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Advertising a Router's Local Addresses in OSPF Traffic Engineering (TE) Extensions
RFC 5786

Document type: RFC - Proposed Standard (March 2010; Errata)
Updated by RFC 6827
Updates RFC 3630
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC 5786 (Proposed Standard)
Responsible AD: Ross Callon
Send notices to: ospf-chairs@tools.ietf.org, draft-ietf-ospf-te-node-addr@tools.ietf.org

Internet Engineering Task Force (IETF)                       R. Aggarwal
Request for Comments: 5786                                   K. Kompella
Updates: 3630                                           Juniper Networks
Category: Standards Track                                     March 2010
ISSN: 2070-1721

                 Advertising a Router's Local Addresses
              in OSPF Traffic Engineering (TE) Extensions

Abstract

   OSPF Traffic Engineering (TE) extensions are used to advertise TE
   Link State Advertisements (LSAs) containing information about TE-
   enabled links.  The only addresses belonging to a router that are
   advertised in TE LSAs are the local addresses corresponding to TE-
   enabled links, and the local address corresponding to the Router ID.

   In order to allow other routers in a network to compute Multiprotocol
   Label Switching (MPLS) Traffic Engineered Label Switched Paths (TE
   LSPs) to a given router's local addresses, those addresses must also
   be advertised by OSPF TE.

   This document describes procedures that enhance OSPF TE to advertise
   a router's local addresses.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in 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/rfc5786.

Aggarwal & Kompella          Standards Track                    [Page 1]
RFC 5786         Advertising a Local Router's Addresses       March 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.

Table of Contents

   1. Introduction ....................................................3
      1.1. Motivation .................................................3
   2. Specification of Requirements ...................................3
   3. Rejected Potential Solution .....................................4
   4. Solution ........................................................4
      4.1. Node Attribute TLV .........................................4
      4.2. Operation ..................................................5
   5. Security Considerations .........................................6
   6. IANA Considerations .............................................6
   7. Acknowledgements ................................................6
   8. References ......................................................7
      8.1. Normative References .......................................7
      8.2. Informative References .....................................7

Aggarwal & Kompella          Standards Track                    [Page 2]
RFC 5786         Advertising a Local Router's Addresses       March 2010

1.  Introduction

1.1.  Motivation

   In some cases, it is desirable to set up constrained shortest path
   first (CSPF) computed Multiprotocol Label Switching (MPLS) Traffic
   Engineered Label Switched Paths (TE LSPs) to local addresses of a
   router that are not currently advertised in the TE LSAs, i.e.,
   loopback and non-TE interface addresses.

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