Users Guide

The basics for creating a CoPP service policy is to create QoS policies for the desired CPU bound queue and associate it with a
particular rate-limit. The QoS policies are assigned to a control-plane service policy for each port-pipe.
1. Create a QoS input policy for the router and assign the policing.
CONFIGURATION mode
qos-policy-input name cpu-qos
2. Create an input policy-map to assign the QoS policy to the desired service queues.l.
CONFIGURATION mode
policy-map--input name cpu-qos service-queue queue-number qos-policy name
On the Z9500, the range of queue-number values is from 0 to 23. The twenty-four control–plane queues are divided into
groups of eight queues for the Route Processor, Control Processor, and line-card CPUs as follows:
• Queues 0 to 7 process packets destined to the Control Processor CPU .
• Queues 8 to 15 process packets destined to the Route Processor CPU.
• Queues 16 to 23 process packets destined to the line-card CPU.
3. Enter Control Plane mode.
CONFIGURATION mode
control-plane-cpuqos
4. Assign a CPU queue-based service policy on the control plane in cpu-qos mode. Enabling this command sets the queue rates
according to those congured.
CONTROL-PLANE mode
service-policy rate-limit-cpu-queues input-policy-map
Examples of Conguring CoPP for CPU Queues
The following example shows creating the QoS policy.
Dell#conf
Dell(conf)#qos-policy-input cpuq_1
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
Dell(conf-qos-policy-in)#rate-police 5000 80 peak 600 50
Dell(conf-qos-policy-in)#exit
The following example shows assigning the QoS policy to the queues.
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
The following example shows creating the control plane service policy.
Dell#conf
Dell(conf)#control-plane
Dell(conf-control-plane)#service-policy rate-limit-cpu-queues cpuq_rate_policy
CoPP for OSPFv3 Packets
You can create an IPv6 ACL for control-plane trac policing for OSPFv3, in addition to the CoPP support for VRRP, BGP, and ICMP.
You can use the ipv6 access-list name cpu-qos permit ospfv3 command to allow CoPP trac for OSPFv3. Control
Plane Policing (CoPP) enables more number of CPU queues to be made available on ports for IPv6 and ICMPv6 packets.
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Control Plane Policing (CoPP)