	---------- ---------------------------------------- ---------		---------- ---------------------------------------- ---------
	TBD5 G: LAG Description Indicator this document		TBD5 G: LAG Description Indicator this document
	13. Acknowledgements		13. Acknowledgements
	The authors would like to thank Nagendra Kumar and Sam Aldrin for		The authors would like to thank Nagendra Kumar and Sam Aldrin for
	providing useful comments and suggestions. The authors would like to		providing useful comments and suggestions. The authors would like to
	thank Loa Andersson for performing a detailed review and providing		thank Loa Andersson for performing a detailed review and providing
	skipping to change at page 25, line 18		skipping to change at page 25, line 18
	by Mach Chen to generalize and create the LSR Capability TLV was		by Mach Chen to generalize and create the LSR Capability TLV was
	tremendously helpful for this document and likely for future		tremendously helpful for this document and likely for future
	documents extending the MPLS LSP Ping and Traceroute mechanism. The		documents extending the MPLS LSP Ping and Traceroute mechanism. The
	suggestion by Yimin Shen to create two separate validation procedures		suggestion by Yimin Shen to create two separate validation procedures
	had a big impact to the contents of this document.		had a big impact to the contents of this document.
	14. References		14. References
	14.1. Normative References		14.1. Normative References
	[I-D.ietf-mpls-lsp-ping-registry]
	Decraene, B., Akiya, N., Pignataro, C., Andersson, L., and
	S. Aldrin, "IANA registries for LSP ping Code Points",
	draft-ietf-mpls-lsp-ping-registry-00 (work in progress),
	November 2014.
	[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate		[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
	Requirement Levels", BCP 14, RFC 2119, March 1997.		Requirement Levels", BCP 14, RFC 2119,
			DOI 10.17487/RFC2119, March 1997,
			<http://www.rfc-editor.org/info/rfc2119>.
	[RFC4379] Kompella, K. and G. Swallow, "Detecting Multi-Protocol		[RFC4379] Kompella, K. and G. Swallow, "Detecting Multi-Protocol
	Label Switched (MPLS) Data Plane Failures", RFC 4379,		Label Switched (MPLS) Data Plane Failures", RFC 4379,
	February 2006.		DOI 10.17487/RFC4379, February 2006,
			<http://www.rfc-editor.org/info/rfc4379>.
	[RFC6424] Bahadur, N., Kompella, K., and G. Swallow, "Mechanism for		[RFC6424] Bahadur, N., Kompella, K., and G. Swallow, "Mechanism for
	Performing Label Switched Path Ping (LSP Ping) over MPLS		Performing Label Switched Path Ping (LSP Ping) over MPLS
	Tunnels", RFC 6424, November 2011.		Tunnels", RFC 6424, DOI 10.17487/RFC6424, November 2011,
			<http://www.rfc-editor.org/info/rfc6424>.
			[RFC7537] Decraene, B., Akiya, N., Pignataro, C., Andersson, L., and
			S. Aldrin, "IANA Registries for LSP Ping Code Points",
			RFC 7537, DOI 10.17487/RFC7537, May 2015,
			<http://www.rfc-editor.org/info/rfc7537>.
	14.2. Informative References		14.2. Informative References
	[I-D.ietf-mpls-ipv6-only-gap]		[I-D.ietf-mpls-ipv6-only-gap]
	George, W. and C. Pignataro, "Gap Analysis for Operating		George, W. and C. Pignataro, "Gap Analysis for Operating
	IPv6-only MPLS Networks", draft-ietf-mpls-ipv6-only-gap-04		IPv6-only MPLS Networks", draft-ietf-mpls-ipv6-only-gap-04
	(work in progress), November 2014.		(work in progress), November 2014.
	[IANA-MPLS-LSP-PING]		[IANA-MPLS-LSP-PING]
	IANA, "Multi-Protocol Label Switching (MPLS) Label		IANA, "Multi-Protocol Label Switching (MPLS) Label
	skipping to change at page 26, line 7		skipping to change at page 26, line 12
	<http://www.iana.org/assignments/mpls-lsp-ping-parameters/		<http://www.iana.org/assignments/mpls-lsp-ping-parameters/
	mpls-lsp-ping-parameters.xhtml>.		mpls-lsp-ping-parameters.xhtml>.
	[IEEE802.1AX]		[IEEE802.1AX]
	IEEE Std. 802.1AX, "IEEE Standard for Local and		IEEE Std. 802.1AX, "IEEE Standard for Local and
	metropolitan area networks - Link Aggregation", November		metropolitan area networks - Link Aggregation", November
	2008.		2008.
	[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an		[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
	IANA Considerations Section in RFCs", BCP 26, RFC 5226,		IANA Considerations Section in RFCs", BCP 26, RFC 5226,
	May 2008.		DOI 10.17487/RFC5226, May 2008,
			<http://www.rfc-editor.org/info/rfc5226>.
	Appendix A. LAG with L2 Switch Issues		Appendix A. LAG with L2 Switch Issues
	Several flavors of "LAG with L2 switch" provisioning models are		Several flavors of "LAG with L2 switch" provisioning models are
	described in this section, with MPLS data plane ECMP traversal		described in this section, with MPLS data plane ECMP traversal
	validation issues with each.		validation issues with each.
	A.1. Equal Numbers of LAG Members		A.1. Equal Numbers of LAG Members
	R1 ==== S1 ==== R2		R1 ==== S1 ==== R2
	skipping to change at page 27, line 19		skipping to change at page 27, line 28
	MPLS echo request sender has knowledge of how to traverse both LAG		MPLS echo request sender has knowledge of how to traverse both LAG
	members from R1 to S1. However, both types of packets will terminate		members from R1 to S1. However, both types of packets will terminate
	on the non-LAG interface at R2. It becomes impossible for MPLS echo		on the non-LAG interface at R2. It becomes impossible for MPLS echo
	request sender to know that MPLS echo request messages intended to		request sender to know that MPLS echo request messages intended to
	traverse a specific LAG member from R1 to S1 did indeed traverse that		traverse a specific LAG member from R1 to S1 did indeed traverse that
	LAG member.		LAG member.
	Authors' Addresses		Authors' Addresses
	Nobo Akiya		Nobo Akiya
	Cisco Systems		Big Switch Networks
	Email: nobo@cisco.com		Email: nobo.akiya.dev@gmail.com
	George Swallow		George Swallow
	Cisco Systems		Cisco Systems
	Email: swallow@cisco.com		Email: swallow@cisco.com
	Stephane Litkowski		Stephane Litkowski
	Orange		Orange
	Email: stephane.litkowski@orange.com		Email: stephane.litkowski@orange.com
End of changes. 13 change blocks.
	22 lines changed or deleted		26 lines changed or added
This html diff was produced by rfcdiff 1.42. The latest version is available from http://tools.ietf.org/tools/rfcdiff/