Preface

From Release 6.1.2 onwards, Cisco introduces support for the 64-bit Linux-based IOS XR operating system. Extensive feature parity is maintained between the 32-bit and 64-bit environments. Unless explicitly marked otherwise, the contents of this document are applicable for both the environments. For more details on Cisco IOS XR 64 bit, refer to the Release Notes for Cisco ASR 9000 Series Routers, Release 6.1.2 document.

This reference describes the Cisco IOS XR Quality of Service commands. The preface for Modular Quality of Service Command Reference for Cisco ASR 9000 Series Routers contains these sections:

Changes to This Document

This table lists the technical changes made to this document since it was first published.

Table 1. Changes to this Document
Change Summary

May 2015

Initial release of the cumulative command reference document that covers all updates from Release 4.3.0 onwards.

September 2015

Republished with documentation updates for Cisco IOS XR Release 5.3.2 features.

April 2016

Republished with documentation updates for Cisco IOS XR Release 6.0.1 features.

November 2016

Republished with documentation updates for Cisco IOS XR Release 6.1.2 features.

March 2018

Republished for Release 6.3.2.

July 2018

Republished for Release 6.5.1.

April 2019

Republished for Release 6.6.2

January 2020

Republished with documentation updates for Release 7.1.1 features.

July 2021

Republished for Release 7.4.1.

November 2021

Republished with documentation updates for Release 7.5.1 features.

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