Reference Guide

Congure control-plane policing
Rate-limiting the protocol CPU queues requires conguring control-plane type QoS policies.
• Create QoS policies (class maps and policy maps) for the desired CPU-bound queue.
• Associate the QoS policy with a particular rate-limit.
• Assign the QoS service policy to control plane queues.
By default, the peak information rate (pir) and committed information rate (cir) values are in packets per second (pps) for control plane.
CoPP for CPU queues converts the input rate from kilobits per second (kbps) to packets per second (pps), assuming 64 bytes is the
average packet size, and applies that rate to the corresponding queue – 1 kbps is roughly equivalent to 2 pps.
1 Create a class-map of type control-plane and congure a name for the class-map in CONFIGURATION mode.
class-map type control-plane class-map-name
2 Return to CONFIGURATION mode.
exit
3 Create an input policy-map to assign the QoS policy to the desired service queues in CONFIGURATION mode.
policy-map type control-plane policy-map-name
4 Associate a policy-map with a class-map in POLICY-MAP mode.
class class-name
5 Congure marking for a specic queue number in POLICY-MAP-CLASS-MAP mode (0 to 11).
set qos-group queue-number
6 Congure rate policing on incoming trac in POLICY-MAP-CLASS-MAP mode.
police {cir committed-rate | pir peak-rate}
• cir committed-rate—Enter a committed rate value in pps (0 to 4000000).
• pir peak rate — Enter a peak-rate value in pps (0 to 40000000).
Create QoS policy for CoPP
OS10(config)# class-map type control-plane copp
OS10(conf-cmap-control-plane)# exit
OS10(config)# policy-map type control-plane copp1
OS10(conf-pmap-control-plane)# class copp
OS10(conf-pmap-c)# set qos-group 2
OS10(conf-pmap-c)# police cir 100 pir 100
View policy-map
OS10(conf-pmap-c)# do show policy-map
Service-policy(control-plane) input: copp1
Class-map (control-plane): copp
set qos-group 2
police cir 100 bc 100 pir 100 be 100
Assign service-policy
Rate controlling control trac towards CPU requires conguring control-plane type policy. To enable CoPP, you need to apply the dened
policy-map to CONTROL-PLANE mode.
1 Enter CONTROL-PLANE mode from CONFIGURATION mode.
control-plane
2 Dene a service-policy of type input and congure a name for the service policy in CONTROL-PLANE mode.
service-policy input service-policy-name
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Quality of service