Extensions to Generic Aggregate RSVP for IPv4 and IPv6 Reservations over Pre-Congestion Notification (PCN) Domains
RFC 7417

Document Type RFC - Experimental (December 2014; No errata)
Last updated 2015-10-14
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Document shepherd David Black
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IESG IESG state RFC 7417 (Experimental)
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Responsible AD Spencer Dawkins
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Internet Engineering Task Force (IETF)                    G. Karagiannis
Request for Comments: 7417                           Huawei Technologies
Category: Experimental                                       A. Bhargava
ISSN: 2070-1721                                      Cisco Systems, Inc.
                                                           December 2014

  Extensions to Generic Aggregate RSVP for IPv4 and IPv6 Reservations
             over Pre-Congestion Notification (PCN) Domains

Abstract

   This document specifies extensions to Generic Aggregate RSVP (RFC
   4860) for support of the Pre-Congestion Notification (PCN) Controlled
   Load (CL) and Single Marking (SM) edge behaviors over a Diffserv
   cloud using PCN.

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/rfc7417.

Karagiannis & Bhargava        Experimental                      [Page 1]
RFC 7417                 Aggregate RSVP over PCN           December 2014

Copyright Notice

   Copyright (c) 2014 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.

Karagiannis & Bhargava        Experimental                      [Page 2]
RFC 7417                 Aggregate RSVP over PCN           December 2014

Table of Contents

   1. Introduction ....................................................4
      1.1. Objective ..................................................4
      1.2. Overview and Motivation ....................................5
      1.3. Requirements Language and Terminology ......................8
      1.4. Organization of This Document .............................12
   2. Overview of RSVP Extensions and Operations .....................12
      2.1. Overview of RSVP Aggregation Procedures in PCN-Domains ....12
      2.2. PCN-Marking, Encoding, and Transport of
           Pre-congestion Information ................................14
      2.3. Traffic Classification within the Aggregation Region ......14
      2.4. Deaggregator (PCN-Egress-Node) Determination ..............15
      2.5. Mapping E2E Reservations onto Aggregate Reservations ......15
      2.6. Size of Aggregate Reservations ............................16
      2.7. E2E Path ADSPEC Update ....................................16
      2.8. Intra-domain Routes .......................................16
      2.9. Inter-domain Routes .......................................16
      2.10. Reservations for Multicast Sessions ......................16
      2.11. Multi-level Aggregation ..................................16
      2.12. Reliability Issues .......................................17
   3. Elements of Procedures .........................................17
      3.1. Receipt of E2E Path Message by PCN-Ingress-Node
           (Aggregating Router) ......................................17
      3.2. Handling of E2E Path Message by Interior Routers ..........17
      3.3. Receipt of E2E Path Message by PCN-Egress-Node
           (Deaggregating Router) ....................................18
      3.4. Initiation of New Aggregate Path Message by
           PCN-Ingress-Node (Aggregating Router) .....................18
      3.5. Handling of Aggregate Path Message by Interior Routers ....18
      3.6. Handling of Aggregate Path Message by
           Deaggregating Router ......................................18
      3.7. Handling of E2E Resv Message by Deaggregating Router ......19
      3.8. Handling of E2E Resv Message by Interior Routers ..........19
      3.9. Initiation of New Aggregate Resv Message by
           Deaggregating Router ......................................20
      3.10. Handling of Aggregate Resv Message by Interior Routers ...20
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