Cisco IOS XR Modular Quality of Service Configuration Guide for the Cisco CRS-1 Router
Preface
Downloads: This chapterpdf (PDF - 323.0KB) The complete bookPDF (PDF - 3.31MB) | Feedback

Preface

Table Of Contents

Preface

Changes to This Document

Obtaining Documentation and Submitting a Service Request


Preface


This document describes the Cisco IOS XR Quality of Service (QoS) feature for prioritizing traffic flow and providing preferential forwarding for higher-priority packets. The QoS techniques described include allocating bandwidth, improving loss characteristics, avoiding and managing network congestion, metering network traffic, and setting traffic-flow priorities across the network.

For QoS command descriptions, usage guidelines, and examples, refer to the Cisco IOS XR Modular Quality of Service Command Reference for the Cisco CRS-1 Router.

The preface contains the following sections:

Changes to This Document

Obtaining Documentation and Submitting a Service Request

Changes to This Document

The following table lists the technical changes made to this document.

Table 1 Changes to This Document

Release
Revision
Date
Change Summary

Cisco IOS XR 3.9

OL-20388-01

December, 2009

Initial release of this document.

Cisco IOS XR 3.9

OL-20388-02

March, 2010

In the "Configuring Modular Quality of Service Packet Classification on Cisco IOS XR Software" chapter:

Updated tables 1, 2, 3, and 4 that describe matching and marking operations to include additional support and indicate some operations as not being supported on ATM interfaces (CSCsv50430). Added bundle interface information to these tables.

Corrected the configuration steps for "Applying the Route Policy to BGP." Removed the route-policy command, added the address-family and table-policy commands.

In the "Configuring Modular QoS Congestion Avoidance on Cisco IOS XR Software" chapter:

Removed the restriction about configuring either the shape average, bandwidth, or bandwidth remaining percent commands in the user defined policy map class for the random-detect command to take effect (CSCsl69571).


Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.