RMD-QOSM: The NSIS Quality-of-Service Model for Resource Management in Diffserv
RFC 5977
Document | Type |
RFC - Experimental
(October 2010; No errata)
Was draft-ietf-nsis-rmd (nsis WG)
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Authors | Cornelia Kappler , Lars Westberg , Thomas Phelan , Georgios Karagiannis , Attila Bader | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5977 (Experimental) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Lars Eggert | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) A. Bader Request for Comments: 5977 L. Westberg Category: Experimental Ericsson ISSN: 2070-1721 G. Karagiannis University of Twente C. Kappler ck technology concepts T. Phelan Sonus October 2010 RMD-QOSM: The NSIS Quality-of-Service Model for Resource Management in Diffserv Abstract This document describes a Next Steps in Signaling (NSIS) Quality-of- Service (QoS) Model for networks that use the Resource Management in Diffserv (RMD) concept. RMD is a technique for adding admission control and preemption function to Differentiated Services (Diffserv) networks. The RMD QoS Model allows devices external to the RMD network to signal reservation requests to Edge nodes in the RMD network. The RMD Ingress Edge nodes classify the incoming flows into traffic classes and signals resource requests for the corresponding traffic class along the data path to the Egress Edge nodes for each flow. Egress nodes reconstitute the original requests and continue forwarding them along the data path towards the final destination. In addition, RMD defines notification functions to indicate overload situations within the domain to the Edge nodes. Status of This Memo This document is not an Internet Standards Track specification; it is published for examination, experimental implementation, and evaluation. This document defines an Experimental Protocol for the Internet community. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc5977. Bader, et al. Experimental [Page 1] RFC 5977 RMD-QOSM October 2010 Copyright Notice Copyright (c) 2010 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 carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction ....................................................4 2. Terminology .....................................................6 3. Overview of RMD and RMD-QOSM ....................................7 3.1. RMD ........................................................7 3.2. Basic Features of RMD-QOSM ................................10 3.2.1. Role of the QNEs ...................................10 3.2.2. RMD-QOSM/QoS-NSLP Signaling ........................11 3.2.3. RMD-QOSM Applicability and Considerations ..........13 4. RMD-QOSM, Detailed Description .................................15 4.1. RMD-QSPEC Definition ......................................16 4.1.1. RMD-QOSM <QoS Desired> and <QoS Reserved> ..........16 4.1.2. PHR Container ......................................17 4.1.3. PDR Container ......................................20 4.2. Message Format ............................................23 4.3. RMD Node State Management .................................23 4.3.1. Aggregated Operational and Reservation States at the QNE Edges ............................23 4.3.2. Measurement-Based Method ...........................25 4.3.3. Reservation-Based Method ...........................27 4.4. Transport of RMD-QOSM Messages ............................28 4.5. Edge Discovery and Message Addressing .....................31 4.6. Operation and Sequence of Events ..........................32Show full document text