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Generic Aggregate Resource ReSerVation Protocol (RSVP) Reservations
RFC 4860

Network Working Group                                     F. Le Faucheur
Request for Comments: 4860                                      B. Davie
Category: Standards Track                            Cisco Systems, Inc.
                                                                 P. Bose
                                                         Lockheed Martin
                                                             C. Christou
                                                            M. Davenport
                                                     Booz Allen Hamilton
                                                                May 2007

  Generic Aggregate Resource ReSerVation Protocol (RSVP) Reservations

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The IETF Trust (2007).

Abstract

   RFC 3175 defines aggregate Resource ReSerVation Protocol (RSVP)
   reservations allowing resources to be reserved in a Diffserv network
   for a given Per Hop Behavior (PHB), or given set of PHBs, from a
   given source to a given destination.  RFC 3175 also defines how end-
   to-end RSVP reservations can be aggregated onto such aggregate
   reservations when transiting through a Diffserv cloud.  There are
   situations where multiple such aggregate reservations are needed for
   the same source IP address, destination IP address, and PHB (or set
   of PHBs).  However, this is not supported by the aggregate
   reservations defined in RFC 3175.  In order to support this, the
   present document defines a more flexible type of aggregate RSVP
   reservations, referred to as generic aggregate reservation.  Multiple
   such generic aggregate reservations can be established for a given
   PHB (or set of PHBs) from a given source IP address to a given
   destination IP address.  The generic aggregate reservations may be
   used to aggregate end-to-end RSVP reservations.  This document also
   defines the procedures for such aggregation.  The generic aggregate
   reservations may also be used end-to-end directly by end-systems
   attached to a Diffserv network.

Le Faucheur, et al.         Standards Track                     [Page 1]
RFC 4860          Generic Aggregate RSVP Reservations           May 2007

Table of Contents

   1. Introduction ....................................................3
      1.1. Related IETF Documents .....................................6
      1.2. Organization of This Document ..............................6
      1.3. Requirements Language ......................................7
   2. Object Definition ...............................................7
      2.1. SESSION Class ..............................................8
      2.2. SESSION-OF-INTEREST (SOI) Class ...........................11
   3. Processing Rules for Handling Generic Aggregate RSVP
      Reservations ...................................................13
      3.1. Extensions to Path and Resv Processing ....................13
   4. Procedures for Aggregation over Generic Aggregate RSVP
      Reservations ...................................................14
   5. Example Usage Of Multiple Generic Aggregate Reservations
      per PHB from a Given Aggregator to a Given Deaggregator ........19
   6. Security Considerations ........................................21
   7. IANA Considerations ............................................24
   8. Acknowledgments ................................................25
   9. Normative References ...........................................26
   10. Informative References ........................................26
   Appendix A. Example Signaling Flow ................................28

Le Faucheur, et al.         Standards Track                     [Page 2]
RFC 4860          Generic Aggregate RSVP Reservations           May 2007

1.  Introduction

   [RSVP-AGG] defines RSVP aggregate reservations that allow resources
   to be reserved in a Diffserv network for a flow characterized by its
   3-tuple <source IP address, destination IP address, Diffserv Code
   Point>.

   [RSVP-AGG] also defines the procedures for aggregation of end-to-end
   (E2E) RSVP reservations onto such aggregate reservations when
   transiting through a Diffserv cloud.  Such aggregation is illustrated
   in Figure 1.  This document reuses the terminology defined in
   [RSVP-AGG].

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