< draft-ietf-6man-multicast-scopes-01.txt		draft-ietf-6man-multicast-scopes-02.txt >
	Internet Engineering Task Force R. Droms		Internet Engineering Task Force R. Droms
	Internet-Draft Cisco		Internet-Draft Cisco
	Updates: RFC 4291 (if approved) November 04, 2013		Updates: RFC 4007, RFC 4291 (if approved) November 11, 2013
	Intended status: Standards Track		Intended status: Standards Track
	Expires: May 08, 2014		Expires: May 15, 2014
	IPv6 Multicast Address Scopes		IPv6 Multicast Address Scopes
	draft-ietf-6man-multicast-scopes-01.txt		draft-ietf-6man-multicast-scopes-02.txt
	Abstract		Abstract
	This document updates the definitions of IPv6 multicast scopes.		This document updates the definitions of IPv6 multicast scopes.
	Status of This Memo		Status of This Memo
	This Internet-Draft is submitted in full conformance with the		This Internet-Draft is submitted in full conformance with the
	provisions of BCP 78 and BCP 79.		provisions of BCP 78 and BCP 79.
	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 May 08, 2014.		This Internet-Draft will expire on May 15, 2014.
	Copyright Notice		Copyright Notice
	Copyright (c) 2013 IETF Trust and the persons identified as the		Copyright (c) 2013 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 2, line 11 ¶		skipping to change at page 2, line 11 ¶
	described in the Simplified BSD License.		described in the Simplified BSD License.
	1. Definition of IPv6 Multicast Address Scopes (Updates RFC 4291)		1. Definition of IPv6 Multicast Address Scopes (Updates RFC 4291)
	RFC 4291 [RFC4291] defines "scop is a 4-bit multicast scope value		RFC 4291 [RFC4291] defines "scop is a 4-bit multicast scope value
	used to limit the scope of the multicast group." scop 3 is defined as		used to limit the scope of the multicast group." scop 3 is defined as
	"reserved" in RFC 4291. The multicast protocol specification in		"reserved" in RFC 4291. The multicast protocol specification in
	draft-ietf-roll-trickle-mcast [I-D.ietf-roll-trickle-mcast] desires		draft-ietf-roll-trickle-mcast [I-D.ietf-roll-trickle-mcast] desires
	to use multicast scop 3 for transport of multicast traffic scoped to		to use multicast scop 3 for transport of multicast traffic scoped to
	a network of nodes connected in a mesh. The use of this scop value		a network of nodes connected in a mesh. The use of this scop value
	is to accommodate a multicast scope that is greater than Link-Local		is to accommodate a multicast scope that is greater than Link-Local
	but is also automatically determined by the network architecture; for		but is also automatically determined by the network architecture.
	example, all of the hosts and routers in a multi-link subnet RPL
	realm.
	The following table updates the definitions in RFC 4291:		The following table updates the definitions in RFC 4291:
	0 reserved		0 reserved
	1 Interface-Local scope		1 Interface-Local scope
	2 Link-Local scope		2 Link-Local scope
	3 Realm-Local scope		3 Realm-Local scope
	skipping to change at page 3, line 40 ¶		skipping to change at page 3, line 38 ¶
	2. Definition of Realm-Local scopes		2. Definition of Realm-Local scopes
	The definition of any Realm-Local scope for a particular network		The definition of any Realm-Local scope for a particular network
	technology should be published in an RFC. For example, such a scope		technology should be published in an RFC. For example, such a scope
	definition would be appropriate for publication in an "IPv6-over-foo"		definition would be appropriate for publication in an "IPv6-over-foo"
	RFC.		RFC.
	Any RFCs that include the definition of a Realm-Local scope will be		Any RFCs that include the definition of a Realm-Local scope will be
	listed in the IANA "IPv6 Multicast Address Scopes" registry.		listed in the IANA "IPv6 Multicast Address Scopes" registry.
	3. Definition of automatic and administratively configures scopes		Section 4 gives the definition of scop 3 for IEEE 802.15.4
			[IEEE802.15.4] networks.
