Administrator Guide

• Queues 0 to 6 process packets destined to the Control Processor CPU.
• Queues 7 to 13 process packets destined to the Route Processor CPU.
• Queues 14 to 20 process packets destined to the line-card CPU.
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
Q3 2000 5000
Q4 300 2000
Q5 300 2000
Q6 1200 3000
Q7 800 1000
Q8 600 1000
Q9 600 1000
Q10 3200 1000
224
Control Plane Policing (CoPP)