Feature History For Hierarchical Policies; Benefits Of Hierarchical Policies; Components Common To All Types Of Hierarchical Policies - Cisco 10000 Series Configuration Manual

Chapter 13 Defining QoS for Multiple Policy Levels

Feature History for Hierarchical Policies

Cisco IOS Release
Release 12.0(22)S
Release 12.0(25)SX
Release 12.2(16)BX
Release 12.3(7)XI
Release 12.2(28)SB
Release 12.2(31)SB2

Benefits of Hierarchical Policies

Depending on the type of hierarchical QoS policy you configure, you can:
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Components Common to All Types of Hierarchical Policies

All types of hierarchical policies use the following components to provide multiple levels of QoS
behavior:
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OL-7433-09
Description
The hierarchical policies feature was introduced on the
PRE1 and support two-level, nested hierarchical policies.
This feature was enhanced on the PRE1 to support
three-level hierarchical policies.
This feature was introduced on the PRE2 and supported
two-level, nested hierarchical policies.
This feature was enhanced on the PRE2 to support
three-level hierarchical policies.
This feature was integrated into Cisco IOS
Release 12.2(28)SB for the PRE2 and enhanced to support
hierarchical input policing feature on the PRE2.
This feature was introduced on the PRE3
Shape multiple queues to a single rate
Divide a single class of traffic into one or more subclasses
Specify the maximum transmission rate of a set of traffic classes that are queued separately, which
is essential for virtual interfaces such as Frame Relay PVCs and IEEE 802.1Q virtual LANs
(VLANs)
Configure fair queues on virtual circuits
Shape the aggregate traffic of queues on a physical interface (for example, provide a 10-megabits
per second (Mbps) service on a 100-Mbps physical interface)
Restrict the maximum bandwidth of a VC while allowing policing and marking of classes within the
VC
Child Policy, page 13-4
Parent Policy, page 13-4
service-policy Command, page 13-5
Components Common to All Types of Hierarchical Policies
Cisco 10000 Series Router Quality of Service Configuration Guide
Required PRE
PRE1
PRE1
PRE2
PRE2
PRE2
PRE3
13-3