RFC 2676 (rfc2676) - Page 1 of 50

QoS Routing Mechanisms and OSPF Extensions

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Network Working Group                                  G. Apostolopoulos
Request for Comments: 2676                                   D. Williams
Category: Experimental                                               IBM
                                                                S. Kamat
                                                                  Lucent
                                                               R. Guerin
                                                                   UPenn
                                                                 A. Orda
                                                                Technion
                                                           T. Przygienda
                                                           Siara Systems
                                                             August 1999


               QoS Routing Mechanisms and OSPF Extensions

Status of this Memo

   This memo defines an Experimental Protocol for the Internet
   community.  It does not specify an Internet standard of any kind.
   Discussion and suggestions for improvement are requested.
   Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

Abstract

   This memo describes extensions to the OSPF [Moy98] protocol to
   support QoS routes.  The focus of this document is on the algorithms
   used to compute QoS routes and on the necessary modifications to OSPF
   to support this function, e.g., the information needed, its format,
   how it is distributed, and how it is used by the QoS path selection
   process.  Aspects related to how QoS routes are established and
   managed are also briefly discussed.  The goal of this document is to
   identify a framework and possible approaches to allow deployment of
   QoS routing capabilities with the minimum possible impact to the
   existing routing infrastructure.

   In addition, experience from an implementation of the proposed
   extensions in the GateD environment [Con], along with performance
   measurements is presented.








Apostolopoulos, et al.        Experimental
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