Cisco 10000 Series User Manual

13-5
Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 13 Defining QoS for Multiple Policy Levels
Components Common to All Types of Hierarchical Policies
• service-policy command—Applies a child policy to the parent policy to create a single hierarchical
QoS policy. Specify the name of the child policy map as the policy-map-name. Do not specify the
input or output keyword.
Note For more information about hierarchical policies, see the “Types of Hierarchical Policies” section on
page 13-6.
Table 13-1 summarizes the commands configured in the parent class-default class for the different types
of hierarchical policies.
The router reserves the bandwidth you specify in the parent policy shape or police command for the
exclusive use of the PVC or VLANs to which the policy is applicable. The router does not share unused
bandwidth with other PVCs or VLANs. However, the actual shape rate the router applies to the child
traffic classes might differ from the rate you specify in the parent policy. For example, the router might
map a specified shape rate of 10.5
Mbps to 11 Mbps. Use the show policy-map interface command to
determine the actual shape rate applied.
service-policy Command
For hierarchical policies, the service-policy command is used to attach:
• Child policies to child policies
• Child policies to parent policies
• Parent policies to interfaces, subinterfaces, and virtual circuits
When attaching child policies to child or parent policies, do not specify the output or input keyword
when you enter the service-policy command. For example, enter the following command:
Router(config-if)# service-policy policy-map-name
When attaching parent policies to interfaces, subinterfaces, or virtual circuits, enter the service-policy
command and specify the output or input keyword as described below:
• Nested hierarchical policies and three-level hierarchical policies—Specify the output keyword to
tell the router to apply the policy to outbound traffic. For more information, see the
“Nested
Hierarchical Policies” section on page 13-6 and the “Three-Level Hierarchical Policies” section on
page 13-8.
• Hierarchical input policing policies—Specify the input keyword to apply the policy to inbound
traffic. For more information, see the
“Hierarchical Input Policing Policies” section on page 13-10.
Note The router does not support nested and three-level hierarchical policies on inbound interfaces, and it
does not support hierarchical input policing on outbound interfaces.
Ta b l e 13-1 Hierarchical Parent Class-Default Class Commands
Type of Policy shape Command police Command service-policy Command
Nested Hierarchical Yes No Yes
Three-Level Hierarchical Yes No Yes
Hierarchical Input Policing No Yes Ye s

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English