Cisco IOS XR Modular Quality of Service Configuration Guide for the Cisco CRS Router
Preface
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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 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 in Cisco IOS XR Release 4.0

Revision
Date
Change Summary

OL-23233-01

September, 2010

Added the "Modular QoS Deployment Scenarios" and "Configuring QoS on Link Bundles" modules.

In the "Configuring Modular Quality of Service Packet Classification and Marking" module:

Moved the Multicast VPN feature and the VPLS QoS feature to the "Modular QoS Deployment Scenarios" module.

In the "Modular QoS Deployment Scenarios" module, added these features:

Hierarchical VPLS QoS

QinQ QoS

QoS on Multicast VPN

QoS with SRP

VPLS QoS

Moved QoS sections from the Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Configuration Guide to this guide:

QoS on Link Bundles

QoS with SRP

OL-23233-02

November, 2010

Made corrections for CSC eg5763 in the "Configuring Modular Quality of Service Packet Classification and Marking" module:

Indicated that the exponential weight factor is not configurable.

Because they are not supported, removed ATM-specific sections. In the Configuring Modular Quality of Service Packet Classification and Marking" module:

Hierarchical Policing for ATM on Layer 2 VPN (removed)

ATM CLP bit (added)

In the Configuring Modular Quality of Service Congestion Management" module, removed:

QoS-Group-Based Queueing

Traffic Policing on Layer 2 ATM Interfaces

Attaching a Service Policy to the Attachment Circuits (AC) example

Configuring Dual Queue Limit example

OL-23233-03

December, 2010

In the "Modular QoS Overview" module, added information on the interfaces supported on the Cisco CRS Series Modular Services Card 40G (CRS-MSC-40G).

In the "Configuring Modular Quality of Service Packet Classification and Marking" module, revised the hierarchical ingress policing example.

In the "Configuring Modular QoS Congestion Management" module, added:

Policer Granularity and Shaper Granularity features.

Priority Queueing on the CRS-MSC-140G section.

Ingress and Egress Queueing on the CRS-MSC-140G section.

Egress Minimum Bandwidth on the CRS-MSC-140G section.

Layer-All Accounting section.

Policing on the CRS-MSC-140G section.

In the "Modular QoS on Link Bundles" module, corrected the information in the QoS and Link Bundling section.

OL-23233-04

January, 2010

Added information for Layer 3 ATM subinterfaces, which were supported in Cisco IOS XR Release 3.9.2.

OL-23233-05

May, 2011

Information regarding match criteria for inner VLAN was added to this document.


Obtaining Documentation and Submitting a Service Request

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

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