--- 1/draft-ietf-ippm-lmap-path-00.txt 2013-09-24 10:14:25.322648840 -0700 +++ 2/draft-ietf-ippm-lmap-path-01.txt 2013-09-24 10:14:25.350649555 -0700 @@ -1,25 +1,25 @@ Network Working Group M. Bagnulo Internet-Draft UC3M Intended status: Standards Track T. Burbridge -Expires: January 09, 2014 BT +Expires: March 28, 2014 BT S. Crawford SamKnows P. Eardley BT A. Morton AT&T Labs - July 08, 2013 + September 24, 2013 A Reference Path and Measurement Points for LMAP - draft-ietf-ippm-lmap-path-00 + draft-ietf-ippm-lmap-path-01 Abstract This document defines a reference path for Large-scale Measurement of Broadband Access Performance (LMAP) and measurement points for commonly used performance metrics. Status of This Memo This Internet-Draft is submitted in full conformance with the @@ -28,21 +28,21 @@ Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference 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 (c) 2013 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents @@ -58,27 +58,28 @@ 2. Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . 3 3. Terms and Definitions . . . . . . . . . . . . . . . . . . . . 3 3.1. Reference Path . . . . . . . . . . . . . . . . . . . . . 3 3.2. Subscriber . . . . . . . . . . . . . . . . . . . . . . . 3 3.3. Dedicated Component (Links or Nodes) . . . . . . . . . . 4 3.4. Shared Component (Links or Nodes) . . . . . . . . . . . . 4 3.5. Resource Transition Point . . . . . . . . . . . . . . . . 4 4. Reference Path . . . . . . . . . . . . . . . . . . . . . . . 4 5. Measurement Points . . . . . . . . . . . . . . . . . . . . . 6 6. Translation Between Ref. Path and Tech. X . . . . . . . . . . 7 - 7. Security considerations . . . . . . . . . . . . . . . . . . . 9 - 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9 - 9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 9 - 10. References . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 10.1. Normative References . . . . . . . . . . . . . . . . . . 9 - 10.2. Informative References . . . . . . . . . . . . . . . . . 10 - Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10 + 7. Example Resource Transition . . . . . . . . . . . . . . . . . 9 + 8. Security considerations . . . . . . . . . . . . . . . . . . . 10 + 9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10 + 10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10 + 11. References . . . . . . . . . . . . . . . . . . . . . . . . . 10 + 11.1. Normative References . . . . . . . . . . . . . . . . . . 10 + 11.2. Informative References . . . . . . . . . . . . . . . . . 11 + Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 11 1. Introduction This document defines a reference path for Large-scale Measurement of Broadband Access Performance (LMAP). The series of IP Performance Metrics (IPPM) RFCs have developed terms that are generally useful for path description (section 5 of [RFC2330]). There are a limited number of additional terms needing definition here, and they will be defined in this memo. @@ -132,22 +133,27 @@ A reference path is a serial combination of routers, switches, links, radios, and processing elements that comprise all the network elements traversed by each packet between the source and destination hosts. The reference path is intended to be equally applicable to all networking technologies, therefore the components are generically defined, but their functions should have a clear counterpart or be obviously omitted in any network technology. 3.2. Subscriber - An entity possessing one or more hosts participating in an Internet - access service. + An entity (associated with one or more users) that is engaged in a + 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) All resources of a Dedicated component (typically a link or node on the Reference Path) are allocated to serving the traffic of an individual Subscriber. Resources include transmission time-slots, queue space, processing for encapsulation and address/port translation, and others. A Dedicated component can affect the performance of the Reference Path, or the performance of any sub-path where the component is involved. @@ -364,38 +370,82 @@ 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-|------| |---Access Network--| 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 points on the path represent agreements among interested parties, and they present no threat to the readers of this memo or to the Internet itself. -8. IANA Considerations +9. IANA Considerations TBD -9. Acknowledgements +10. Acknowledgements 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, "Framework for IP Performance Metrics", RFC 2330, May 1998. [RFC3432] Raisanen, V., Grotefeld, G., and A. Morton, "Network performance measurement with periodic streams", RFC 3432, November 2002. [RFC2681] Almes, G., Kalidindi, S., and M. Zekauskas, "A Round-trip @@ -420,35 +470,38 @@ [RFC3393] Demichelis, C. and P. Chimento, "IP Packet Delay Variation Metric for IP Performance Metrics (IPPM)", RFC 3393, November 2002. [RFC5481] Morton, A. and B. Claise, "Packet Delay Variation Applicability Statement", RFC 5481, March 2009. [RFC5835] Morton, A. and S. Van den Berghe, "Framework for Metric Composition", RFC 5835, April 2010. -10.2. Informative References +11.2. Informative References [RFC4148] Stephan, E., "IP Performance Metrics (IPPM) Metrics Registry", BCP 108, RFC 4148, August 2005. [RFC6248] Morton, A., "RFC 4148 and the IP Performance Metrics (IPPM) Registry of Metrics Are Obsolete", RFC 6248, April 2011. [SK] Crawford, Sam., "Test Methodology White Paper", SamKnows Whitebox Briefing Note 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 Universidad Carlos III de Madrid Av. Universidad 30 Leganes, Madrid 28911 SPAIN Phone: 34 91 6249500 Email: marcelo@it.uc3m.es URI: http://www.it.uc3m.es