draft-ietf-ippm-lmap-path-00.txt		draft-ietf-ippm-lmap-path-01.txt
	Network Working Group M. Bagnulo		Network Working Group M. Bagnulo
	Internet-Draft UC3M		Internet-Draft UC3M
	Intended status: Standards Track T. Burbridge		Intended status: Standards Track T. Burbridge
	Expires: January 09, 2014 BT		Expires: March 28, 2014 BT
	S. Crawford		S. Crawford
	SamKnows		SamKnows
	P. Eardley		P. Eardley
	BT		BT
	A. Morton		A. Morton
	AT&T Labs		AT&T Labs
	July 08, 2013		September 24, 2013
	A Reference Path and Measurement Points for LMAP		A Reference Path and Measurement Points for LMAP
	draft-ietf-ippm-lmap-path-00		draft-ietf-ippm-lmap-path-01
	Abstract		Abstract
	This document defines a reference path for Large-scale Measurement of		This document defines a reference path for Large-scale Measurement of
	Broadband Access Performance (LMAP) and measurement points for		Broadband Access Performance (LMAP) and measurement points for
	commonly used performance metrics.		commonly used performance metrics.
	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
	skipping to change at page 1, line 39		skipping to change at page 1, line 39
	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 January 09, 2014.		This Internet-Draft will expire on March 28, 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 23		skipping to change at page 2, line 23
	2. Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . 3		2. Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . 3
	3. Terms and Definitions . . . . . . . . . . . . . . . . . . . . 3		3. Terms and Definitions . . . . . . . . . . . . . . . . . . . . 3
	3.1. Reference Path . . . . . . . . . . . . . . . . . . . . . 3		3.1. Reference Path . . . . . . . . . . . . . . . . . . . . . 3
	3.2. Subscriber . . . . . . . . . . . . . . . . . . . . . . . 3		3.2. Subscriber . . . . . . . . . . . . . . . . . . . . . . . 3
	3.3. Dedicated Component (Links or Nodes) . . . . . . . . . . 4		3.3. Dedicated Component (Links or Nodes) . . . . . . . . . . 4
	3.4. Shared Component (Links or Nodes) . . . . . . . . . . . . 4		3.4. Shared Component (Links or Nodes) . . . . . . . . . . . . 4
	3.5. Resource Transition Point . . . . . . . . . . . . . . . . 4		3.5. Resource Transition Point . . . . . . . . . . . . . . . . 4
	4. Reference Path . . . . . . . . . . . . . . . . . . . . . . . 4		4. Reference Path . . . . . . . . . . . . . . . . . . . . . . . 4
	5. Measurement Points . . . . . . . . . . . . . . . . . . . . . 6		5. Measurement Points . . . . . . . . . . . . . . . . . . . . . 6
	6. Translation Between Ref. Path and Tech. X . . . . . . . . . . 7		6. Translation Between Ref. Path and Tech. X . . . . . . . . . . 7
	7. Security considerations . . . . . . . . . . . . . . . . . . . 9		7. Example Resource Transition . . . . . . . . . . . . . . . . . 9
	8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9		8. Security considerations . . . . . . . . . . . . . . . . . . . 10
	9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 9		9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
	10. References . . . . . . . . . . . . . . . . . . . . . . . . . 9		10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10
	10.1. Normative References . . . . . . . . . . . . . . . . . . 9		11. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
	10.2. Informative References . . . . . . . . . . . . . . . . . 10		11.1. Normative References . . . . . . . . . . . . . . . . . . 10
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10		11.2. Informative References . . . . . . . . . . . . . . . . . 11
			Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 11
	1. Introduction		1. Introduction
	This document defines a reference path for Large-scale Measurement of		This document defines a reference path for Large-scale Measurement of
	Broadband Access Performance (LMAP). The series of IP Performance		Broadband Access Performance (LMAP). The series of IP Performance
	Metrics (IPPM) RFCs have developed terms that are generally useful		Metrics (IPPM) RFCs have developed terms that are generally useful
	for path description (section 5 of [RFC2330]). There are a limited		for path description (section 5 of [RFC2330]). There are a limited
	number of additional terms needing definition here, and they will be		number of additional terms needing definition here, and they will be
	defined in this memo.		defined in this memo.