			3. Definition of automatic and administratively configured scopes
	(updates RFC 4007)		(updates RFC 4007)
	Section 5 of RFC 4007 [RFC4007] and section 2.7 of RFC 4291 disagree		Section 5 of RFC 4007 [RFC4007] and section 2.7 of RFC 4291 disagree
	about the way in which multicast scope 3 is configured. To resolve		about the way in which multicast scope 3 is configured. To resolve
	that disagreement, change the last bullet in the list in section 5 of		that disagreement, change the last bullet in the list in section 5 of
	RFC 4007 as follows:		RFC 4007 as follows:
	OLD:		OLD:
	o The boundaries of zones of a scope other than interface-local,		o The boundaries of zones of a scope other than interface-local,
	link-local, and global must be defined and configured by network		link-local, and global must be defined and configured by network
	administrators.		administrators.
	NEW:		NEW:
	o The boundaries of zones of a scope are defined by the IPv6		o The boundaries of zones of a scope are defined by the IPv6
	addressing architecture [RFC4291].		addressing architecture [RFC4291].
	4. IANA Considerations		4. Definition of Realm-Local Scope for IEEE 802.15.4
			When used in an IP-over-IEEE802.15.4 network, "scop 3" is defined to
			include all interfaces sharing a PAN ID.
			5. IANA Considerations
	IANA is asked to establish a sub-registry titled "IPv6 Multicast		IANA is asked to establish a sub-registry titled "IPv6 Multicast
	Address Scopes" in the existing "Internet Protocol version 6 (IPv6)		Address Scopes" in the existing "Internet Protocol version 6 (IPv6)
	Multicast Address Allocations" registry. The "IPv6 Multicast Address		Multicast Address Allocations" registry. The "IPv6 Multicast Address
	Scopes" is to be populated with the scope values given in section 1,		Scopes" is to be populated with the scope values given in section 1,
	with a note associated with scope 3 listing all RFCs that define		with a note associated with scope 3 listing all RFCs that define
	Realm-Local scoping rules that use scope 3.		Realm-Local scoping rules that use scope 3.
	5. Acknowledgments		6. Acknowledgments
	Robert Cragie, Kerry Lynn, Jinmei Tatuya, Dave Thaler and Stig Venaas		Robert Cragie, Kerry Lynn, Jinmei Tatuya, Dave Thaler and Stig Venaas
	all contributed to enuring that the updates to RFC 4007 and RFC 4291		all contributed text and/or review to ensure that the updates to RFC
	are correct		4007 and RFC 4291 are correct
	6. Security Considerations		7. Security Considerations
	This document has no security considerations beyond those in RFC 4291		This document has no security considerations beyond those in RFC 4291
	[RFC4291].		[RFC4291].
	7. References		8. References
	7.1. Normative References		8.1. Normative References
	[RFC4007] Deering, S., Haberman, B., Jinmei, T., Nordmark, E., and		[RFC4007] Deering, S., Haberman, B., Jinmei, T., Nordmark, E., and
	B. Zill, "IPv6 Scoped Address Architecture", RFC 4007,		B. Zill, "IPv6 Scoped Address Architecture", RFC 4007,
	March 2005.		March 2005.
	[RFC4291] Hinden, R. and S. Deering, "IP Version 6 Addressing		[RFC4291] Hinden, R. and S. Deering, "IP Version 6 Addressing
	Architecture", RFC 4291, February 2006.		Architecture", RFC 4291, February 2006.
	7.2. Informative References		8.2. Informative References
	[I-D.ietf-roll-trickle-mcast]		[I-D.ietf-roll-trickle-mcast]
	Hui, J. and R. Kelsey, "Multicast Protocol for Low power		Hui, J. and R. Kelsey, "Multicast Protocol for Low power
	and Lossy Networks (MPL)", draft-ietf-roll-trickle-		and Lossy Networks (MPL)", draft-ietf-roll-trickle-
	mcast-05 (work in progress), August 2013.		mcast-05 (work in progress), August 2013.
			[IEEE802.15.4]
			IEEE Std 802.15.4-2006, "IEEE Standard for Information
			technology - Telecommunications and information exchange
			between systems - Local and metropolitan area networks -
			Specific requirements; Part 15.4: Wireless Medium Access
			Control (MAC) and Physical Layer (PHY) Specifications for
			Low-Rate Wireless Personal Area Networks (WPANs)", October
			2006.
	Author's Address		Author's Address
	Ralph Droms		Ralph Droms
	Cisco		Cisco
	1414 Massachusetts Avenue		1414 Massachusetts Avenue
	Boxborough, MA 01719		Boxborough, MA 01719
	US		US
	Phone: +1 978 936 1674		Phone: +1 978 936 1674
	Email: rdroms@cisco.com		Email: rdroms@cisco.com
End of changes. 14 change blocks.
	16 lines changed or deleted		31 lines changed or added
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