Users Guide

Table 119. CoPP: Protocol mappings to queues, and default rate limits and buffer sizes - from release
10.4.2 and later (continued)
Queue Protocols Minimum rate
limit (in pps)
Maximum rate
limit (in pps)
Minimum
guaranteed
buffer (in
bytes)
Static shared
limit (in bytes)
21 ACL logging 100 100 1664 20800
22 MCAST known data 100 100 1664 20800
23 PTP 300 6400 TBD TBD
24 Port Security 100 100 TBD TBD
For information about the current protocol to queue mapping and the rate-limit configured per queue, see show control-plane
info.
Configure control-plane policing
Rate-limiting the protocol CPU queues requires configuring 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 – One kbps is roughly equivalent
to two pps.
1. Create a control-plane type class-map and configure a name for the class-map in CONFIGURATION mode.
class-map type control-plane example-copp-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 example-copp-policy-map-name
4. Associate a policy-map with a class-map in POLICY-MAP mode.
class example-copp-class-map-name
5. Configure marking for a specific queue number in POLICY-MAP-CLASS-MAP mode. Use the show control-plane
info command to view the list of control-plane queues.
set qos-group queue-number
6. Configure rate policing on incoming traffic in POLICY-MAP-CLASS-MAP mode.
police {cir committed-rate | pir peak-rate}
● cir committed-rate—Enter a committed rate value in pps, from 0 to 4000000.
● pir peak rate — Enter a peak-rate value in pps, from 0 to 40000000.
Create QoS policy for CoPP
OS10(config)# class-map type control-plane example-copp-class-map-name
OS10(config-cmap-control-plane)# exit
OS10(config)# policy-map type control-plane example-copp-policy-map-name
OS10(config-pmap-control-plane)# class example-copp-class-map-name
1544
Quality of service