QoS Commands

User Guidelines

Policers that contain set or trust Policy-map Class Configuration commands or that have ACL classifications cannot be attached to an output interface.

Define an aggregate policer if the policer is shared with multiple classes.

Policers in one port cannot be shared with other policers in another device; traffic from two different ports can be aggregated for policing purposes.

An aggregate policer can be applied to multiple classes in the same policy map; An aggregate policer cannot be applied across multiple policy maps.

This policer can also be used in Cascade police to make a cascade policer.

An aggregate policer cannot be deleted if it is being used in a policy map. The no police aggregate Policy-map Class Configuration command must first be used to delete the aggregate policer from all policy maps.

Policing uses a token bucket algorithm. CIR represents the speed with which the token is removed from the bucket. CBS represents the depth of the bucket.

Example

The following example defines the parameters of a policer called policer1 that can be applied to multiple classes in the same policy map. When the average traffic rate exceeds 124,000 bps or the normal burst size exceeds 96000 bps, the packet is dropped..

Console (config)# qos aggregate-policerpolicer1 124000 96000

exceed-action drop

show qos aggregate-policer

The show qos aggregate-policerUser EXEC mode command displays the aggregate policer parameter.

Syntax

show qos aggregate-policer [aggregate-policer-name]

Parameters

aggregate-policer-name— Specifies the name of the aggregate policer to be displayed.

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