	skipping to change at page 4, line 4		skipping to change at page 4, line 4
	A reference path is a serial combination of routers, switches, links,		A reference path is a serial combination of routers, switches, links,
	radios, and processing elements that comprise all the network		radios, and processing elements that comprise all the network
	elements traversed by each packet between the source and destination		elements traversed by each packet between the source and destination
	hosts. The reference path is intended to be equally applicable to		hosts. The reference path is intended to be equally applicable to
	all networking technologies, therefore the components are generically		all networking technologies, therefore the components are generically
	defined, but their functions should have a clear counterpart or be		defined, but their functions should have a clear counterpart or be
	obviously omitted in any network technology.		obviously omitted in any network technology.
	3.2. Subscriber		3.2. Subscriber
	An entity possessing one or more hosts participating in an Internet		An entity (associated with one or more users) that is engaged in a
	access service.		subscription with a service provider. The subscriber is allowed to
			subscribe and un-subscribe services, and to register a user or a list
			of users authorized to enjoy these services. [Q1741] Both the
			subscriber and service provider are allowed to set the limits
			relative to the use that associated users make of subscribed
			services.
	3.3. Dedicated Component (Links or Nodes)		3.3. Dedicated Component (Links or Nodes)
	All resources of a Dedicated component (typically a link or node on		All resources of a Dedicated component (typically a link or node on
	the Reference Path) are allocated to serving the traffic of an		the Reference Path) are allocated to serving the traffic of an
	individual Subscriber. Resources include transmission time-slots,		individual Subscriber. Resources include transmission time-slots,
	queue space, processing for encapsulation and address/port		queue space, processing for encapsulation and address/port
	translation, and others. A Dedicated component can affect the		translation, and others. A Dedicated component can affect the
	performance of the Reference Path, or the performance of any sub-path		performance of the Reference Path, or the performance of any sub-path
	where the component is involved.		where the component is involved.
	skipping to change at page 9, line 9		skipping to change at page 9, line 21
	follows:		follows:
	Subsc. -- Private -- Private -- Access -- Intra IP -- GRA -- Transit		Subsc. -- Private -- Private -- Access -- Intra IP -- GRA -- Transit
	device Net #1 Net #2 Demarc. Access GW GRA GW		device Net #1 Net #2 Demarc. Access GW GRA GW
	mp000 mp100 mp150 mp190 mp200		mp000 mp100 mp150 mp190 mp200
	|--UE--|------------CPE/NAT--------|------|-CGN-|------|		|--UE--|------------CPE/NAT--------|------|-CGN-|------|
	|---Access Network--|		|---Access Network--|
	GRA = Globally Routable Address, GW = Gateway		GRA = Globally Routable Address, GW = Gateway
	7. Security considerations		7. Example Resource Transition
			This section gives an example of Shared and Dedicated portions with
			the reference path. This example shows two Resource Transition
			Points.
			Consider the case where:
			o The CPE is wired Residential GW and modem (Private Net#2)
			connected to a WiFi access point (Private Net#1). The Subscriber
			device (UE) attachs to the CPE though the WiFi access.
			o The Wi-Fi subnetwork (Private Net#1) shares unliscened radio
			channel resources with other W-Fi access networks (and potentially
			other sources of interference), thus this is a Shared portion of
			the path.
			o The wired subnetwork (Private Net#2) and a portion of the Access
			Network are Dedicated Resources (for a single Subscriber), thus
			there is a Resource Transition Point between (Private Net#1) and
			(Private Net#2).
			o Subscriber traffic shares common resources with other subscribers
			upon reaching the Carrier Grade NAT (CGN), thus there is a
			Resource Transition Point and further network components are
			designated as Shared Resources.
			We believe is becoming a fairly common configuration in parts of the
			world.
			This case would map into the defined reference measurement points as
			follows:
			Subsc. -- Private -- Private -- Access -- Intra IP -- GRA -- Transit
			device Net #1 Net #2 Demarc. Access GW GRA GW
			mp000 mp100 mp150 mp190 mp200
			|--UE--|------------CPE/NAT--------|------|-CGN-|------|
			Wi-Fi wired |---Access Network--|
			|-Shared--|RT|------Dedicated------| RT |-----Shared------...
