Dell S4048T, Configuration Manual

Page: 285 / 1277

The following example shows creating the QoS input policy.
Dell(conf)#qos-policy-in rate_limit_200k cpu-qos
Dell(conf-in-qos-policy-cpuqos)#rate-police 200 40 peak 500 40
Dell(conf-in-qos-policy-cpuqos)#exit
Dell(conf)#qos-policy-in rate_limit_400k cpu-qos
Dell(conf-in-qos-policy-cpuqos)#rate-police 400 50 peak 600 50
Dell(conf-in-qos-policy-cpuqos)#exit
Dell(conf)#qos-policy-in rate_limit_500k cpu-qos
Dell(conf-in-qos-policy-cpuqos)#rate-police 500 50 peak 1000 50
Dell(conf-in-qos-policy-cpuqos)#exit
The following example shows creating the QoS class map.
Dell(conf)#class-map match-any class_ospf cpu-qos
Dell(conf-class-map-cpuqos)#match ip access-group ospf
Dell(conf-class-map-cpuqos)#exit
Dell(conf)#class-map match-any class_bgp cpu-qos
Dell(conf-class-map-cpuqos)#match ip access-group bgp
Dell(conf-class-map-cpuqos)#exit
Dell(conf)#class-map match-any class_lacp cpu-qos
Dell(conf-class-map-cpuqos)#match mac access-group lacp
Dell(conf-class-map-cpuqos)#exit
Dell(conf)#class-map match-any class-ipv6-icmp cpu-qos
Dell(conf-class-map-cpuqos)#match ipv6 access-group ipv6-icmp
Dell(conf-class-map-cpuqos)#exit
The following example shows matching the QoS class map to the QoS policy.
Dell(conf)#policy-map-input egressFP_rate_policy cpu-qos
Dell(conf-policy-map-in-cpuqos)#class-map class_ospf qos-policy rate_limit_500k
Dell(conf-policy-map-in-cpuqos)#class-map class_bgp qos-policy rate_limit_400k
Dell(conf-policy-map-in-cpuqos)#class-map class_lacp qos-policy rate_limit_200k
Dell(conf-policy-map-in-cpuqos)#class-map class-ipv6 qos-policy rate_limit_200k
Dell(conf-policy-map-in-cpuqos)#exit
The following example shows creating the control plane service policy.
Dell(conf)#control-plane-cpuqos
Dell(conf-control-cpuqos)#service-policy rate-limit-protocols egressFP_rate_policy
Dell(conf-control-cpuqos)#exit
Configuring CoPP for CPU Queues
Controlling traffic on the CPU queues does not require ACL rules, but does require QoS policies.
CoPP for CPU queues converts the input rate from kbps to pps, assuming 64 bytes is the average packet size,
and applies that rate to the corresponding queue. Consequently, 1 kbps is roughly equivalent to 2 pps.
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.
Control Plane Policing (CoPP) 285