Browse Prior Art Database

Signaled Preemption Priority Policy Element (RFC2751)

IP.com Disclosure Number: IPCOM000003348D
Original Publication Date: 2000-Jan-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 9 page(s) / 20K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Herzog: AUTHOR

Abstract

This document describes a preemption priority policy element for use by signaled policy based admission protocols (such as [RSVP] and [COPS]).

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 14% of the total text.

Network Working Group S. Herzog

Request for Comments: 2751 IPHighway

Category: Standards Track January 2000

Signaled Preemption Priority Policy Element

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2000). All Rights Reserved.

Abstract

This document describes a preemption priority policy element for use

by signaled policy based admission protocols (such as [RSVP] and

[COPS]).

Preemption priority defines a relative importance (rank) within the

set of flows competing to be admitted into the network. Rather than

admitting flows by order of arrival (First Come First Admitted)

network nodes may consider priorities to preempt some previously

admitted low priority flows in order to make room for a newer, high-

priority flow.

Table of Contents

1 Introduction .....................................................2

2 Scope and Applicability ..........................................3

3 Stateless Policy .................................................3

4 Policy Element Format ............................................4

5 Priority Merging Issues ..........................................5

5.1 Priority Merging Strategies ...................................6

5.1.1 Take priority of highest QoS .................................6

5.1.2 Take highest priority ........................................7

5.1.3 Force error on heterogeneous merge ...........................7

5.2 Modifying Priority Elements ...................................7

6 Error Processing .................................................8

7 IANA Considerations ..............................................8

8 Security Considerations ..........................................8

9 References .......................................................9

10 Author Information .............................................9

Appendix A: Example ...............................................10

A.1 Computing Merged Priority ....................................10

A.2 Translation (Compression) of Priority Elements ...............11

Full Copyright Statement ..........................................12

1 Introduction

Traditional ...