Configuring Hierarchical Modular QoS on Cisco ASR 9000 Series Routers
Verifying the Configuration of Hierarchical Policies
QC-151
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide
OL-23108-02
When used in the parent policer, the child-conform-aware command prevents the parent policer from
dropping any ingress traffic that conforms to the committed rate specified in the child policer.
In this example, class EF in the child policy is configured with a committed rate of 1 Mbps, a conform
action and an exceed action. The traffic that is below 1 Mbps is presented to the parent policer with the
MPLS EXP bit set to 4, and traffic that exceeds 1 Mbps is dropped.
Class AF1 in the child policy is configured with a committed rate of 1 Mbps, a conform action and an
exceed action. The traffic that is below 1 Mbps is presented to the parent policer with the MPLS EXP
bit set to 3, and traffic that exceeds 1 Mbps is presented to the parent policer with the MPLS EXP bit set
to 2.
With this child policy configuration, the parent policer sees traffic from the child classes as exceeding
its committed rate of 2 Mbps. Without the child-conform-aware command in the parent policer, the
parent polices to 2 Mbps, which can result into dropping some conformed traffic from class EF in the
child policy. When the child-conform-aware command is configured in the parent policer, the parent
policer does not drop any traffic that conforms under the child policy.
policy-map parent
class class-default
service-policy child
police rate 2 mbps
child-conform-aware
conform-action transmit
exceed-action drop
policy-map child
class EF
police rate 1 mbps
conform-action set mpls experimental imposition 4
exceed-action drop
class AF1
police rate 1 mbps
conform-action set mpls experimental imposition 3
exceed-action set mpls experimental imposition 2
Verifying the Configuration of Hierarchical Policies
To verify hierarchical policies, enter any of the following commands in privileged EXEC mode:
Command Purpose
show policy-map interface Displays policy configuration information for all
classes configured for all service policies on the
specified interface.
show qos interface Displays QoS information for all classes in the
service policy that is attached to the specified
interface.
show running-config class-map Displays the configuration of all class maps
configured on the router.
show running-config policy-map Displays the configuration of all policy maps
configured on the router.
show running-config policy-map
policy-map-name
Displays the configuration of all classes contained
in the policy map you specify.
To Next Page
Loading...
Need help?
General