			GRA = Globally Routable Address, GW = Gateway, RT = Resource
			Transition Point
			8. Security considerations
	Specification of a Reference Path and identification of measurement		Specification of a Reference Path and identification of measurement
	points on the path represent agreements among interested parties, and		points on the path represent agreements among interested parties, and
	they present no threat to the readers of this memo or to the Internet		they present no threat to the readers of this memo or to the Internet
	itself.		itself.
	8. IANA Considerations		9. IANA Considerations
	TBD		TBD
	9. Acknowledgements		10. Acknowledgements
	Thanks to Matt Mathis for review and comments.		Thanks to Matt Mathis for review and comments.
	10. References		11. References
	10.1. Normative References		11.1. Normative References
	[RFC2330] Paxson, V., Almes, G., Mahdavi, J., and M. Mathis,		[RFC2330] Paxson, V., Almes, G., Mahdavi, J., and M. Mathis,
	"Framework for IP Performance Metrics", RFC 2330, May		"Framework for IP Performance Metrics", RFC 2330, May
	1998.		1998.
	[RFC3432] Raisanen, V., Grotefeld, G., and A. Morton, "Network		[RFC3432] Raisanen, V., Grotefeld, G., and A. Morton, "Network
	performance measurement with periodic streams", RFC 3432,		performance measurement with periodic streams", RFC 3432,
	November 2002.		November 2002.
	[RFC2681] Almes, G., Kalidindi, S., and M. Zekauskas, "A Round-trip		[RFC2681] Almes, G., Kalidindi, S., and M. Zekauskas, "A Round-trip
	skipping to change at page 10, line 18		skipping to change at page 11, line 28
	[RFC3393] Demichelis, C. and P. Chimento, "IP Packet Delay Variation		[RFC3393] Demichelis, C. and P. Chimento, "IP Packet Delay Variation
	Metric for IP Performance Metrics (IPPM)", RFC 3393,		Metric for IP Performance Metrics (IPPM)", RFC 3393,
	November 2002.		November 2002.
	[RFC5481] Morton, A. and B. Claise, "Packet Delay Variation		[RFC5481] Morton, A. and B. Claise, "Packet Delay Variation
	Applicability Statement", RFC 5481, March 2009.		Applicability Statement", RFC 5481, March 2009.
	[RFC5835] Morton, A. and S. Van den Berghe, "Framework for Metric		[RFC5835] Morton, A. and S. Van den Berghe, "Framework for Metric
	Composition", RFC 5835, April 2010.		Composition", RFC 5835, April 2010.
	10.2. Informative References		11.2. Informative References
	[RFC4148] Stephan, E., "IP Performance Metrics (IPPM) Metrics		[RFC4148] Stephan, E., "IP Performance Metrics (IPPM) Metrics
	Registry", BCP 108, RFC 4148, August 2005.		Registry", BCP 108, RFC 4148, August 2005.
	[RFC6248] Morton, A., "RFC 4148 and the IP Performance Metrics		[RFC6248] Morton, A., "RFC 4148 and the IP Performance Metrics
	(IPPM) Registry of Metrics Are Obsolete", RFC 6248, April		(IPPM) Registry of Metrics Are Obsolete", RFC 6248, April
	2011.		2011.
	[SK] Crawford, Sam., "Test Methodology White Paper", SamKnows		[SK] Crawford, Sam., "Test Methodology White Paper", SamKnows
	Whitebox Briefing Note		Whitebox Briefing Note
	http://www.samknows.com/broadband/index.php, July 2011.		http://www.samknows.com/broadband/index.php, July 2011.
	Authors' Addresses		[Q1741] Q.1741.7, ., "IMT-2000 references to Release 9 of GSM-
			evolved UMTS core network",
			http://www.itu.int/rec/T-REC-Q.1741.7/en, November 2011.
			Authors' Addresses
	Marcelo Bagnulo		Marcelo Bagnulo
	Universidad Carlos III de Madrid		Universidad Carlos III de Madrid
	Av. Universidad 30		Av. Universidad 30
	Leganes, Madrid 28911		Leganes, Madrid 28911
	SPAIN		SPAIN
	Phone: 34 91 6249500		Phone: 34 91 6249500
	Email: marcelo@it.uc3m.es		Email: marcelo@it.uc3m.es
	URI: http://www.it.uc3m.es		URI: http://www.it.uc3m.es
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