NSIS Signaling Layer Protocol (NSLP) for Quality-of-Service Signaling
RFC 5974
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RFC - Experimental
(October 2010; No errata)
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Last updated |
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2015-10-14
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IETF
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plain text
pdf
html
bibtex
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WG state
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(None)
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No shepherd assigned
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IESG state |
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RFC 5974 (Experimental)
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Consensus Boilerplate |
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Unknown
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Responsible AD |
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Magnus Westerlund
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(None)
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Internet Engineering Task Force (IETF) J. Manner
Request for Comments: 5974 Aalto University
Category: Experimental G. Karagiannis
ISSN: 2070-1721 University of Twente/Ericsson
A. McDonald
Roke
October 2010
NSIS Signaling Layer Protocol (NSLP) for Quality-of-Service Signaling
Abstract
This specification describes the NSIS Signaling Layer Protocol (NSLP)
for signaling Quality of Service (QoS) reservations in the Internet.
It is in accordance with the framework and requirements developed in
NSIS. Together with General Internet Signaling Transport (GIST), it
provides functionality similar to RSVP and extends it. The QoS NSLP
is independent of the underlying QoS specification or architecture
and provides support for different reservation models. It is
simplified by the elimination of support for multicast flows. This
specification explains the overall protocol approach, describes the
design decisions made, and provides examples. It specifies object,
message formats, and processing rules.
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/rfc5974.
Manner, et al. Experimental [Page 1]
RFC 5974 QoS NSLP 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 . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Protocol Overview . . . . . . . . . . . . . . . . . . . . . . 6
3.1. Overall Approach . . . . . . . . . . . . . . . . . . . . . 6
3.1.1. Protocol Messages . . . . . . . . . . . . . . . . . . 9
3.1.2. QoS Models and QoS Specifications . . . . . . . . . . 10
3.1.3. Policy Control . . . . . . . . . . . . . . . . . . . . 12
3.2. Design Background . . . . . . . . . . . . . . . . . . . . 13
3.2.1. Soft States . . . . . . . . . . . . . . . . . . . . . 13
3.2.2. Sender and Receiver Initiation . . . . . . . . . . . . 13
3.2.3. Protection against Message Re-ordering and
Duplication . . . . . . . . . . . . . . . . . . . . . 14
3.2.4. Explicit Confirmations . . . . . . . . . . . . . . . . 14
3.2.5. Reduced Refreshes . . . . . . . . . . . . . . . . . . 14
3.2.6. Summary Refreshes and Summary Tear . . . . . . . . . . 15
3.2.7. Message Scoping . . . . . . . . . . . . . . . . . . . 15
3.2.8. Session Binding . . . . . . . . . . . . . . . . . . . 16
3.2.9. Message Binding . . . . . . . . . . . . . . . . . . . 16
3.2.10. Layering . . . . . . . . . . . . . . . . . . . . . . . 17
3.2.11. Support for Request Priorities . . . . . . . . . . . . 18
3.2.12. Rerouting . . . . . . . . . . . . . . . . . . . . . . 19
3.2.13. Preemption . . . . . . . . . . . . . . . . . . . . . . 24
3.3. GIST Interactions . . . . . . . . . . . . . . . . . . . . 24
3.3.1. Support for Bypassing Intermediate Nodes . . . . . . . 25
3.3.2. Support for Peer Change Identification . . . . . . . . 25
3.3.3. Support for Stateless Operation . . . . . . . . . . . 26
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