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Requirements for Supporting Customer Resource ReSerVation Protocol (RSVP) and RSVP Traffic Engineering (RSVP-TE) over a BGP/MPLS IP-VPN
RFC 5824

Internet Engineering Task Force (IETF)                    K. Kumaki, Ed.
Request for Comments: 5824                              KDDI Corporation
Category: Informational                                         R. Zhang
ISSN: 2070-1721                                                       BT
                                                               Y. Kamite
                                          NTT Communications Corporation
                                                              April 2010

                      Requirements for Supporting
             Customer Resource ReSerVation Protocol (RSVP)
     and RSVP Traffic Engineering (RSVP-TE) over a BGP/MPLS IP-VPN

Abstract

   Today, customers expect to run triple-play services through BGP/MPLS
   IP-VPNs.  Some service providers will deploy services that request
   Quality of Service (QoS) guarantees from a local Customer Edge (CE)
   to a remote CE across the network.  As a result, the application
   (e.g., voice, video, bandwidth-guaranteed data pipe, etc.)
   requirements for an end-to-end QoS and reserving an adequate
   bandwidth continue to increase.

   Service providers can use both an MPLS and an MPLS Traffic
   Engineering (MPLS-TE) Label Switched Path (LSP) to meet their service
   objectives.  This document describes service-provider requirements
   for supporting a customer Resource ReSerVation Protocol (RSVP) and
   RSVP-TE over a BGP/MPLS IP-VPN.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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/rfc5824.

Kumaki, et al.                Informational                     [Page 1]
RFC 5824      Supporting RSVP/RSVP-TE over BGP/MPLS IP-VPN    April 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.

   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.

Kumaki, et al.                Informational                     [Page 2]
RFC 5824      Supporting RSVP/RSVP-TE over BGP/MPLS IP-VPN    April 2010

Table of Contents

   1. Introduction ....................................................4
   2. Requirements Language ...........................................4
   3. Terminology .....................................................5
   4. Problem Statement ...............................................5
   5. Application Scenarios ...........................................7
      5.1. Scenario I: Fast Recovery over BGP/MPLS IP-VPNs ............8
      5.2. Scenario II: Strict C-TE LSP QoS Guarantees ................8
      5.3. Scenario III: Load Balance of CE-to-CE Traffic .............9
      5.4. Scenario IV: RSVP Aggregation over MPLS-TE Tunnels ........11
      5.5. Scenario V: RSVP over Non-TE LSPs .........................12
      5.6. Scenario VI: RSVP-TE over Non-TE LSPs .....................13
   6. Detailed Requirements for C-TE LSP Model .......................14
      6.1. Selective P-TE LSPs .......................................14

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