Users Guide

For information about the default rate limits applied to the seven CPU queues for the Route Processor,
Control Processor, and line cards, refer to CoPP Implementation.
3 Enter Control Plane configuration mode.
CONFIGURATION mode
control-plane-cpuqos
4 Apply the QoS input policy-map with queue-based rate limiting on control plane traffic.
CONTROL-PLANE mode
service-policy rate-limit-cpu-queues input-policy-map
Examples of Configuring CoPP for CPU Queues
Example of Creating a QoS Policy to Configure the Rate Limit
Dell#conf
Dell(conf)#qos-policy-input cpuq_1 cpu-qos
Dell(conf-qos-policy-in)#rate-police 3000 40 peak 500 40
Dell(conf-qos-policy-in)#exit
Dell(conf)#qos-policy-input cpuq_2 cpu-qos
Dell(conf-qos-policy-in)#rate-police 5000 80 peak 600 50
Dell(conf-qos-policy-in)#exit
Example of Assigning a QoS Policy to a CPU Queue
Dell(conf)#policy-map-input cpuq_rate_policy cpu-qos
Dell(conf-qos-policy-in)#service-queue 5 qos-policy cpuq_1
Dell(conf-qos-policy-in)#service-queue 6 qos-policy cpuq_2
Dell(conf-qos-policy-in)#service-queue 7 qos-policy cpuq_1
Example of Applying a Queue-Based Rate Limit to Control Plane Traffic
Dell#conf
Dell(conf)#control-plane-cpuqos
Dell(conf-control-plane)#service-policy rate-limit-cpu-queues cpuq_rate_policy
Displaying CoPP Configuration
The CLI provides show commands to display the protocol traffic assigned to each control-plane queue and
the current rate-limit applied to each queue. Other show commands display statistical information for trouble
shooting CoPP operation.
Viewing Queue Rates
To view the rates that are currently applied on each control-plane queue, use the show cpu-queue rate
[all | queue-id id | range from-queue to-queue] command.
Dell#show cpu-queue rate all
Service-Queue Rate (kbps) Burst (kb)
-------------- ----------- ----------
Q0 400 1000
Q1 600 1000
Q2 600 1000
Control Plane Policing (CoPP) 276