Configuring Hierarchical Modular QoS on Cisco ASR 9000 Series Routers
Information About Hierarchical QoS
QC-126
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide
OL-23108-02
policy-map child
class c1
police rate 2 mbps
class c2
police rate 5 mbps
class class-default
police rate 10 mbps
SIP 700 for the ASR 9000
• In a three-level hierarchy, the bottom level does not allow queueing actions.
• On ingress, queueing actions are not allowed.
Sample Scenarios of Hierarchical Policies
Two-Level Hierarchical Policies
Two-level hierarchical policies, also called nested polices, can be illustrated with a parent-level policy
for the top level of the hierarchy and a child-level for the bottom level of the hierarchy. A two-level
hierarchical policy can have policing-only polices at the parent and child levels or can have queueing
and policing at the parent and child levels. Hierarchical policies are configured by attaching a policy
directly to a class of traffic.
Two-Level Hierarchical Policing Policy
Multi-level traffic policing is generally applied on ingress, and is a good application of two-level
policies, as shown in
Example 1. Aggregate traffic is policed to 10 Mbps and at the same time FTP traffic
is policed to 1 Mbps and HTTP traffic is policed to 3 Mbps. The policy child-police is attached to the
class-default of the policy parent-police.
Example 1 Two-Level Hierarchical Policing Policy
class-map ftp
match protocol ftp
class-map http
match protocol http
policy-map child-police
class ftp
police rate 1 mbps
class http
police rate 3mbps
class class-default
policy-map parent-police
class class-default
police rate percent 10 mbps
service-policy child-police
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