Configuring Hierarchical Modular QoS on Cisco ASR 9000 Series Routers
Information About Hierarchical QoS
QC-127
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide
OL-23108-02
Two-Level Hierarchical Queueing Policy
A hierarchical Queueing Policy is generally applied on egress, and can be configured by modifying the
hierarchical policing policy in
Example 1.
In Example 2, the class-default of parent-policy is shaped to10 Mbps. Policy child-queueing-policy is
attached to the class-default of parent-policy, and defines three traffic classes:
• voice-ip matches the real-time protocol RTP and is configured as a priority class with 2 Mbps
policing
• ftp is configured with 1 Mbps of guaranteed bandwidth
• http is configured with 3 Mbps of guaranteed bandwidth
Example 2 Two-Level Hierarchical Queueing Policy
class-map voice-ip
match protocol rtp
class-map ftp
match protocol ftp
class-map http
match protocol http
policy-map child-queueing-policy
class voice-ip
priority level 1
police rate 2 mbps
class ftp
bandwidth 1 mbps
class http
bandwidth 3 mbps
class class-default
policy-map parent-policy
class class-default
shape average 10 mbps
service-policy child-queuing-policy
Three-Level Hierarchical Policies
Example 3 shows a three-level hierarchical policy in a Frame Relay environment in which the goal is to
shape a Frame Relay PVC to a maximum rate (effectively creating an interface with a specific
bandwidth) and then manage the bandwidth of the PVC.
Note This example is valid only on the SIP 700 for the ASR 9000.
Example 3 Three-Level Hierarchical Queueing Policy: Frame Relay
policy-map frpvc-policy
class class-default
shape average 2 mbps
service-policy bandwidth-mgmt
policy-map bandwidth-mgmt
class voice
priority level 1
police rate percent 20
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