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)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| 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
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