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Versions: 00 01 02                                                      
Network Working Group                                       K. Ishiguro
Internet Draft                                         IP Infusion Inc.
Expiration Date: May 2003                                     T. Takada
                                                       IP Infusion Inc.
                                                           October 2002


            Traffic Engineering Extensions to OSPF version 3

               draft-ishiguro-ospf-ospfv3-traffic-00.txt


Status of this Memo

   This document is an Internet-Draft and is in full conformance with
   all provisions of Section 10 of RFC2026.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as ``work in progress.''

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt

   The list of Internet-Draft Shadow Directories can be accessed at
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Abstract

   This document describes extensions to the OSPF version 3 to support
   Traffic Engineering [RFC2702].  The OSPFv3 protocol is specified in
   [RFC2740].

   This document extends OSPFv3 protocol by specifying new LS type for
   exchanging traffic engineering information.  This document defines
   new TLV to [OSPFV2-TE] to make it work with IPv6 network.  Besides
   the new TLV, other TLV is completely same as [OSPFV2-TE].


1. Applicability




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   OSPFv3 has a very flexible mechanism for adding new LS type.  Even
   the implementation does not know the LS types, the LSA is properly
   flooded by LS type field.  This document add a new LSA type Traffic
   Engineering LSA to OSPFv3.

   For Traffic Engineering, this document use [OSPFV2-TE] as predefined
   TLV document.  Main purpose of this document is making [OSPFV2-TE]
   applicable to IPv6 network with minimum change.


2. Router Address TLV

   [OSPFV2-TE] defines Router Address TLV.  [OSPFV2-TE] said it is
   stable IP address of the advertising router and the address is always
   reachable.  For IPv6 network it is not real IP address neither it is
   not reachable.  The Router Address TLV is used to identify Router-
   LSA.  So in OSPFv3 it must be Router ID of the advertising router.
   It is much like Router ID TLV rather than Router Address TLV.  Router
   Address TLV can be used as it is using Router ID value for it.


3. Link TLV

   Almost Link TLV can be applied to OSPFv3.  Three sub-TLVs: Link ID,
   Local interface IP address and Remote interface IP address can't be
   used for OSPFv3.  To make it applicable three new sub-TLVs are
   defined.

     9  - Neighbor ID (8 octets)
     10 - Local Interface IPv6 Address (16N octets)
     11 - Remote Interface IPv6 Address (16N octets)


3.1 Neighbor ID

   In OSPFv2, Link ID is unique key to identify Network LSA.  In OSPFv3
   to identify Network LSA, the combination of Neighbor Interface ID and
   Neighbor Router ID is needed.  So new sub-TLV Neighbor ID is defined.

   The Neighbor ID sub-TLV is TLV type 9, and is 8 octets in length.  It
   contains 4 octet Neighbor Interface ID following 4 octet Neighbor
   Router ID.  Neighbor Interface ID and Neighbor Router ID value is
   same as described in [OSPFV3] A.4.3 Router-LSAs.


3.2 Local Interface IPv6 Address

   The Local Interface IPv6 Address sub-TLV specifies the IPv6



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   address(es) of the interface corresponding to this link.  If there
   are multiple local addresses on the link, they are all listed in this
   sub-TLV.  Link-local address should not be included in this sub-TLV.

   The Local Interface IPv6 Address sub-TLV is TLV type 10, and is 16N
   octets in length, where N is the number of local addresses.


3.3 Remote Interface IPv6 Address

   The Remote Interface IPv6 Address sub-TLV specifies the IPv6
   address(es) of the neighbor's interface corresponding to this link.
   This and the local address are used to discern multiple parallel
   links between systems.  If the Link Type of the link is Multiaccess,
   the Remote Interface IPv6 Address is set to ::.  Link-local address
   should not be included in this sub-TLV.

   The Remote Interface IPv6 Address sub-TLV is TLV type 11, and is 16N
   octets in length, where N is the number of neighbor addresses.


4. Traffic-Engineering-LSA

   New LS type Traffic-Engineering-LSA is defined as Area scope LSA.

   LSA function code  LS Type  Description
   --------------------------------------------------------------------
   10                 0x200a   Traffic-Engineering-LSA


5. Security Considerations

   Security issues are not discussed in this memo.


6. Reference

   [RFC2702]   RFC 2702, "Requirements for Traffic Engineering Over
               MPLS," D.  Awduche, J. Malcolm, J. Agogbua, M. O'Dell,
               and J. McManus, September 1999.

   [RFC2328]   Moy, J., "OSPF Version 2", RFC 2328, April 1998.

   [RFC2740]   R. Coltun, D. Ferguson, J.Moy, "OSPF for IPv6", RFC2740,
               December 1999.

   [OSPFV2-TE] Katz, D., Yeung, D., Kompella, K., "Traffic Engineering
               Extensions to OSPF",



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Internet Draft  draft-ishiguro-ospf-ospfv3-traffic-00.txt September 2002


               draft-katz-yeung-ospf-traffic-08.txt, work in progress.

7. Author's Address

   Kunihiro Ishiguro
   IP Infusion Inc.
   111 W. St. John Street, Suite 910
   San Jose CA 95113
   e-mail: kunihiro@ipinfusion.com

   Toshiaki Takada
   IP Infusion Inc.
   111 W. St. John Street, Suite 910
   San Jose CA 95113
   e-mail: takada@ipinfusion.com




































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