Cisco ASR 9000 Series Service Configuration Guide

Modular QoS Overview on Cisco ASR 9000 Series Routers
Where to Go Next
QC-5
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide
OL-23108-02
ANCP allows static mapping between AN ports and VLAN subinterfaces so that DSL rate updates for a
specific subscriber received by the ANCP server are applied to the QoS configuration corresponding to
that subscriber. DSL train rates received via ANCP are used to alter shaping rates on subscriber-facing
interfaces and subinterfaces on the router.
Additional Cisco IOS XR QoS Supported Features
The following sections describe the additional features that play an important role in the implementation
of QoS on Cisco
IOS XR software.
Modular QoS Command-Line Interface
In Cisco IOS XR software, QoS features are enabled through the Modular QoS command-line interface
(MQC) feature. The MQC is a command-line interface (CLI) structure that allows you to create policies
and attach these policies to interfaces. A traffic policy contains a traffic class and one or more QoS
features. A traffic class is used to classify traffic, whereas the QoS features in the traffic policy determine
how to treat the classified traffic. One of the main goals of MQC is to provide a platform-independent
interface for configuring QoS across Cisco platforms.
For detailed conceptual and configuration information about the MQC feature, see the “Configuring
Modular Quality of Service Packet Classification on Cisco ASR 9000 Series Routers” module in this
guide.
Fabric QoS
There is no separate configuration for fabric QoS. The fabric priority is derived from the priority action
in the ingress service policy.
Where to Go Next
To configure the packet classification features that involve identification and marking of traffic flows,
see the “Configuring Modular Quality of Service Packet Classification on
Cisco
ASR 9000 Series Routers” module in this guide.
To configure the queueing, scheduling, policing, and shaping features, see the “Configuring Modular
Quality of Service Congestion Management on Cisco
ASR 9000 Series Routers” module in this guide.
To configure the WRED and RED features, see the “Configuring Modular QoS Congestion Avoidance
on Cisco
ASR 9000 Series Routers module in this guide.
To configure Access Node Control Protocol (ANCP) features, see the “Configuring Access Node
Control Protocol on Cisco
ASR 9000 Series Routers” module in this guide.

Cisco ASR 9000 Series Specifications

General

Brand	Cisco
Model	ASR 9000 Series
Category	Network Router
Language	English