NSIS Operation over IP Tunnels
RFC 5979
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Type |
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RFC - Experimental
(March 2011; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-shen-nsis-tunnel
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Stream |
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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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Document shepherd |
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No shepherd assigned
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| IESG |
IESG state |
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RFC 5979 (Experimental)
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Consensus Boilerplate |
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Unknown
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Telechat date |
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Responsible AD |
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Lars Eggert
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IESG note |
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The document shepherd is Jukka Manner (jukka.manner@tkk.fi).
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Send notices to |
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(None)
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Internet Engineering Task Force (IETF) C. Shen
Request for Comments: 5979 H. Schulzrinne
Category: Experimental Columbia U.
ISSN: 2070-1721 S. Lee
Samsung
J. Bang
Samsung AIT
March 2011
NSIS Operation over IP Tunnels
Abstract
NSIS Quality of Service (QoS) signaling enables applications to
perform QoS reservation along a data flow path. When the data flow
path contains IP tunnel segments, NSIS QoS signaling has no effect
within those tunnel segments. Therefore, the resulting tunnel
segments could become the weakest QoS link and invalidate the QoS
efforts in the rest of the end-to-end path. The problem with NSIS
signaling within the tunnel is caused by the tunnel encapsulation
that masks packets' original IP header fields. Those original IP
header fields are needed to intercept NSIS signaling messages and
classify QoS data packets. This document defines a solution to this
problem by mapping end-to-end QoS session requests to corresponding
QoS sessions in the tunnel, thus extending the end-to-end QoS
signaling into the IP tunnel segments.
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/rfc5979.
Shen, et al. Experimental [Page 1]
RFC 5979 NSIS Operation over IP Tunnels March 2011
Copyright Notice
Copyright (c) 2011 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.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Shen, et al. Experimental [Page 2]
RFC 5979 NSIS Operation over IP Tunnels March 2011
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Problem Statement . . . . . . . . . . . . . . . . . . . . . . 6
3.1. IP Tunneling Protocols . . . . . . . . . . . . . . . . . . 6
3.2. NSIS QoS Signaling in the Presence of IP Tunnels . . . . . 7
4. Design Overview . . . . . . . . . . . . . . . . . . . . . . . 10
4.1. Design Requirements . . . . . . . . . . . . . . . . . . . 10
4.2. Overall Design Approach . . . . . . . . . . . . . . . . . 11
4.3. Tunnel Flow ID for Different IP Tunneling Protocols . . . 13
5. NSIS Operation over Tunnels with Preconfigured QoS Sessions . 14
5.1. Sender-initiated Reservation . . . . . . . . . . . . . . . 14
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