A Framework for QoS-based Routing in the Internet (RFC2386)
Original Publication Date: 1998-Aug-01
Included in the Prior Art Database: 2019-Feb-15
Internet Society Requests For Comment (RFCs)
E. Crawley: AUTHOR [+3]
This document describes some of the QoS-based routing issues and requirements, and proposes a framework for QoS-based routing in the Internet. This memo provides information for the Internet community. It does not specify an Internet standard of any kind.
Network Working Group E. Crawley Request for Comments: 2386 Argon Networks Category: Informational R. Nair Arrowpoint B. Rajagopalan NEC USA H. Sandick Bay Networks August 1998
A Framework for QoS-based Routing in the Internet
Status of this Memo
This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.
Copyright (C) The Internet Society (1998). All Rights Reserved.
QoS-based routing has been recognized as a missing piece in the evolution of QoS-based service offerings in the Internet. This document describes some of the QoS-based routing issues and requirements, and proposes a framework for QoS-based routing in the Internet. This framework is based on extending the current Internet routing model of intra and interdomain routing to support QoS.
1. SCOPE OF DOCUMENT & PHILOSOPHY
This document proposes a framework for QoS-based routing, with the objective of fostering the development of an Internet-wide solution while encouraging innovations in solving the many problems that arise. QoS-based routing has many complex facets and it is recommended that the following two-pronged approach be employed towards its development:
1. Encourage the growth and evolution of novel intradomain QoS-based routing architectures. This is to allow the development of independent, innovative solutions that address the many QoS-based routing issues. Such solutions may be deployed in autonomous systems (ASs), large and small, based on their specific needs.
Crawley, et. al. Informational [Page 1]
RFC 2386 A Framework for QoS-based Routing August 1998
2. Encourage simple, consistent and stable interactions between ASs implementing routing solutions developed as above.
This approach follows the traditional separation between intra and interdomain routing. It allows solutions like QOSPF [GKOP98, ZSSC97], Integrated PNNI [IPNNI] or other schemes to be deployed for intradomain routing without any restriction, other than their ability to interact with a common, and perhaps simple, interdomain routing protocol. The need to develop a single, all encompassing solution to the complex problem of QoS-based routing is therefore obviated. As a practical matter, there are many different views on how QoS-based routing should be done. Much overall progress can be made if an opportunity exists for various ideas to be developed and deployed concurrently, while some consensus on the interdomain routing architecture is being developed. Finally, this routing model is perhaps the most practical from an evolution point of view. It is superfluous to say that the eventual success of a QoS-based Internet routing architecture would depend on the ease of evolution.
The aim of this document is to describe the QoS-based routing issues, identify basic requirements on intra and interdomain routing, and describe an extension of the current interdomain routing model to support QoS. It...