Configuring Policing; Finding Feature Information; Information About Policing - Cisco Nexus 7000 Series Configuration Manual

Configuring Policing

This chapter describes how to configure policing of traffic classes on the Cisco NX-OS device.
•
•
•
•
•
•
•
•
•
•

Finding Feature Information

Your software release might not support all the features documented in this module. For the latest caveats
and feature information, see the Bug Search Tool at
for your software release. To find information about the features documented in this module, and to see a list
of the releases in which each feature is supported, see the "New and Changed Information"chapter or the
Feature History table in this chapter.

Information About Policing

Policing is the monitoring of the data rates for a particular class of traffic. When the data rate exceeds
user-configured values, marking or dropping of packets occurs immediately. Policing does not buffer the
traffic; therefore, the transmission delay is not affected. When traffic exceeds the data rate, you instruct the
system to either drop the packets or mark QoS fields in them.
You can define single-rate, dual-rate, and color-aware policers.
Single-rate policers monitor the committed information rate (CIR) of traffic. Dual-rate policers monitor both
CIR and peak information rate (PIR) of traffic. In addition, the system monitors associated burst sizes. Three
colors, or conditions, are determined by the policer for each packet depending on the data rate parameters
supplied: conform (green), exceed (yellow), or violate (red).
Finding Feature Information, on page 65
Information About Policing, on page 65
Shared Policers, on page 66
Licensing Requirements, on page 66
Prerequisites for Policing, on page 66
Guidelines and Limitations, on page 67
Configuring Policing, on page 68
Verifying the Policing Configuration, on page 78
Configuration Examples for Policing, on page 79
Feature History for Policing, on page 80
C H A P T E R
https://tools.cisco.com/bugsearch/
Cisco Nexus 7000 Series NX-OS Quality of Service Configuration Guide
7
and the release notes
65