Qos Models; Overview Of Qos Models - Cisco 10000 Series Configuration Manual

QoS Models

QoS Models
This section defines two QoS models with respect to Ether-DSL aggregation, supported on the Cisco
10000 series router. It includes the following topics:
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Overview of QoS Models

The E-DSL QoS models are defined based on whether its requirement is generic to all services or
specific to residential or business services.
Generic requirements are common to all subscriber lines regardless of whether they support residential
or business services. Generic requirements per subscriber line include the following:
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Business services additionally include the following requirements:
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Residential services additionally include the following requirements:
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The two DSLAM model configurations that are supported on Cisco 10000 series router for business and
residential services are:
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Note
Cisco 10000 Series Router Quality of Service Configuration Guide
1-6
Overview of QoS Models, page 1-6
Configuration Tasks, page 1-8
Configuration Examples, page 1-9
Avoid indiscriminate loss of traffic downstream at the DSLAM
Minimum assured rate per service or class
Maximum enforced rate per service or class
Ability for one service or class of a particular subscriber to re-use unused bandwidth from another
service or class for the same subscriber.
Single point of traffic injection
Enforce a sub modem train rate max (shaped) aggregate rate per subscriber line
Child queuing policy
Analogous to current Layer 3 VPN access QOS services
Support multiple points of traffic injection into the Layer 2 access network
Wholesale bandwidth concept –analogous to a virtual path in ATM-DSL
Per session services
Support VLAN aggregation
Model D.2 Definition, page 1-7
Model F Definition, page 1-7
QoS Models D.2 and F are supported on PRE3 and PRE4.
Chapter 1 Quality of Service Overview
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